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Under short messaging service (SMS) spam is understood the unsolicited or undesired messages received on mobile phones. These SMS spams constitute a veritable nuisance to the mobile subscribers. This marketing practice also worries service providers in view of the fact that it upsets their clients or even causes them lose subscribers. By way of mitigating this practice, researchers have proposed several solutions for the detection and filtering of SMS spams. In this paper, we present a review of the currently available methods, challenges, and future research directions on spam detection techniques, filtering, and mitigation of mobile SMS spams. The existing research literature is critically reviewed and analyzed. The most popular techniques for SMS spam detection, filtering, and mitigation are compared, including the used data sets, their findings, and limitations, and the future research directions are discussed. This review is designed to assist expert researchers to identify open areas that need further improvement.

The importance and utilization of mobile communication are increasing day by day, and the short message service SMS is one of them. Although SMS is a widely used communication way, it brings together a major problem, which is SMS spam messages. SMS spams do not only use vain in the mobile communication traffic but also disturb users. Based on this fact, blacklisting methods, statistical methods which are built on the frequency of occurrence of words or characters, and machine learning methods have been employed. Because punishments and legal laws are not enough to solve this problem and the Group Special Mobile number of SMS spam can easily be changed, a content-based approach must be proposed. Content-based methods showed high success in spam e-mail filtering, but it is hard in the SMS spam filtering because SMS messages are extremely short and generally contains many abbreviations. In this study, an image processing method, local ternary pattern was improved to extract features from SMS messages in the feature extraction stage. In the proposed one-dimensional ternary patterns, firstly, text message was converted to their UTF-8 values. Later, each character its UTF-8 value in the message was compared with its neighbors. Two different feature sets were extracted from the results of these comparisons. Finally, some machine learning methods were employed to classify these features. In order to validate the proposed approach, three different SMS corpora were used. The achieved accuracies and other employee performance measures showed that the proposed approach, one-dimensional ternary patterns, can be effectively employed in SMS spam filtering. Copyright © 2016 John Wiley & Sons, Ltd.

Security is a very important aspect in data communication. In the last decade, there was a rapid development in mobile phone technology. Smartphone have been equipped with various features and one of them is the short message service (SMS). However, messages sent via mobile phone networks pose threat to be accessed by people who do not have any authorization. Therefore, it is necessary to do research on the development of software to enhance the security of messages through message encryption and decryption features. This application uses Java programming language with SDK (Software Development Kit) Android and Android Studio 1.3.1 as an editor. The initial step of this research is to encrypt the original message to produce the ciphertext message. The second step is to decrypt ciphertext incoming messages to become genuine message. Results from this research are an Android-based application that can perform encryption and decryption of the SMS messages using the RC6 algorithm. With the application of cryptography for SMS messages, the expected level of information security of the message can be improved so that the message will be more secure from unauthorized access.

SMS spam detection is an important task where spam SMS messages are identified and filtered. As greater numbers of SMS messages are communicated every day, it is very difficult for a user to remember and correlate the newer SMS messages received in context to previously received SMS. SMS threads provide a solution to this problem. In this work the problem of SMS spam detection and thread identification is discussed and a state of the art clustering-based algorithm is presented. The work is planned in two stages. In the first stage the binary classification technique is applied to categorize SMS messages into two categories namely, spam and non-spam SMS; then, in the second stage, SMS clusters are created for non-spam SMS messages using non-negative matrix factorization and K-means clustering techniques. A threading-based similarity feature, that is, time between consecutive communications, is described for the identification of SMS threads, and the impact of the time threshold in thread identification is also analysed experimentally. Performance parameters like accuracy, precision, recall and F-measure are also evaluated. The SMS threads identified in this proposed work can be used in applications like SMS thread summarization, SMS folder classification and other SMS management-related tasks.

In today's fast world, mobile phones become very import for every human being. But almost everyone might have experienced with misplacing or losing of their mobile phones. So, the security of mobile phones are becomes more challenging one. To detect and monitoring of thefted or misplaced mobile phones, this paper develops an unique and efficient android application. The features of this technique are quite different from the existing tracker applications which would be helpful in tracing the lost mobile phones without the help of any protecting agency. The tracking application has the capability of SIM card detection, call monitoring, image capturing etc based on some predefined SMS. The application installed will be running in the background and won’t be shown in the task manager as well. Once the mobile phone is lost, this application enables the user to track a mobile device and to receive notification via SMS to a predefined number. Some specified formatted messages can be used to control the thefted mobile phone.

Although many ways to communicate with someone, SMS is still one of the popular media to send a message to someone. Not unlike the others, the messages sent can be known by the third party either tapping or the investigation. Unencrypted SMS can be easily obtained from communication providers so that they may be misused. Since the communication devices have been using Android operating system, they are programmable. There is various script can be inserted to devices to protect the data. One of them is Vernam Cipher. This method offers how to protect personal messages sent via SMS easily. It converts the message into an encrypted message shortly before sent. At the moment there tapping on the outside, the information is not easily understood its contents. The message is entirely secure.

This study introduces a direct and intuitive method to resist certain apps from sending SMS message stealthily. According to the heuristic analysis and observation, it is apparently that a SMS message, which has the textual content originated from user's entering manually, is obviously benign. We use this principle to design a serious of SMS examination and verification procedures, in order to force all SMS messages to be verified automatically before delivering them actually. A package named as Taurus, which is comprised of several new components, are developed in the Android framework in this study. The evaluation shows that Taurus, which examines all outgoing and detects potentially malicious SMS messages, has an excellent performance with reasonable memory usage overhead.

Almost every business uses SMS for various reasons to increase sales and brand exposure and Mass alert to everyone. 80% of cell phone users carry their phone all the time. Sending a text message to their cell phones is the perfect way to alert them of any urgent information, such as a change of appointment, or product ready for pickup etc. Mass alert are an ideal way for school districts to send alerts to parents regarding school closings, changes in schedules etc. The short message service (SMS) is one of the highly used and well-tried mobile services with global availability within all GSM/CDMA networks. The existing SMS is limited to the transmission of secure plain text between different mobile phone subscribers and server for different purpose. SMS does not have any built-in procedure to authenticate the text and offer security for the text transmitted as data [5], because most of the applications for mobile devices are designed and developed without taking security into consideration [6] [7], But we can use SMS service to protect our financial transaction by enable or disable the account apply some security on SMS. It will help to control fraud on financial traction by ATM or online fund transfer. In this paper detail an overview of SMS transmission and how to apply security on SMS to transfer from one point to another point.

For mobile phone users, short message service (SMS) is the most commonly used text-based communication type on mobile devices. Users can interact with other users and services via SMS. For example, users can send private messages, use information services, apply for a job advertisement, conduct bank transactions, and so on. Users should be very careful when using SMS. During the sending of SMS, the message content should be aware that it can be captured and act accordingly. Based on these findings, the elderly, called as “Silent Generation” which represents 70 years or older adults, are text messaging much more than they did in the past. Therefore, they need solutions which are both simple and secure enough if there is a need to send sensitive information via SMS. In this study, we propose and develop an android application to secure text messages. The application has a simple and easy-to-use graphical user interface but provides significant security.

SMS (Short Message Service) is a facility for sending and receiving a short message of text by using a cell phone. SMS is a medium of communication that is easy to use and relatively cheap for SMS costs. Messages sent via SMS does not guarantee the security and confidential because messages that are sent using the default SMS application for your mobile phone is still an open text that has not been protected. Therefore, it takes a method and applications to secure the confidentiality of the information in an SMS message.This research aims to develop short message encryption applications on android smartphones using Vigenere algorithm utilizing euler's number as a safety and maintaining the confidentiality of this SMS only to a functioning android smartphone users to send messages and message encryption as well as receive incoming messages and decrypt the message. Starting from the early stages of identifying, needs analysis, design, implementation and testing.Application of message encryption using vigenere algorithm utilizing euler's number digit can help users of android smartphone to secure the contents of the message are confidential. Keywords: Short Message Service, the number of euler, vigenere algorithm

Nowadays, short message service (SMS) is being used in many daily life applications, including healthcare monitoring, mobile banking, mobile commerce, and so on. But when we send an SMS from one mobile phone to another, the information contained in the SMS transmit as plain text. Sometimes this information may be confidential like account numbers, passwords, license numbers, and so on, and it is a major drawback to send such information through SMS while the traditional SMS service does not provide encryption to the information before its transmission. In this paper, we propose an efficient and secure protocol called EasySMS, which provides end-to-end secure communication through SMS between end users. The working of the protocol is presented by considering two different scenarios. The analysis of the proposed protocol shows that this protocol is able to prevent various attacks, including SMS disclosure, over the air modification, replay attack, man-in-the-middle attack, and impersonation attack. The EasySMS protocol generates minimum communication and computation overheads as compared with existing SMSSec and PK-SIM protocols. On an average, the EasySMS protocol reduces 51% and 31% of the bandwidth consumption and reduces 62% and 45% of message exchanged during the authentication process in comparison to SMSSec and PK-SIM protocols respectively. Authors claim that EasySMS is the first protocol completely based on the symmetric key cryptography and retain original architecture of cellular network.

Mobile phone users have been using the SMS to send and receive text messages between them. Recently, GSMA(GSM Association) proposed the next generation instant messaging service, RCS-e(Rich Communication Service-enhanced). This was unavoidable because new OTT(Over The Top) services have emerged that threat the SMS after smart phones became popular. However, the RCS-e has limitations that it cannot inter-operate with the SMS which is still widely used. This paper propose a software framework that inter-work SMS with RCS-e. Call flows for canceling wireless contracts and sending SMS messages to RCS-e users were defined. Also, methods for protocol conversion were defined to inter-work two services. The performance evaluation showed that the proposed framework does not increase loads on IMS(IP Multimedia Subsystem) infrastructure.

In this paper we propose threshold public key cryptosystem for securing SMS between mobiles using a new method of Encryption and Decryption process of asymmetric cryptography. The mobile plays an important role in the online transactions; today 89% of mobiles communicating with the corporate data and carry the sensitive data like passwords, Bank pin numbers are also stored in the mobile devices, must be secured. The encryption plays an important role in the information security. The most important aspect needed to be considered while using cryptography to SMS security is the data storage and processing capabilities of the mobile phone. So in this paper we propose new technique HP-RSA (High Performance RSA) mainly helps in reducing the decryption process time, avoids the attacks at mobile devices (insecure data storage) and also reduces network traffic when we send SMS between devices. Considering all aspects in this paper proposed HPRSA provides higher authentication and security to the messages shared, which can be efficiently used in small devices like mobile phones.

The last few years has seen a massive growth of applications for smart phone operating systems such as Android, IOS. Short message services (SMS) is one of them. Although SMS as an application has existed for a long time, the method for managing short messages is rather outdated and very inconvenient. The is partially because most of the SMS applications are inherited from old fashioned mobile platforms, in which users of mobile phone usually concentrate on basic phone service and demand less for SMS. With the introduction of smart phone operating system, the old-fashioned method of short messages management is not suitable. To cope with this problem, in this paper we first conduct research on modern ways of short messages management, and then a short message services management system for mobile devices is designed. In this new system, more advanced options, such as messages query by date, by sender and sending a message to many receivers at the same time, for short messages is provided. Moreover, to validate our research and design, we implement the system based on Android platform. And we conduct some experiments with this system and test results shows that our system works quite well. With the mobile Internet becoming increasingly important to life, our research is expected to improve work efficiency greatly.

messages are one of the popular ways of communication. Sending an SMS/MMS is cheap, fast and simple. Because of mobile networks attack or smartphones hackers, the GSM networks are not secure, so that all information or SMS/MMS messages are vulnerable. This paper describe an android application that helps the user to encrypt the message (SMS/Multimedia files) before it is transmitted over the mobile network. The new idea of the program is to transmit encrypted messages and multimedia files via mobile networks or the internet as an alternative mean. To maintain intensive security, the program uses a Hybrid encryption algorithm based on Blowfish and S-Boxes of DES encryption. Moreover, it uses a private key encrypts the files and another private key encrypts file name. The transferring media is maintained online in the absence of mobile network coverage.

In this study, an application has been developed in the Eclipse environment for android that is used to locate the stolen mobile devices with turned on status. If an user send a Short Message Service (SMS) to our device from another phone as soon as we notice that our device is stolen, the designed application, which the name of "Secand" was given by us, will detect the password within this SMS and understand that our phone is stolen. Our application must be continuously running in the background in order to detect this incoming SMS. After our application detects the password within SMS, it will retrieve Global Positioning System (GPS) coordinates of our device and send these coordinates to us via SMS. Secand must have all GPS and SMS related authorizations for all of these operations. If it is assumed that the thief is on the move after the first GPS coordinates are sent, our application must send the coordinates of device in certain frequencies. This range of time can be set by the user. Such details can be activated optionally by the user after Secand application is installed to the device.

The short message service (SMS) has been put into the application well in many professional areas, and how to apply it in the instruction management is a subject allowing the personnel working at educational technology area to solve. This paper analyzes the constitution of short messages and describes the design of the short message service platform on the campus network based on the B/S structure, and presents the method of how to carry out the short message service platform based on the WEB in which we can integrate the information releasing and order function to play the information.

This project will focus on developing an enhancement of the vehicle alarm security system via SMS. The system will manipulate a mobile phone to send SMS (Short Message Service). Even though the SMS can be sent using the features available in the mobile, the objective of this project is to activate the SMS sending by the mobile phone using external program, connected physically to the mobile phone. The study of telecommunication is an interesting field because it involves digital signal processing, signal and systems, programming and more. This inspires people to improvise the technology into daily use. In this project, the technology of telecommunication, to be specific; SMS, is integrated or improvised to the present vehicle security system. Instead of human to human telecommunication, this system creates new entity which is machine to human telecommunication. This system is an upgrading and improving vehicle security system by integrating SMS features to alert vehicle owners whenever intrusion occurs. This project involves hardware and software parts construction and the integration of both parts to create the system. We succeed in achieving the objective and in fact, add another feature to the system which will initiates a call to the owner after sending the SMS. In the end of this project, we will document all the hardware and software development and provide a simulation model of the system. An interfacing mobile is also connected to the microcontroller, which is in turn, connected to the engine. Once, the vehicle is being stolen, the information is being used by the vehicle owner for further processing. The information is passed onto the central processing insurance system which is in the form of the sms, the microcontroller unit reads the sms and sends it to the Global Positioning System (GPS) module and using the triangulation method, GPS module feeds the exact location in the form of latitude and longitude to the user’s mobile. By reading the signals received by the mobile, one can control the ignition of the engine.

Mobile phone is a hand-held communication device, the popularity of which has increased unbelievably over the past few years. This is not only because of the ability to make calls but also due to the Short Messaging Service (SMS) provided. Although, the number of people using mobiles is a myriad, there are still people who depend on landline phones for communication. The only way of communication in a landline phone is through voice/speech. Landline phones are not compatible with the short message service provided by mobile phones due to the absence of a screen to display the message received. E-mail is another means of communication, by which digital messages are sent from an author to one or more recipients. The SMS sent from a mobile phone to a landline number or other mobile phone is converted into voice and sent via e-mail to the recipient. The system aims at sending the text message, as a 3 step process First among them is pre-processing, second is synthesis of speech and finally, transmission. During pre-processing, the shorthand notations in the text message are converted into proper English form. In the second part, this pre-processed text is converted into speech. The final step covers the process of sending the synthesized voice message to the recipient. This system comes in handy when people with speech impairment want to send messages to other people, in the form of voice.

Compression of short text strings, such as the GSM Short Message Service (SMS) and Twitter messages, has received relatively little attention compared to the compression of longer texts. This is not surprising given that for typical cellular and internet-based networks, the cost of compression probably outweighs the cost of delivering uncompressed messages. However, this is not necessarily true in the case where the cost of data transport is high, for example, where satellite back-haul is involved, or on bandwidth-starved mobile mesh networks, such as the mesh networks for disaster relief, rural, remote and developing contexts envisaged by the Serval Project [1-4]. This motivated the development of a state-of-art text compression algorithm that could be used to compress mesh-based short-message traffic, culminating in the development of the stats3 SMS compression scheme described in this paper. Stats3 uses word frequency and 3rd-order letter statistics embodied in a pre-constructed dictionary to affect lossless compression of short text messages. This scheme shows that our scheme compressing text messages typically reduces messages to less than half of their original size, and in so doing substantially outperforms all public SMS compression systems, while also matching or exceeding the marketing claims of the commercial options known to the authors. We also outline approaches for future work that has the potential to further improve the performance and practical utility of stats3.

The population alarm systems do not represent a new concept. Since hundreds of years ago the man used either smoke signals generated from certain upper locations, visible from long distance, getting through acoustic systems placed on high buildings, until now when mass-media channels extended the possibilities by the television and radio. However, either one of those mentioned above requested the individual to be located at the alarming moment in the area of action of the alarm. Otherwise, the message has no efficiency. This limitation is currently solved by additional communication channels such as the internet and the mobile networks. Messages are now able to be sent to the mobile screen, and the user can reply to messages either by using the short message service (SMS) or by emailing to someone, to a server, to a center. From the general pattern of alarming the population on certain events, the medical applications represent a very important field. Messages are sent from the patient to a central medical center and back to the patient. This paper focuses on the value that virtual tools developed with LabVIEW brings to us.

Traditional compression algorithms appear to be largely unsuccessful with regards to short strings. In developing countries without connectivity to the web and data infrastructure, SMS remains one of the few ways of handling text-based information. With SMS service providers typically charging for SMS messages on a per-message basis, there exists a need to provide some form of short string compression, specifically with regards to highly structured data. This paper seeks to answer whether or not dictionary structures produce better results of compression than traditional algorithms with respect to highly structured data.To determine whether or not this approach would work, we developed a configurable parser that, when properly configured, accepts the various forms of structured data as provided by the client. We then compare the results to traditional compression mechanisms and measure the success.

Short messaging service (SMS) is perhaps the most popular mobile technology prevalent among students in higher education due to its ubiquitous nature and the capability of two-way communication. However, a major limitation in two-way text messaging is sending back a part of received data with the reply message. This limitation results in users of a mobile learning environment being unable to reply back to the correct destination. This article presents a two-way text messaging system that can be integrated into a learning management system (LMS) to provide an interactive learning experience to the user community. Initially, a database is integrated into the LMS that holds message information such as recipient’s phone number, message body and user data header. A specific port associated with the SMS is used to conceal and exchange data of a particular course unit. Subsequently, software in the student’s mobile device captures this message and sends back the reply message to the appropriate course unit allowing both teachers and students to view messages sent and replies received pertaining to a particular course. Results indicate the educational impact of the proposed system in improving the learning environment and benefits it offers to the community in a campus-wide implementation. Keywords: SMS; UDH; PDU; LMS; concealed data (Published: 10 November 2016) Citation: Research in Learning Technology 2016, 24 : 31818 - http://dx.doi.org/10.3402/rlt.v24.31818

As the use of Android mobile phones grows, botnets are increasingly targeting smartphone features, which calls for further research on mobile botnet detection. Short Message Service (SMS) has become increasingly targeted by a number of malicious applications ("apps") that have the ability to abuse SMS features in order to send spam, to transfer command and control (C&C) instructions, to distribute malicious applications via URLs embedded in text messages, to send text messages to premium-rate numbers, and to exploit smartphones. In this paper, we propose a SMS- based mobile botnet detection module that employs unsupervised learning techniques, using clustering algorithms to group SMS messages into four classes and to classify reported text messages to one of those four classes. The module also uses a robust and efficient behavioural profiling analysis to detect whether there is any correlation between cluster outputs and alerts from reported profiles. Rule- based correlations are used to label SMS messages as either normal or malicious.

SMS (Short Message Service) is a messaging service in the mobile communication environment. In sending messages via SMS, message security is essential in order to maintain the integrity of the authenticity of the messages. Messages are secured not only in the aspect of confidentiality, but also on how the delivered message is not altered by someone. To overcome these problems, digital signature is required. Elliptic Curve Digital Signature Algorithm (ECDSA) with Boolean Permutation (BP) is one of the algorithms used for the process of adding and verifying the digital signature on the message. ECDSA is a public key cryptographic algorithm that is suitable to be implemented on devices with limited resources such as, mobile device or mobile phone. This is because the keys of ECDSA have relatively smaller than other public key cryptographic algorithms. ECDSA and Boolean Permutation can be implemented on mobile devices based on Android, and be able to verify the authenticity and maintain the integrity of SMS sent with several characteristics, such as, SMS that contains of letters, numbers, emoticons with the length of SMS that can be authenticated is 4 SMS - long in one delivery process (long messages).

Short message is one of the most common communication media for mobile subscribers, so major mobile operators are devoted to improve their Short Message Service (SMS). However, the annoying and undesired messages, also named message spam or simply spam, not only worsen the users' experience, but also cause their complaints on SMS. In this paper, we present a novel Chinese SMS spam filtering framework based on AdaBoost algorithm to provide accurate and effective short messages classification. Three content-based weak filters are introduced to boost the performance of final classification decision. Results from Receiver Operating Characteristics (ROC) analysis prove the proposed method has such advantages as higher efficiency and fewer parameters over those established SMS spam filtering methods. The application of the proposed method is expected to block the most spam for mobile subscribers and improve the service quality of SMS. With simple data processing and few training parameters, the proposed method can be applied into the practice of short text classification.

Text messages sent via the Short Message Service (SMS) have revolutionized interpersonal communication. Recent years have also seen this service become a critical component of the security infrastructure, assisting with tasks including identity verification and second-factor authentication. At the same time, this messaging infrastructure has become dramatically more open and connected to public networks than ever before. However, the implications of this openness, the security practices of benign services, and the malicious misuse of this ecosystem are not well understood. In this paper, we provide the first longitudinal study to answer these questions, analyzing nearly 400,000 text messages sent to public online SMS gateways over the course of 14 months. From this data, we are able to identify not only a range of services sending extremely sensitive plaintext data and implementing low entropy solutions for one-use codes, but also offer insights into the prevalence of SMS spam and behaviors indicating that public gateways are primarily used for evading account creation policies that require verified phone numbers. This latter finding has significant implications for research combatting phone-verified account fraud and demonstrates that such evasion will continue to be difficult to detect and prevent.

Short message service (SMS) is popular used for data bearer/service within GSM, CDMA, and other cellular networks. However, the traditional SMS messaging does not provide the security services such as confidentiality, integrity, authentication, and non-repudiation, etc. In this paper, we propose a secure SMS protocol (SSP) at application layer and design the format of the secure message packet, and we design and implementation the secure SMS messaging system. This solution will help commercial companies and government authorities who need confidential information transmitted over the air to build secure SMS messaging.

Phone lost has been a major problem these days. This case can happened because of the user own fault (he place it in the wrong place and forget it) or because of intentional phone stealing. Seeing many of this missing case we try to develop a system for tracking and securing a missing phone. Android platform is selected because it is one of the best operating system for mobile phone right now and the user growth is very promising. This application will give an extra security when a phone gone missing, as we know we store a lot of sensitive data on our phone. The system work flow is very simple actually, our application will be on standby and monitor command that it received via SMS and it will work in the background so user won’t be get any distraction from this application. Using these commands user can lock his phone, sound the phone alarm, delete his phone data, get his phone data, and get his phone last location. This application have some other feature too, like lock his phone when someone change his phone card and send the new number that attach in his phone to the owner. When system get any request about phone's last position then system will process that request to get phone's latitude and longitude via GPS, after that system will quietly send it to the owner.

Peer-to-Peer (P2P) communicating is a networking and distributed communication paradigm which allows symmetric sharing of messages between two entities, ideally without any interception from any third entity. Privacy in peer-to-peer communication is, however, can be compromised via a large number of approaches.It is thereforea need of the hour to provide security against eavesdropping and electronic surveillance while exchanging confidential and/or personal information. SMS or Short Message Service is the most widely used mode of communication for information exchange around the globe. In this paper, an approach to android application is presented which will be helpful for users of android based mobile phones to share textual information via SMS without the fear of it being intercepted by any middle-man. A cryptography technique is implemented which avoids the leakage of clear messages that is being transferred from one end to the other, by encrypting it using an already exchanged private key, thereby making the middle-man unable to decipher the intercepted information. The private key exchange is done using the Diffie-Hellman key exchange algorithm, and AES-128 is used as the encryption/decryption algorithm. The messages sent and received are stored in a database accessible by the application, for future reference to the messages. The implemented application was successfully tested on Android Virtual Machine as well as on mobile phone running android version 2.3. The message received was a random jumble of characters and the original message was available only through the application.

The amount of Short Message Service (SMS) spam is increasing. Various solutions to filter SMS spam on mobile phones have been proposed. Most of these use Text Classification techniques that consist of training, filtering, and updating processes. However, they require a computer or a large amount of SMS data in advance to filter SMS spam, especially for the training. This increases hardware maintenance and communication costs. Thus, we propose to filter SMS spam on independent mobile phones using Text Classification techniques. The training, filtering, and updating processes are performed on an independent mobile phone. The mobile phone has storage, memory and CPU limitations compared with a computer. As such, we apply a probabilistic Naive Bayes classifier using word occurrences for screening because of its simplicity and fast performance. Our experiment on an Android mobile phone shows that it can filter SMS spam with reasonable accuracy, minimum storage consumption, and acceptable processing time without support from a computer or using a large amount of SMS data for training. Thus, we conclude that filtering SMS spam can be performed on independent mobile phones. We can reduce the number of word attributes by almost 50% without reducing accuracy significantly, using our usability-based approach. Copyright © 2012 John Wiley & Sons, Ltd.

Mobile devices have revolutionised the world. They are now being used for M-Commerce applications. Their affordability, high availability, and usage convenience has made SMS based M-Commerce to take over ecommerce. Nowadays it is used as an alternative for online transaction systems. The SMS facility available in mobile phones is used for communication between client and server modules. The regular encryption and decryption algorithms cannot be used as mobile devices have limited memory and processing power. Keeping these limitations in mind a new framework is proposed. It involves suitable encryption and decryption algorithms and a frame structure. The proposed framework is implemented for a banking application. The user sends the SMS after encryption to the bank server through his mobile phone. The bank server is programmed to poll the modem for messages. On the arrival of a request, the bank server decrypts and authenticates the message before servicing it. The serviced reply is again secured by encryption before the transaction, details are sent back to the client as another SMS using the modem. The client decrypts the received messages and displays appropriate results to the user.

This article investigates how text messages and mobile phone calls interrelate as parts of continuous communication sequences. Based on the recorded mobile communication of 14-year-olds in Denmark and a conversation-analytic approach, the article will show that after a text message in a continuous communication sequence, four different types of conversation may follow: the answer (after a text message demanding a reply), the reminder (in case of a missing text message), the resumption of conversation (after a closed text message exchange) and the confirmation (after a text message with a request for/promise of a call). In itself, the change from text message to conversation requires no interactional efforts from the participants. However, changes of mode are related to the different communicative possibilities the text message and the phone call offer: text messages and calls have distinct formal qualities that govern their uses, and participants in a given sequence move between the two modes, exploiting the potential of each as they ascribe meaning to the written and spoken media.

This paper describes a software application for android mobile platform that discovers various excited applications of SMSs over its traditional text messaging application. It shows how various features in android mobiles can be automated by SMS. By this application user can perform various operations in its mobile even if mobile is very far from him , like by sending a single text message we can fetch and store our contact numbers, fetch our device's location, auto respond to the incoming messages, send SMS from our remote mobile, fetching SIM and mobile details used for GSM network. Convenience to the user, security and efficiency are main issues that are considered. This application makes the use of services like telephony, location based services (LBS) and native android applications. Index Terms—Android, LBS, new SMS applications, telephony. I. I NTRODUCTION SMS is very common and widely used way of communication. Now-a-days we do most of the communication with SMSs. Today in the era of technology we want most of the things to be automated. Imagine that it would be great if we could perform various functions in our mobile phones even if it is far from us or it could respond automatically like an intelligent device. So now this can be achieved by our SMS software application which is developed for android mobile platform. By using this application we can operate many functions via sending a SMS to the mobile phone which is far from us without interception of operator and in this way our android mobile phone will act as intelligent device. This application establish client-server relationship between mobile phones in which the mobile requesting operations by sending SMS will act as client and mobile serving those operations will act as server. Various operations that can be performed by this application are listed as storing and fetching contact numbers, fetching the device's location, sending SMS to other mobile phones through our remote mobile, auto responding to the incoming messages, finding and fetch the details about SIM and mobile like and we can also switch off our mobile via sending a SMS to it. This application makes the use of both traditional and advance technology like telephony and location based services (LBS). These services are also used in various applications but we are presenting them in very different way from there conventional use. There are some issues that have

2 Abstract: There are so much daily routine application where the SMS is being used including medical purpose, banking purpose and any other mobile purpose. Forwarding an SMS is one of the cheapest, fastest and simple method. When we delegates message from one cell phone to another cell phone, the data contained in the message transmit as a vanilla text (unencrypted text). Consistently this data contained in the message may be arcane (private) like bank account number, identification key, and license number and so on, and it is an extreme trouble to transfer such data through message until the traditional message courtesy dose not supply (give) encryption to the data contained in the SMS before its transmission.

This paper proposes a mobile phone based security and control system for home appliances through SMS/Bluetooth. It focuses on controlling home appliances remotely, and providing security with good graphical user interface. The system uses GSM technology, providing ubiquitous access to the system for security and automated appliance control from anywhere around the globe. The system provides security against intrusion using a smarter digital lock which notifies owners in case of an unauthorized via SMS message, as well as facilitates both short and long-range device control using Bluetooth or SMS technology. Rather than a conventional method of sending an SMS message to control devices, a graphical user interface is designed using Python S60 language for ease of use. The control signals in the form of SMS messages are encrypted and restricted to unique mobile phones or SIM cards for improved security.

We propose a new system for SMS information display board. The system will display texts and icons of a message on the matrix LED. To sending a message to the system, A user have to send a message SMS on a mobile phone. It's mean, the user can be anywhere in the range of mobile signal to control the message on the display board. Furthermore, the user is able to control the pattern, speed and time duration of the display message. In additional, the user can set the time of the message to display on the system in advance or cancel it. The system provide the security by using password method to verified the authorize user only. Finally the system can apply to variety of usage with a lot of concurrent users and message scheduling application.

Network administrators are always concerned about either not getting notified or late notification about occurrence of a sudden failure in the network, or not being able to come up with a proper solution even if informed. The reason behind such a concern is that the network administrators are constrained by physical presence on the network site or access to the Internet. The present article introduces a novel method for mobile control and management of computer and telecommunication networks. In this method, an application program is installed on one of the systems under management network or any system which can access the Internet. Then, using SNMP, the application program collects the information required by the network administrator and communicates the same to him/her via the most comprehensive communicational service; namely, Short Message Service (SMS). In like manner, the network administrator can send his/her commands to the application software via SMS. Having received the commands and using SNMP, the application software executes them on those pieces of equipment intended by the network administrator. By this method, network administrators will be able to control and manage their networks fully just by sending a short message rather than needing access to the Internet or having to be present physically on the spot.

In order to provide essential data services, the cellular networks have opened interface with Internet enabling communication with the users beyond the coverage of their wireless signals across the globe. Besides economical expansion of the global system for mobile communication (GSM) services, this interface has given birth to new security challenges. Especially recent research has divulged that an adversary equipped with little more than a cable modem can block all voice communication in a metropolitan area or even in entire country of the size of USA by sending enormous short message service (SMS) traffic via Internet. To overcome this threat in particular and other client–server communication problems in general, a new secure protocol, Call-Back Authentication (CBA), for web to phone SMS communication is proposed. The protocol introduces two-tier server architecture and pulls data traffic control (PDTC) mechanism for secure communication. The protocol is aimed to throat-knot malicious traffic at GSM–Internet interface gateway. The results show that the CBA protocol secures all GSM services from Internet originated SMS floods. Moreover the authentication mechanism of the CBA protocol identifies and blocks the spoofed as well as the zombie requests. The CBA server requires lesser resources to deliver SMS as compared to existing mechanism.

A new framework combining proactive search with mobile hypertext lets mobile phone users avoid text entry and tailors search results to suit the context. Mobile phones and devices are evolving steadily, adding increasingly advanced capabilities. Today's smart phones, for example, have PClike functionality with complete operating system software that provides a platform for developers. Even phones without an operating system often have such functions as email, Internet navigation, music players, e-book readers, and GPS, in addition to the usual text messaging (short message service, SMS), camera, and phone. So now, besides holding telephone numbers and text messages, mobile phones also allow access to video clips, calendars, task lists, notes, and so on.

The widespread use of cell phones has led to the proliferation of messages sent using the Short Messaging Service (SMS). The 160-character limit on text messages encourages the use of shortenings and other shortcuts in language use. When bilingual speakers use SMS, their access to multiple sources of vocabulary, sentence structure, and other language devices would appear to provide additional resources for addressing the character limits imposed on SMS, perhaps by increasing the available pool of short phrases and words. In two studies, the benefits of having multiple languages to draw on during text messaging was evaluated. Study 1 was an archival study in which a corpus of text messages from English―Spanish speakers was analyzed for message length. The results showed that individual messages involving code switching were longer than messages written in only one language. Study 2 was an experimental study in which English―Spanish speakers and English-only speakers played a texting game devised to encourage efficiency in SMS communication. The results from the game revealed that messages from English―Spanish players were no shorter than messages from English-only players. Overall, the data from the two studies provide no evidence that bilingual users of SMS draw upon their multiple languages to increase communication efficiency. Language switching during SMS does not appear to be a means of dealing with character limits.

This paper investigates a novel algorithm for compressing and encrypting Arabic short text messages (SMS messages). Short text messages are used in cellular networks. Compression is required for saving the transmission energy or to use bandwidth in an efficient manner in addition to save the user money while the end-to-end effective encryption is required for security providence. This work succeeded to overcome small size limitation of the SMS message by changing Arabic characters coding from Unicode to Base64 coding scheme and developing a runt version of lossless Huffman coding scheme. Examples are shown where the application of the text compressor for short message services offering more than three times the capacity compared to a standard message.

Since the first SMS (Short Message Services) message was sent in the UK in 1992, the SMS has become a mass communication tool and has been broadly used in mobile business applications. But the security issue of the SMS has often been considered as a crucial barrier to its application in many fields that need strong authentication and confidentiality, such as mobile-commerce. The Subscriber Identity Module (SIM) inside mobile phones is a tamper resistant device which contains strong authentication mechanism and has been used in remote user authentication system, e.g. WIM card in Wireless Application Protocol (WAP). In this contribution, we design and realize a secure SIM card, named PK-SIM card, which is a standard SIM card with additional PKI functionality; based on the PK-SIM card, we present a security framework offering solutions for the development of secure mobile business applications using SMS as bearer. The security framework consists of a client device, in which a PK-SIM card is used to store security credentials, a Secure Access Gateway (SAG) which is used to receive and send secure SMS messages, a trusted third-party, Certification Authority (CA), which provides a public-key certification service and a Mobile Operator which provides the communication infrastructure for the SMS. Then we propose an authentication and session key distribution protocol which provides end-to-end security between the PK-SIM card and the SAG, and give a formal security analysis to the proposed protocol based on BAN authentication logic. Lastly, we provide a typical application of the security framework in Mobile Police Information System. The evaluations of the system have proved that the security framework is suitable for actual needs both in speed and security.

This paper reviews the use of mobile phones for delivering examination results via Short Messaging Service (SMS) in a university where student who have written examinations and are anxious to see their results need to get their grades in a convenient and accessible way, whether in the comfort of their homes, on the road, or while at work. At this time, a mobile phone is accessible to most students, and they take it almost everywhere with them. This technology can, therefore, be highly effective in bringing information to them quickly, easily, and while they are on the move. An SMS result checking system not only enables students to request their grades, the system can also deliver the grades to their phones as soon as the grades become available. This means that they can access their grades even in the remotest locations where internet service might be unavailable, preventing them from accessing the school’s website. This version is an improved version of the system presented previously (Adagunodo, Awodele, & Idowu, 2009). The former system requires the user to submit an ID with a password, which is common to many SMS systems. The present system uses a social interaction with the password to reduce the incidence of guessing access codes occurring in the checking system.

Short Message Service is usually used to transport unclassified information, but with the rise of mobile commerce it has become an integral tool for conducting business. However, SMS does not guarantee confidentiality and integrity of the message content. This paper proposes a protocol called SMSSec that can be used to secure an SMS communication sent by Java's Wireless Messaging API. The physical limitations of the intended devices such as mobile phones, made it necessary to develop a protocol which would make minimal use of computing resources. SMSSec has a two-phase protocol with the first handshake using asymmetric cryptography which occurs only once, and a more efficient symmetric nth handshake which is used more dominantly. What distinguishes this work from conventional protocols is the ability to perform the secure transmission with limited size messages. Performance analysis showed that the encryption speed on the mobile device is faster than the duration of the transmission. To achieve security in the mobile enterprise environment, this is deemed a very acceptable overhead. Furthermore, a simple mechanism handles fault tolerance without additional overhead is proposed.

Various mobile contents have been developed with the spread of cellular phones. Above all things, nowadays, an idle application services are developed through competition in mobile phone manufacturers and mobile communication companies. In this paper, we propose that the idle application with text message service is easy to receive and edit. It is complement to function of SMS in use and can be effective information managing method, for example, it arrays messages and uses diary feature to set permissions when it send and receive standardized text message. We expect that proposed service will be adopted without additional cost in wireless units.

In order to solve security problems such as user privacy information revealed after mobile phone lost, based on Android broadcast mechanism and backstage service technology, improved data storage way and self-startup mode of original mobile phone security software, added SMS encryption、 message broadcast priority interception and sandbox breakthrough technology, a mobile phone anti- theft tracking system with remote SMS management function was designed and implemented. The software not only owned basic anti-theft function of automatically remove sensitive information to protect user privacy security after mobile phone lost, but also silently monitored、GPS positioned for lost phone and got the latest contacts to track stolen phone. Real machine and simulator two experimental results show that the system is running well, can achieve desired design requirements.

This study evaluated the short message service (SMS) and multimedia message service (MMS) usability of mobile phones and wireless internet services by performance failure rates and flowcharts that adopted the concept of state diagrams. Forty-eight participants who had an experience of using mobile phones were recruited by posting an advertisement on websites for the experiment. They carried out both SMS and MMS tasks with the mobile phones of LG Cyon and Samsung Anycall as well as the wireless internet services of LGT ez-i, KTF magicN, and SKT NATE. In general, Cyon had the lower performance failure rate than Anycall for SMS, and ez-i had the lowest performance failure rate than the other services for MMS. More specifically through the workflow analysis, most participants used hot keys to take 7~8 steps to send a SMS including a symbol and had a difficulty in typing the symbol. They also took 10~11 steps to send a MMS after taking and attaching two pictures. Anycall, magicN, and NATE had significantly large error and failure rates due to the limited option of the menu paths that users could take and poor compatibilities of menu names and between menu and navigation keys. This study showed the possibility of use of flowcharts for systematic and specific usability evaluation methods and found the causes of performance errors and failures with mobile phones and wireless internet services to provide insight into their design.

Introduction SMS Banking is a Mobile technology that allows you to request and receive banking information from your bank on your mobile phone via Short message service (SMS). Individuals or corporate bodies can manage their bank accounts, check their account balances, perform check requests, money transfers, pay some bills, and perform other banking transactions using their mobile phones. There are two methods of SMS widely used in applications; they are the PUSH & PULL (Seylan Bank, n.d.). Push SMS is sending a message from an application (i.e. SMS Server in this case) to the Mobile Phone. It is a one way message. In other words, it's the mobile application (in this case, the SMS banking application) that initiates a message. An example could be a deposit alert, which alerts the user when a deposit is made to his/her account. Pull SMS is sending a request and obtaining a reply. This is a full duplex scenario where a user sends a request to the SMS banking application and the application replies with the information requested. An Example is when a user requests his bank account balance. The Need for SMS Banking The telecommunications industry worldwide has scrambled to bring what is available to networked computers to mobile devices (Schofield, & Kubin, 2002). Presently, the use of electronic banking is considerably high and as more and more users sign up for electronic-banking, the maturity as regards remote banking (i.e. banking outside the banking hall) is on the increase. With electronic banking, users can now conveniently carry out banking transactions, but this convenience cannot be achieved if the user does not have access to the internet, hence, in other words, the user cannot carry out a banking transaction while waiting for a bus, or perhaps while having lunch in a restaurant. With SMS banking, convenience can be achieved 24hrs a day. This is because a user has access to his mobile phone all day, at all times. So, to effectively achieve a truly convenient banking mode, a truly mobile mode of banking has to be explored, hence the need for SMS Banking. How SMS Works SMS stands for Short Message Service; it's a mobile technology that allows for sending and receiving text or even binary messages to and from a mobile phone. The relative ease of use of SMS makes it possible for a user to learn how to send SMS easily. More than 160 billion SMS are exchanged each month in European countries (Mavrakis, 2004). SMS use the GSM special signaling channel instead of the voice channel and is therefore a very reliable media channel. MAVRAKIS, 2004 identifies two types of SMS which can be classified by the origin of the message * Mobile Originated (MO): SMS-MOs' are sent from a mobile phone and could be sent either to another mobile phone (such when a mobile subscriber sends a personal message to another subscriber) or to a computer application that will process the message. * Mobile Terminated (MT): SMS-MTs' are transmitted to a mobile phone. They also could be sent by another mobile phone or generated by a computer application. The SMS processing computer applications usually runs on corporate servers that are connected to the SMS network through specialized connectors and gateways connected to the SMS Centers of mobile operators (Mavrakis, 2004). These servers are assigned short numbers instead of the traditional 10-digits mobile numbers. These numbers, also known as short codes are usually 4 to 6 digits long. These numbers are operator specific. Also, a premium fee (a fee other than the fixed rates for SMS) can be charges on these short codes; in other words, users would pay more for sending SMS to short codes. Data Mining In SMS Banking Due to the large number of users and the large amount of financial transactions expected to be carried out using SMS Banking, there is a need for methodologies of Knowledge Discovery and Data Mining (KDD). …