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The article offers cell phone tips for frequent overseas traveler. In most cases, a global system for mobile communications (GSM) phone is the better choice because GSM networks are widely available throughout Asia, Europe, Oceania and South America. Travelers should get a quad-band or so-called world phone because foreign nations do not use the same GSM frequencies as North America does. If an individual have a GSM world phone, they should be able to get it set up for international roaming with their carrier, but be prepared for voice and data charges that will be much higher than what they are accustomed to paying back home.