Which Do You Select-Tri Band Or Quad Band Phones?

The major advantage to tri-band and quad-band mobile phones is that they can be used internationally. Tri-band and quad-band mobile phones operate on the Groupe Speciale Mobile or Global System for Mobile Communications (GSM) network, which is the most popular network for mobile phones worldwide.

GSM mobile phones operate on different band wavelengths, depending on the home base of the wireless service provider. In the United States, Canada and many parts of Latin America, mobile phones use the 1900 and 850 bands. In Europe and much of the rest of the world, the 900 and 1800 bands are used exclusively.

Quad-Band Phones

Quad-band mobile phones operate on all four GSM networks and can be used nearly worldwide. However, they are usually more expensive than tri-band mobile phones.

Locked Versus Unlocked Mobile Phones

Many mobile telephones are locked, which means they can only be used with a particular service carrier. In this case, even with a tri-band or quad-band mobile phone, the user must usually ask the carrier to enable the phone to be used for international travel. On the other hand, unlocked tri-band or quad-band mobile phones-or a phone not connected to a particular carrier-allows users to substitute the Subscriber Identity Module (SIM) cards when traveling internationally.

Tri-Band Phones

Tri-band mobile phones are generally less expensive than quad-band phones. They usually support the 1900, 850 and 1800 GSM network bands, which is sufficient for use in the Western Hemisphere and Europe.

Tri- and Quad-Band Prepaid Phones

Prepaid mobile phones usually cannot be used internationally, even if they're tri band or quad band. In countries such as South Korea and Japan, tri-band and quad-band mobile phones don't always work because neither country uses the GSM network.

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Internet reference: http://www.ehow.com/about_5089627_quad-band-tri-band.html

Editor: Vivian