GSM SIM Card, Used with Carriers Operating on Global System

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Product Description

Used with carriers that operate on the global system for mobilecommunication network

The competing network is code division multiple access, atechnology created by US company Qualcomm

As of fall 2005, CDMA cellphones and CDMA carriers do notsupport SIM cards in most parts of the world, though this ischanging

A CDMA SIM card called the R-UIM (reusable identificationmodule) was made available in China in 2002, and will eventually beavailable worldwide

Expectations for the future include a cell phone market thatsupports both SIM (GSM) and R-UIM (CDMA) cards by default

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