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Tag: Mobile Service Provider
May 09
Cheap Unlocked Cell Phones: Switch Cell Phone Providers Without Losing Your Phone
The concept of unlocked cell phones goes like this. Carriers that operate on the Global System for Mobile Communication (GSM) such as Cingular Wireless, AT&T Wireless and T-Mobile use a Subscriber Identification Module (SIM) card. The SIM card is a microchip that stores subscriber data. It is issued by a carrier and provides cell service …
Mar 01
GSM Cell Phones
GSM (Global System for Mobile Communication) is the most widely used wireless mobile communication technology in the world. GSM cell phones are highly popular in Asia, Europe and Australia due to its excellent coverage and flexibility, as against to CDMA (Code Division Multiple Access). What is a GSM Cell Phone SIM Card? Unlike CDMA technology, …