History: GSM Cellular

-=GSM Cellular=-

GSM is the cellular network used by US vendors Cingular and T-Mobile for voice and data communications. The data services are known as GPRS (General Packet Radio Service) (19.2kbit/s), EDGE (Enhanced Data rates for GSM Evolution) (200kbit/s) and UMTS (Universal Mobile Telecommunications System) (2mbit/s). The data services are an additional charge based on kilobytes sent or received or unlimited for a month depending on the plan chosen. Currently only Cingular offers UMTS in the US.

Windows Mobile Pocket PC and Smartphone are both available with GSM from Cingular and T-Mobile as well as manufacturers such as HTC.

===Links===
[http://www.pocketpcfaq.com/faqs/cellularprimer.htm|Cellular Data Primer]