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Originally Posted by birddog  Does anyone have a link to a good resource that explains the differences between some of the networks that are being used by the various carriers.
For example, What really is the difference between Edge, EvDO and CDMA2000 and which carriers are using them. |
CNET has an
overview of the various technologies.
Sprint and Verizon use CDMA. Their data connection is EVDO.
AT&T (Cingular) and T-Mobile are GSM phones. They use EDGE and HSDPA. The latter being faster.
GSM is the more predominant technology outside of the US.
For me, SIM card=GSM. No SIM card=CDMA.
-Chris