Found this on the net
Alltel: CDMA
AT&T: GSM and TDMA*
Cingular: GSM and TDMA*
Nextel: iDEN**
Sprint PCS: CDMA
T-Mobile: GSM
U.S. Cellular: CDMA
Verizon: CDMA
Joepole, do you know if Cingular here in Shreveport TDMA? (and I'm excluding AT&T's network for the moment) I'm talking about Cingular's network. Is it purely GSM?
Although, I really don't think the issue in Shreveport is so much CDMA vs TDMA in this case with Cingular. No matter the protocol, I think Cingular just messed up and tried to pile too many users per "hertz" of radio bandwidth. A channel can only hold so many happy customers. As for AT&T, any network that is relatively "empty" should perform well IMO.
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