Please take a look at my posting here..
hope this helps.
I'd like to go with Verizon, since they seem to have much better sound quality, signal strength around the SF bay area. I have Cingular right now and it is pretty bad, many dead spots, like at my house, inside at work, up in the foothills. But, I want to stay with GSM, since I travel to Asia and want to be able to have GSM to use my phone over there. Guess I could buy 1 CDMA phone for here, and another for using in Asia, but that is a hassle. So, is AT&T wireless GSM or T-mobile any better than Cingular in the SF Bay area? I heard T-Mobile uses the same GSM network at Cingular, so it would not be any better. Also, I have the Ericsson T28 World phone now, so not sure how much the poor reception is due to the phone. Maybe I could get a little better reception with Cingular by just using a better phone. Any thoughts? Thanks a lot.