Sony Ericsson S700i
S700i work with AT&T Wireless?
Service Compatibility: AT&T Wireless, Cingular, Fido, Rogers AT&T, T-Mobile
So I went ahead and bought it since it was unlocked and it said it worked with AT&T. I just went back to the item page and noticed it had a thing that you could see if coverage for this phone was available in your area. This service was provided by cell mania. So i clicked on it and entered my zip code. It said it didn't work with AT&T in my area, but it worked for cingular. Is this just a problem with Cell Mania? I have AT&T service right now with my Sony Ericsson T616 phone. I didn't mess up did I?
Cingular uses the 850 and 1900 band. The Sony S710a is the version of the S700i for the americas, it replaces the 900 band with the 850 and the FM Radio with EDGE high-speed data.
Since you're lacking the 850 band with the S700i but still have the 1900 band available, your signal may just get a little weird. Many towers that only cater to the 850 bunch wont do a lick for you, but there will always be 1900 towers around for your calling pleasure. hope this clears things up.