As long as it is unlocked, The Nokia 5300 should work just fine with At&t/Cingular. Keep in mind that the internet/messaging settings will need to be updated (should be able to update directly from the Nokia website). Another choice might be the At&t 8525 (also known as the HTC Tytn).
Hey. I'm in search of a new phone at the moment. I'm looking for one that is good for sending
texts/emails and taking pictures. Something Sidekick like. My phone provider is Cingular (AT&T).
I like that Nokia 5300. I'm not sure if I could use it unlocked on my serivice thought.