Yes, AT&T sells the iPhone in the store. You do not have to go to Apple to purchase one.
AT&T doesn't sell the iPhone 3GS in white.
The best place to buy accessories for the IPhone is AT&T because they sell the IPhone there. You can find them a lot cheaper on EBay, but they may be not from Apple.
You don't "have" AT&T, the iPhone comes with the ability to connect to AT&T.
No, T-mobile does not have the iPhone. AT&T has it though.
Your old iPhone can potentially be unlocked or rooted as long as you didn't have a carrier that restricts this action. Some that do are Verizon, US Cellular and AT&T. It would be better to trade it in than to take it to a pawn shop.
AT & T sell all kinds of phones. These range from the new Apple iPhone 5S to the Samsung Galaxy S4, Nokia. If you just ask the friendly staff at the store they will be able to help you.
T-Mobile does not have the Iphone only At&t does
It is 399 for the 8gb black iphone and 499 for the 16gb white iphone. you have to renew your 2 year agreement too.
There will not be an iPhone 4S for T-Mobile but you can get any iphone unlocked at unlockatt.com
Since the release of the iPhone, AT&T has had an exclusive contract with them. (Yes.)
Well, you have a 2-year service contract with At&t so you better check out that you can change your billing address and emails and name and everything first..
No