If you're looking to buy a new iPhone, you may want to take advantage of AT&T's new trade-in promotion launched earlier this month. If your smartphone is in working order, and you purchased it within the last three years, AT&T will give you at least $100 for it. You can use its trade-in calculator to see how much you'll get for your old phone. It also will take feature phones in trade, but may give less than $100 for them. You can also trade in tablets and netbooks. AT&T will give you an AT&T Promotion Card good for purchasing products and services, or, if you wish, you can donate the value to Cell Phones for Soldiers. According to the promotion, "working order" means the phone can be turned on and off, the screen works, the phone has no damage, and the battery can be recharged.
Once you've determined the value of your phone, you can use the same website to print out a prepaid mailing label and trade‑in receipt. AT&T pays the shipping costs. You'll get your promotion card in about four weeks. You also can trade in your device at any AT&T store and receive an instant in-store reward toward a new device, product, or service.