No catch, just cheaper than everywhere else. I was looking for an upgrade on my family plan, and amazonwireless only had the 19.99 price for new phones. It offered several different prices for different plan options, from 19.99 to 49.99 to 199.99. Definitely the best price if the customer is not new to AT&T.
Know how to save a wet phone?
It's not with a dryer and it's not with rice. CNET shows you the secret to saving your phone.