KnightNews.com is investigating reports we’ve gotten that AT&T is giving away 1,000 free rollover minutes to iPhone customers.

According to multiple blogs, iPhone customers can text “YES” to 11113020 by March 31, 2011 to get the free minutes. AT&T should respond shortly after you send the message confirming it received it, although some people may take 30 minutes to get it back.

AT&T is offering these incentives to current iPhone customers to prevent them from jumping ship to the Verizon iPhone which is now available, according to the blogs. KnightNews.com has not independently confirmed the details of this reported promotion with AT&T.