An online survey sent out by AT&T to iPhone users hints at a possible iChat application for iPhone. iChat is the messaging application Apple includes with its Mac OS X operating system. One of the slides in the AT&T survey asks users to rate the EDGE network performance when using various applications on the iPhone. iChat is listed along with YouTube, Google Maps, Email, Weather, Stocks, and Search. While it is possible that Apple is working on a version of iChat for the iPhone, it is also possible that the survey meant to reference the iPhone’s SMS text messaging application, which looks and acts quite similar to Apple’s desktop messaging applicaiton.