Not long after Apple was hit with a class action lawsuit over the iPhone 4 and its glass body, AT&T is now getting involved in its own suit concerning the iPhone, iPad, and data charges. The suit has been filed by Patrick Hendricks, who claims that AT&T is overbilling iPhone and iPad customers for data charges. According to a two-month study conducted by a firm hired by Hendricks' attorneys, AT&T has magnified data charges by 7 to 14 percent on a regular basis, and sometimes overstates the charges by as much as 300 percent. Additionally, the study found that a new iPhone account was billed for 2.2MB of data over a 10-day period, even though the device had all push notifications and location services off and no apps or email accounts active. An Apple support forum user has reported similar experiences. AT&T has responded to the claims, saying that it will "defend [itself] vigorously."

These are pretty serious claims against AT&T, especially the research firm's claims that they were charged for data use even with no apps running or email accounts active. An overcharge of 7 percent may not seem like much, but when you add several of those instances up over a months time and combine them with AT&T's 200MB data plan, that can add up to quite a large chunk of a user's allotted data. We'll update you as more information comes to light, but in the mean time, have any of you AT&T customers been hit with data overcharges?

Via BGR, ComputerWorld (Image via Flickr)