The phone seems to be burning through data even when I'm on wifi.. How do I check to make sure that it is not disconnecting from wifi when ever I do something? When I was syncing it to iTunes I feel like a prompt asked me if I wanted to use cellular downloads or something? How do I make sure my phone does not update apps over cellular and does not excessively check other things over cellular? I'm a newb to the iPhone so if you have some tips to save data please tell me! Thank you guys!