Hello. I have a Genius Bar appointment tomorrow for a battery draining issue. I've been before for the same thing and they told me that it's a software issue and to restore and set up as a new phone. I did that. The battery still drained. I downloaded iOS 7 when it first came out, because someone signed me on their developer account list after I gave them my UDID. iOS 7 is glitchy as expected, and drains my battery drains. I even restored as a new phone yet again. When I go tomorrow, will there be a problem because I have iOS 7? I don't want them to be "revert back to iOS 6" because I really don't have time for that. Help please!