I've been through 4 iPad's 4th gen that started to freeze shortly after the new IOS update, I wish you could go back to IOS 6 as it had no issues at all, even with the new IOS you can't scale a photo to fit the screen properly, what are they thinking, i called them on this the very first update, you'd think that during beta testing they would have had a fix, Apple techs were stunned when i brought it to there attention. Just received my new iPad replacement, 4th one as all others shut off, still played music while screen was black, always had to hard reboot, I believe it's the IOS and not the iPad as I mentioned to the Apple techs, still no fix as of yet. If you have an Apple care warranty keep bugging them until you get one that works, it's what i have to do, if you have no warranty you're stuck. Try setting it up as new without adding any of your apps and see if it freezes up, then add two apps at a time, process of elimination. However i found that it wasn't any one app, it froze up regardless, hope this helps.