There are some issues with iOS 7. It get rebooted automatically at random time and once it is done then take at least 3 to 60 minutes until device is backup and running. Its very irritating problem and so Apple has promised the reboot issue with iOS 7 will be resolved soon with a software update. There is no specific reason that what causes the reboot but from most of the users have complaint that whenever battery goes down to 30 percent then it get restarted.
So far, reboot issue is reported in the iPhone 5, an iPhone 5S and an iPhone 5C running iOS 7 and so it is clear that issue has affected many of the users. Apple has not said anything about the root cause for this problem but a solution is promised to come soon as a update for your device. An Apple spokesperson told to Mashable, “We have a fix in an upcoming software update for a bug that can occasionally cause a home screen crash.”
It is expected that the iOS 7.1 will come in March 2014 and it will also bring solution for reboot along with it. It really irritates when your phone get restarted while you are using your phone. It is still not clear that how many users are affected by this issue. But Apple is now aware of this problem and they are already working on it to get this resolved as soon as possible and we really hope that the update will solve the issue for all.