My iphone 5S with ios 7.0.4 is crashing frequently,also gives 2 or 3 times daily black apple screen crashes wher the boot screen will come up for ten seconds or so and then go to the home screen. I have reinstalled the system from backup 5 times to no avail. I was sent the app from tech support but it showed no problems.
They told me to go to the apple store, but realistically will they swap the phone if the logs are clear? I hate to waste my time going there for them to tell me to do a backup again,which obviously didn't fix the problem.