Why does iPhone randomly power off?

Question

My iPhone powers off at, seemingly, random times. It should not power off at all unless I power it off. Any explanations as to why?

Answer 1

Without more specific information it's hard to assist you.
First thing is it may be hardware failure which means you will have to take it to Apple store and see a genius expert. You will need an appointment first though.
There a several things to try first though as I have seen, and also experienced iPhones where the operating system appeared to lock up at what appeared to be random times which would eventually cause the phone to eventually reboot.
Usually though, if you pay enough attention as to what might be causing it, I was able to determine that it was a troublesome website or an application that caused iPhone OS to lock up.
You can usually try several things to fix this.
First try to work out what might be causing the problem by seeing if you can replicate what you were coin immediately before it happened. If it's an app that's causing the problem then remove it. If you can't work out what's triggering it then try a soft reset by pressing the home and power/sleep buttons til the phone reboot (you'll see the Apple logo reappear after the phone shuts down).
If this doesn't work then try doing a restore on the phone and first set it up as a new phone, then test the phone and see whether this has fixed it.
If this does fix it then you can try doing a restore again and instead of setting it up as a new phone use the option to restore from a backup. If the problem returns after you do this, then your software backup is somehow corrupted and you'll need to restore as a new phone and start resetting it up with all your old settings.
Anyways I hope this helps you in some way