Recently updated Samsung s7 phone and since then occasionally phone turns off and back on

[AC Question]

It's done it 4 times now

 

[B. Diddy]

Welcome to Android Central! Try wiping the cache partition: https://support.t-mobile.com/docs/DOC-28028

 

[david batch]

Thanks will try it and let you know

 

[david batch]

No sorry its done it another 6 times today alone

 

[B. Diddy]

Is it actually rebooting or powering down, or is it only the screen that's turning off and on?

 

[david batch]

It's actually turning off and back on and seems to be doing it more frequent now

 

[B. Diddy]

I'm still not clear on what you mean. Is the phone powering down on its own and then powering back on, or is it just the screen that's turning off and then on? In other words, when the screen comes back on, do you see it go through the whole boot process?

 

[david batch]

Yes the phone is powering down and then back on by its self

 

[B. Diddy]

There are a number of things that can cause that. It might be a 3rd party app that's causing instability, or it could be something corrupt on the SD card. You could try booting into Safe Mode and see if the reboots still happen: https://support.t-mobile.com/docs/DOC-28008. Or you could Unmount the SD card (in Settings>Storage​) and remove it, then see if the reboots still happen.

 

[david batch]

Have done all these and so far all is well thank you for you help you have being very helpful and i appreciate it

 

[david batch]

After a day with out any noticeable turn off and ons today there has being quiet a few so all that I have done so far hasn't worked I'm afraid any other suggestions?

 

[B. Diddy]

When you were in Safe Mode, it didn't reboot at all, correct? How long were you in Safe Mode? Although it's not very convenient, it may be worth running the phone in Safe Mode for an entire day, to see if the reboots still happen. If not, then it's more likely that something you installed is causing the problem.

If you don't have any hints as to what app might be causing the issue, then it gets pretty tedious, I'm afraid. You may just have to uninstall apps one by one, and then see if the reboots go away. Since the problem is intermittent, you might have to uninstall only one or two apps every day or two. If the reboot happens again, then you know those apps aren't responsible, and you can reinstall them. Then choose another one or two apps, and uninstall those.