Z5C Reboots since marshmallow

[chandre16]

Hi Everyone

I bought a Z5C a couple of months ago, and although I quite like it, I have been having issues since the Marshmallow upgrade arrived on my phone.

Every so often (average once per day, more often if I'm using it for something intensive like navigation) the screen will freeze for a few seconds, go blank, then the led will flash red and the device will reboot.  I can't tie the reboots to any particular app or activity, and sometimes it even happens overnight.  I've tried the software repair to no good effect.  Any ideas on how to debug or otherwise address this?

Thanks very much

Charlie

[RobertoDS]

Tap 7 times on Build then u're being Developer and inside new Settings u'll find how to send a LOG to Sony but in few hours, I think, they'll answer u how to get in touch with them , so stay tuned here

[chandre16]

Thanks, Robert, sadly it offered my no guidance on submitting logs etc.

Anyone from support able to offer any insight?

[nitoppi25]

Z5 premium dual. Having the exact same issue since marshmallow update. Sony have knowingly released broken software, and as yet are refusing to (or can't) fix the issue, even though they have had two goes at it so far.both versions of marshmallow released so far are a bad joke. My advice is to revert back to lollipop where as if by magic your phone will work again. Mmmm... I wonder what the problem could be?

[seventiesandy]

I have a new Z5C and recently started experiencing this same problem. Did repair and reinstalled software last night and have has 57 system incidents (reboots) since. How do I revert to lolipop?

[Redream]

I have this problem with my z5c. Random reboots 1-2 times in day. How fix it??? I'll did repair with PCcomp, but it not working(

7 anroid may fix it? 

[Jonas]

Hi @Redream, welcome to our forums!

I'm sorry to hear about that.

When you performed the software repair, did you restore a backup directly after the repair was completed and/or started to install apps again?

If you did, some of the data in the backup or the applications may be the cause of your phone restarting.

I would recommend that you restart your phone in safe mode and that you use the phone as normal in there for a day or two and see if you still experience these restarts. When the phone is rebooted in safe mode third party application will not be loaded, just to make sure that they aren't the cause of these restarts.

You can also remove your SIM and/or SD card and see if the phone continues to restarts, a faulty or defect SIM and/or SD card can cause your phone to restart.

Let me know how it goes!

[Redream]

Hello. I'm reinstall system with Xperia companion without backup. Not install SD card. Not install other programs. And it not fix my problem((( Device reboot after 14 hours after start working.

[Redream]

But today I have subsystem incidents. Earlier I had only system incidents.

[Jonas]

Thanks for the update!

I'm sorry to hear that the phone is still restarting.

Try removing the SIM card from the phone as well, since a faulty or defect SIM card may cause your phone to restart.

If you are still experiencing that the phone is restarting without SIM and SD card mounted in the phone while it's rebooted in safe mode I would recommend getting in contact with your Local support team so they can assist you with having the phone sent in to an authorized service centre.

They will also be able to assist you with any questions that you may have regarding service times, warranty and so forth.

Keep me posted!