One of two T2s fails to sleep after Lollipop upgrade

[skris88]

My partner and I have 2 x T2 Ultra Dual SIM Sony Xperias. After resisting the prompts to upgrade to Lollipop we took the plunge today. I went first, and apart from the fact it's now sluggish, everything works.

Next we did exactly the same to the 2nd T2, but the upgrade had an"NFC firmware upgrade error". We don't use NFC so that that didn't bother us.

But while my T2 goes to sleep if left unused, the other T2 does not! We've checked and changed the setting in the Display section to a different timeout but it still does not go to sleep automatically.

Both T2s were bought at the same time so the hardware would be identical.

We've tried going back to Factory Settings but that didn't resolve the issue.

Somebody please help!

Thanks,
skris88

[Phy · Accepted solution]

Boot on safe mode and check again.

How to boot on safe mode.
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008

[skris88]

In Safe Mode Sleep worked normally and we also found a Gamin app that we had not previously specifically installed, so it was removed.

It now Sleeps normally after restarting out of Safe Mode.

Thanks!