Hi! I confirm to have the same problems with my phone, namely:
- Spontaneous reboot (even when simply navigating on the home screen)
- Unexpected drop of battery level after these reboots (e.g. from 70% to 30%)
- Screen slows and/or freezes, which sometimes leads to reboot, but are not the only cause
- Screen becomes black and if I press the power button, it reacts with a delay of up to 10 seconds (if it reacts at all, sometimes it does not react or reboots)
I noticed that theses reboots occurs mainly (unfortunately far from exclusively) when:
- I use the Facebook app
- The phone is heavily used (e.g. music app and another app)
- When the system tends to slow/freeze
- When the screen turns black
Here is what I attempted to solve the problem
- Uninstall the Facebook app: this reduced the number of reboot, but the problem still occurs
- Reset the battery according to this guide: this reduced the battery drop to a “more acceptable” range of about 10% to 15%
-
Reseting the phone to factory defaultsPerforming an hard reset and installing as few apps as possible: this reduced the number of reboot during a few days, and then the old behaviours started again - Changing the SIM card: here again this reduced the number of reboot during a few days, and then the old behaviours started again
Some further information that might help:
- I already had my first battery changed about one year ago because it swelled and the new one seems fine
- I noticed that the music quite often freeze when I turn off the screen, whereas it works well when the screen is turned on (I noticed that with the native as well as with the Poweramp apps)
- My power button seems to work
