|
Good day,
I have problem with my Umi Z after update to Android 7.
With Android 6 everything work OK.
I have this problems in Android 7 (in Android 6 it work):
- System do not read sd cards (I try 3 cards)
- System about 3/5 times go to the recovery after press only power button not to the system
- Original recovery say NO COMMAND
- The phone is often jammed and restart
- I have problem with wake up the screen - every time
- The phone itself turns off the screen
- Sometimes I do not click to anything and do not turn off screen
- When I turn off wifi, mobile data do not work or I must restart phone with wifi off and work
- I have Do Not disturb mode, when I call
- It is not possible to do anything with this update for me :/
I do this:
1) I use official OTA update with update in settings and it did not work right (same problems).
after this go back with SPFT and with Android 6 work everything OK
2) I use official OTA update from ZIP and same problems
back to Android 6
3) I use SPFT for firmware upgrade to Android 7 with official recovery and same problems
back to Android 6
4) I use SPFT for Android 7 with TWRP and same problems
back to Android 6 and everything work OK
I bought this device, because I want phone with Android 7, I wait so long and this not work for me!
This phone may be a faulty piece. Can I put on claim this device? I have a one-year phone guarantee in Germany.
Thank you. |
|