Problems after updating xperia Z to 10.1.A.1.434

[Dodosama]

I am facing the following problems after updating my Xperia Z to 10.1.A.1.434 :

1. Battery drains very fast after the update. (Note: I am using the same settings before update).
2. STAMINA mode is not working.
3. Signal strength on the phone shows full strength while when someone trying to call you he gets out of coverage area message.

I hope SONY have solution for above issues.

Regards,

DODO sama

[Uliwooly · Accepted solution]

there are myriad threads on the same topic, please post there.