Hello,
I'm new user of this forum.
In my family I have sony Xperia Z, Z2 and Z5, and at leas i decided of bought sony xperia Z5 premium Dual, because i travel a lot.
I bought the sony Z5 premium in the middle of April. Until now i tried many solution there are written on this forum for try to solve the problem of this battery drain.
I reset on factory data 3 times, i used too the sony companion for restore the firmware inside, i deactivated all the application default sony, but nothing to do still the battery drain.
I changed my old smartphone with this because i need to have more autonomy battery. But until now i cannot use for more then 5/6 hours, using mobile, with and without stamina there is only any hours plus.
I want to ask, if is possible make the downgrade firmware from 7.0 to 6.0. if is possible can i have same explanation how to do?
Best Regards,
FrA_947
