Battery drain on Xperia Z3 dual since Marshmallow install

[kevin1911]

I know there have been a few posts about this already, but just to add weight to them. The battery on my dual sim Xperia Z3 is draining around about 25% faster than it did before I upgraded to Marshmallow. I would usually get a day and a bit usage out of the phone, but am now getting less than a day. I have screenshots of the battery graph and the report from gsam battery monitor which shows that the screen seems to be responsible. I'll try to post these screenshots somewhere.

[0284]

I have tried software repair using xperia companion but nothing improved for battery draining please help

[PrimaryKey]

Try using the phone in safe mode if no joy

You will have to return the phone to sony for repair 

[Trfh]

Battery drain so fast in Xperia z3 android 6.0.1 marshmallow..need solution to solve this problem