After yesterday's update ((7/10/2015) perhaps up to Android 5.1.1 ver. (or may be a new ver. of Sony 23.4.A.1.200) or just smt. that updates yestday on 47 mb.) my phone's battery is draining very fast, from 100 to almost 2% in around 3 hours. I have been using my phone only for few calls and texting. I am not sure whether is was caused by Android update of firmware update. Can it be fixed?
I know this may sound simple but have you tried powering off the handset and fully charging it and then powering it back on to see if the same issue occurs?
Hi there. Same thing happened to me. Fine before update, but now my battery doesn't last one day even if I don't use the phone. It is definitely a software problem.
