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Z3C Sudden Battery Drain while Asleep

sheax
Visitor

Z3C Sudden Battery Drain while Asleep

Hi there! I understand other people are having a similar issue but none of the fixes I've seen work for me. 

About a week ago my Z3C battery started to drain super fast, like I'm getting maybe 10 hours with all power saving features on while asleep. I factory reset the phone but the problem persists. When I first got the phone I disabled nearly all the stock apps, save walkman & chrome and a couple others. No google accounts or other sony default apps. I hadn't changed any settings when the battery started to drain. I was getting 3 days out of it initially even when listening to music on walkman overnight. My brighness is always on the lowest setting, wifi off when phone asleep and never searching, location services from what i can tell always off, I don't have any apps auto syncing & 4G us usally off when not out in remote areas.

The only thing I'm seeing different is that cell standby & walkman are taking up 25-40% of the battery now, and I don't remember any app being that high before?? Using 4.4.4, not rooted

I love this phone and I really just want to sort this out, if anyone has any advice I would greatly appreciate it. 4 screens attached, let me know if you need screenshots from any other areas.

Power Management Usage

usage2 History

10 REPLIES 10
Thommo
Genius

Performing a system repair using PC Companion

Switch off your phone and unplug from Pc (Hold volume up and power for around 10 seconds)
Start PC Companion and select Support zone then Update my phone/tablet then in Blue Repair my phone/tablet and follow the on screen instructions - When prompted connect your phone still switched off holding volume down or back button - This should start the repair or reformat process

If you are using Windows 8/8.1 or a 64bit operating system then adjust the settings for PC Companion and run in compatibility mode and chose Windows 7 or XP