topic Re: Z3C Sudden Battery Drain while Asleep in XPERIA archive

Z3C Sudden Battery Drain while Asleep

sheax — Mon, 30 Mar 2015 17:43:23 GMT

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.

Re: Z3C Sudden Battery Drain while Asleep

Uliwooly — Mon, 30 Mar 2015 17:45:59 GMT

Could you upload the pictures at box or dropbox as I can't see them until they get approved by a moderator.

Re: Z3C Sudden Battery Drain while Asleep

sheax — Mon, 30 Mar 2015 18:06:47 GMT

Sorry yes:

[Dropbox]

Re: Z3C Sudden Battery Drain while Asleep

Uliwooly — Mon, 30 Mar 2015 18:14:57 GMT

The only issue I see is that your network coverage it's quite poor, which will drain your battery a lot faster.

Settings > about phone > status > signal strength, what do you see there?

Re: Z3C Sudden Battery Drain while Asleep

sheax — Mon, 30 Mar 2015 18:20:28 GMT

I've tried airplane mode and no change in battery drain? I've always had a really good signal. Signal strength is currently:

-89 dBm 12 asu

I am at work currently, though I think home signal is similar.

Also usually when I've checked the usage, I've never seen the purple bar before

Re: Z3C Sudden Battery Drain while Asleep

Uliwooly — Mon, 30 Mar 2015 18:24:11 GMT

even on airplane mode, it seems that you leave WiFi on at all time, that could be another issue.

Re: Z3C Sudden Battery Drain while Asleep

sheax — Mon, 30 Mar 2015 18:32:14 GMT

wifi is set to turn off when the phone is asleep, but again none of these settings have changed recently so I don't know how that's happening!!

Re: Z3C Sudden Battery Drain while Asleep

sheax — Mon, 30 Mar 2015 18:34:34 GMT

it's not currently on airplane, i just mean I've tried it to see if it affects the drain and it's the same, about 10% an hour.

Sorry I am grateful for your help, I'm just trying to be as plain as possible!!

Re: Z3C Sudden Battery Drain while Asleep

Uliwooly — Mon, 30 Mar 2015 18:40:02 GMT

This is what I would do, backup and repair the phone with PCC

PC Companion (PCC)

Bridge (for Mac)

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

Re: Z3C Sudden Battery Drain while Asleep

sheax — Mon, 30 Mar 2015 18:51:17 GMT

Thank you, I will try when I get home. I assume the repair aspect is key as there isn't much information I need to backup from the phone that I'm aware of? Should I make a back up now? I don't know how similar to computers phones are I don't want to make a backup if the issue is then going to be carried over?? I hope that makes sense I don't get inner phone workings. Xbox's & PC's are fine but phones stump me!!

Re: Z3C Sudden Battery Drain while Asleep

Thommo — Mon, 30 Mar 2015 19:05:16 GMT

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