Z5 Premium battery draining while sleeping

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Hi,

I've been loging battery performance for a while, and I've noticed that there seems to be little variance between drain while in use and drain while sleeping.

Last night my battery dropped over 50% from 100% without any [major] on screen time. The phone was totally disconnected from any radio interfaces, and everything should have been sleeping.

I do have a white list to alow my smartwatch 3 to work while the phone's asleep, but these are things like Google services.

The battery stats for the period when the battery dropped shows;

Android system 10%,
Android OS 7%
Cell Standby 3%
Screen 3%
Phone Idle 2%
Media server 1%.

I don't really code that much anymore, but if this where a system I was debugging I'd be suspicious that Android Systems and Android OS are using such a big chunk of power while the system should be asleep and waiting to be activated by the only remaining interface, the cellar connection!

Any thoughts on this [Official or otherwise?]

Barry

[MarlonUk1]

can you take a screen shot of the battery usage graph and screen?

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Hi,

Sorry if these are too big! I'm on my PC at the moment, and have uploaded them through Chrome from the Z5P that's tethered to the USB..

I've never had a phone loose so much power while I've been asleep [and it should have been asleep] with all the radio interfaces off! Like I said there is a white list to keep my watch running, which includes [Android Wear, Avast Anti theftl, Google App, Google Play Services, Google Service Framerwork]. Not sure if some of those would automatically be keept awake anyway, it was done largely through trial and error.

Android isn't a platform I've done that much coding on, but I do understand it's basic architecture. Surely the OS shouldn't be consuming that much power. It should be waiting on a listener to be triggered by an event?

The Cell Standby surely should be the only real service that's active. Google framework has nothing to do as the watch was disconected [from the Wear App], which means that Google isn't recieving or sending an messages as there's interface to send them through?

Barry

[Uliwooly]

@chris2outwright

You are aware that this is a user based forum right? you should contact Sony directly >>> Local support not through social media. 

Test both devices on safe mode and also download speed test and report back, keep in mind that the Z5 Premium has a 4K display 

[Uliwooly]

@read

We'll need more info to better assist you

charge the phone 100% use it as you normally would then once the battery reaches 10%

settings > power management > battery > take screenshots of:

1. the list

2. tap on the graph and take a screenshot

3. back > tap on the top 4 items on the list > take a screenshot of each 

post them all here or upload the screenshots to box or dropbox or google drive or etc and post the link

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No problem, but you might be interested that it only happens when an interface is enabled. Last night I charged the phone to around 97% and put it on airplane mode. These are the battery stats..

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Additionally, just as a general battery performance thing, I've just got up [ with 87% battery] at 7:14am, it's now 8:14am and my battery is at 74%! Is 10% In one hour normal, because that would.pyt my battery life expectancy at around 10 hours with all battery saving options on!

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And with less than an hour of browsing @ 8:54am, my battery's down to 63%! Is this normal?

P.S. Taptalk's using 3%