topic Re: Terrible battery life stats make no sense in Tablets

Terrible battery life stats make no sense

Scalextrix — Mon, 28 Dec 2015 10:25:05 GMT

Bought my girlfriend the Z4 wifi and shecis pretty disappointed, she used the devide for 50mins this morning and the battery went from 100% to 82%. The Z4 reports 32% screen, 9% the app she was using, 3% Android. That = 52%. Whats using the other 48%?
Approx 5 hour use time is unacceptable.

Re: Terrible battery life stats make no sense

Scalextrix — Mon, 28 Dec 2015 11:57:37 GMT

Sorry my maths went a bit off track there the battery usage is 32% screen 9% on the app and 3% on android, something hidden is using 56% of the battery.

Re: Terrible battery life stats make no sense

_alexdon_ — Mon, 28 Dec 2015 12:15:51 GMT

Can you take some screenshots and post them here? You should know that from the 18%, the screen consumed 32% and so on.

Also if the device is new, you might see an improvement after using it for some time.

Re: Terrible battery life stats make no sense

Scalextrix — Mon, 28 Dec 2015 12:35:18 GMT

Why will it improve after some time? The stats are changing all the time, I noticed the screen now has a much higher percentage

Re: Terrible battery life stats make no sense

_alexdon_ — Mon, 28 Dec 2015 12:47:15 GMT

Because it has to learn your usage pattern, especially if you have stamina enabled.

Of course the screen is the biggest battery eater, just think how large the display is.

Re: Terrible battery life stats make no sense

Scalextrix — Mon, 28 Dec 2015 15:02:16 GMT

Thats the point the battery had only consumed 32% so ints not the biggest battery consumer....

Re: Terrible battery life stats make no sense

_alexdon_ — Mon, 28 Dec 2015 15:05:21 GMT

I am sorry but I don't think we understand each other here. Can you post a screenshot so we can assist better?

Re: Terrible battery life stats make no sense

Scalextrix — Mon, 28 Dec 2015 17:51:11 GMT

So as you see here the predicted life is just over 4 hours, the screen was using 56%, the app 9%, so what is eating up the other 35%.....?

Re: Terrible battery life stats make no sense

_alexdon_ — Mon, 28 Dec 2015 18:03:56 GMT

This is a little strange, however there are things that drained most of the battery and summed up it is only 65%. So 65 from 16 is screen+that game. @uliwooly any input?

Re: Terrible battery life stats make no sense

Scalextrix — Mon, 28 Dec 2015 18:14:36 GMT

Sorry cant follow your reply

Re: Terrible battery life stats make no sense

_alexdon_ — Mon, 28 Dec 2015 18:18:00 GMT

I am sorry, I mentioned of one my buddies from the forum to see if he has anything to say. I am not sure why only 65% is shown as screen + game and the rest is not there. But it is 65% from the 16% that has been drained from overall battery.

Re: Terrible battery life stats make no sense

Uliwooly — Mon, 28 Dec 2015 18:30:43 GMT

@alexdon

That's rather interesting. is that on the main account? what if you restart the phone?

Re: Terrible battery life stats make no sense

_alexdon_ — Mon, 28 Dec 2015 18:31:58 GMT

Thanks man, I also thought about restarting but not sure if that will help.

Re: Terrible battery life stats make no sense

Scalextrix — Mon, 28 Dec 2015 18:33:17 GMT

No need to apologise I just wanted to make sure I was understanding, thanks for the support so far. I tried reztarting a few times to close all aps.

As far as I know there is only onee use account, how do I check please?

Re: Terrible battery life stats make no sense

Uliwooly — Mon, 28 Dec 2015 18:38:05 GMT

@Scalextrix

there are multiple ways to do so but

settings > storage > it will tell you if you have other accounts

settings > accounts

Re: Terrible battery life stats make no sense

Scalextrix — Mon, 28 Dec 2015 19:00:33 GMT

I just see one Google account, nothing else. Latest power usage is screen 51% Cooking Fever 8% and Android 3%, so thats ony 62%...Hmmm there is a guest account, assume thats standard?

Re: Terrible battery life stats make no sense

Uliwooly — Mon, 28 Dec 2015 19:20:00 GMT

@Scalextrix

That's indeed standard, have you disabled any app or service?

settings > apps > all > scroll to the bottom

Re: Terrible battery life stats make no sense

_alexdon_ — Mon, 28 Dec 2015 19:23:23 GMT

I don't think you'll ever see 100% apps that drain, just checked on a Z5 compact that is kept on airplane mode and it only has apps that drained 98% from the total of 70% that has been drained. And on a Z5 only 90%, same as above but used as a normal device.

Re: Terrible battery life stats make no sense

Scalextrix — Tue, 29 Dec 2015 08:19:17 GMT

I uninstalled some apps and disabled some but it had no effect on the power drain. So basically we seem to be saying despite all the 17 hour battery life usage claims, with the screen on 30% brightness real world usage is about 4 to 5 hours. Thats just not acceptable in todays world. My girlfriends 5 year old ipad is way better.

Re: Terrible battery life stats make no sense

_alexdon_ — Wed, 30 Dec 2015 11:01:03 GMT

@Scalextrix Can you try something please? Download this app which seems to be recording accurately what has been draining the battery.

Problem is with android that you can't really see everything that has been draining with the stats available in settings, not a sony problem:

https://code.google.com/p/android/issues/detail?id=80131