Hard battery drain.

[Irenerys]

Hello,
I have a serious problem with the new version of android kitkat.

When I bought the phone, the battery was comming to last  2 an a half days with heavy use.

Listened to music and spent many hours watching internet and taking photos. At night in the "airplane" mode the battery was down 1% or 2%.
Now with kitkat, the battery only lasts me half a day. And at night in "airplane" mode low battery almost 50%!!

Of course, I have restored the phone data after the update, but nothing change.

I am very disappointed and uncomfortable with this problem.
I bought this phone among other things, for the long battery life.

[_alexdon_]

Boot the phone in safe mode,see if it gets better:

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008

[Irenerys]

Hello,
I have done as you say.
I charged the battery to 100% and I restarted with the save mode.
I wait for a 1 hour and a half without using the phone, and here are the results. I think that the battery down a little less in save mode... but nothing like the older version of software where a 1 hour and a half with the screen off practically spend nothing.

I´m attaching some pictures, fist with freshly charged battery, and then an hour and a half later. 

The "multimedia" service will be the problem, but i don´t undertand what is this exactly, and i have alls auto-refreshing off.

Please I want to know if there is any way to return to my previous android configuration, Jelly bean.
(sorry my english, and sorry, but my telephone is in spanish)

[_alexdon_]

http://talk.sonymobile.com/t5/Xperia-Z2/How-to-manually-update-downgrade-root-2014-Xperias/m-p/59345...

Check out this topic.It is very strange,have you tried a software repair?

[Irenerys]

Yes, I tried it. Two times. It doesn´t work.

Is the official Support forum saying to try a pirate reset of my xeria?

My phone it´s the second xperia compact that  I have with the same problem. The first was returned for the same problem, because I didn´t know it was a problem of android version. The second, after several days with jelly bean perfectly working, I update it because the phone non stop asking me to do it.

That´s when the problems came back and I knew that the android version was the reason.

[Irenerys]

I forgot to say:

I tried to change an developer optiop in the "developer mode" to kill processes when you no longer use it. Greatly improves battery perfonmance, but continues to spend more than 40% overnigth in airplane mode.

[_alexdon_]

Did you also try a software repair with SUS?

You should not have changed anything in dev options.

[Irenerys]

Yes I try it.. But, I don´t know which is the difference between Pc companion and SUS. 

The result is not the same??

[_alexdon_]

The difference is that SUS is an update engine more than PC companion,which is more like a file explorer.