Battery drain - source found

S

steinrr

Member

Aug 17, 2011

5

0

• Sep 28, 2011

• #1

I have had problems with battery drain on my S2 from the day I bought it. The battery would last apprx 12-14 hours before going dead - almost without use.

I then removed an Exchange (ActiveSync) mail account. And the problem was gone. 30+ hours battery with no problems. I added the mail account back, and the problem reoccured. I testet this some more times and it was consistent each time. BTW I was not using push, just manual mail update.

The mail account that I am adding forces encryption on the phone, so it might be that this is the actual source of the battery drain. But it shows that the phone is useless using ActiveSync with encryption.

I was hoping that this was fixed in 2.3.4, but the problem was the same there as well. Until this is fixed (which I don't suspect will happen) I can not use the phone with my job email account because of this.

 

nikzDHD

Senior Member

Apr 2, 2011

4,547

1,207

London

• Sep 28, 2011

• #2

Yes you can go to themes and apps section and search for the administration removed email app, stock app with the corporate control removed try it and see if that works better, currently using it myself and no big battery drains.

Sent from my GT-I9100 using XDA App

 

S

steinrr

Member

Aug 17, 2011

5

0

• Sep 28, 2011

• #3

"go to themes and apps section and search for the administration removed email app, stock app with the corporate control removed"

Where is this? Android Market? I did not find it...

 

jr866gooner

Senior Member

Jun 24, 2011

1,196

300

Suffolk

• Sep 28, 2011

• #4

Themes and apps section of this s2 forum

 

anisbombaywala

Senior Member

Aug 22, 2011

153

26

Mumbai

• Sep 28, 2011

• #5

Using 'Push' uses a lot of battery. See if you can manage with 'Manual' or scheduled to check every few minutes.

Also disable 'Auto-sync' if not required.

Log out of Latitude from within Maps.

 

S

steinrr

Member

Aug 17, 2011

5

0

• Sep 28, 2011

• #6

anisbombaywala said:

Using 'Push' uses a lot of battery. See if you can manage with 'Manual' or scheduled to check every few minutes.

Also disable 'Auto-sync' if not required.

Log out of Latitude from within Maps.

Click to expand...

Click to collapse

As I said in my initial post - I do not use push - I have everything on manual. It drains battery even if I do not check the mail once.

 

S

steinrr

Member

Aug 17, 2011

5

0

• Sep 28, 2011

• #7

jr866gooner: I found it, but I guess this forces rooting of the phone? It is a phone owned by my employeer, so this is unfortunately not an option :-(

 

nikzDHD

Senior Member

Apr 2, 2011

4,547

1,207

London

• Sep 28, 2011

• #8

steinrr said:

jr866gooner: I found it, but I guess this forces rooting of the phone? It is a phone owned by my employeer, so this is unfortunately not an option :-(

Click to expand...

Click to collapse

You can unroot upon return just use a insecure kernel which will bypass superuser I think.

Sent from my GT-I9100 using XDA App

 

G

gschot

Senior Member

Jan 20, 2009

184

24

Samsung Gear 2

Samsung Gear S2

• Sep 28, 2011

• #9

I also pinned down my huge battery drain (10% per hour) to the Exchange email connection I use. I have tried various stock ROMs and some custom ones, but all seem to give the same result. I must say that older ROMs did not seem to have the drain this much. I am currently running Cognition 1.5.1.

Currently I work around the drain by manually syncing my email whenever I want to read email and this results in a whole lot less battery consumption (I now have 50-70% battery left with moderate use, instead of only barely managing 8 hours or so.

I have installed the modified Email.apk to see if this fixes some issues. The email.apk in Cognition did not have a .odex file anymore and was a few bytes different in size, so I really really hope that this fixes the drain. I'll keep you posted.

Gerco

 

D

Deleted member 308374

Guest

• Sep 28, 2011

• #10

Would someone please be so kind to link the thread with the modified apk? Forum search through tapatalk is not always an easy task
Thanks a lot guys

Inviato dal mio GT-I9100

 

G

gschot

Senior Member

Jan 20, 2009

184

24

Samsung Gear 2

Samsung Gear S2

• Sep 28, 2011

• #11

I wasn't sure either, but I used the info in this link:

http://xdaforums.com/showthread.php?t=1117452&referrerid=1505433

 

nikzDHD

Senior Member

Apr 2, 2011

4,547

1,207

London

• Sep 28, 2011

• #12

gschot said:

I wasn't sure either, but I used the info in this link:

http://xdaforums.com/showthread.php?t=1117452&referrerid=1505433

Click to expand...

Click to collapse

Its not this one, similar thing the other one uses a different method, will try to find the link for you all.

Sent from my GT-I9100 using XDA App

 

A

aeonstorm

Senior Member

Jan 1, 2011

381

10

• Sep 28, 2011

• #13

hey how about if i use another email app? will that bypass the problem?

 

nikzDHD

Senior Member

Apr 2, 2011

4,547

1,207

London

• Sep 28, 2011

• #14

aeonstorm said:

hey how about if i use another email app? will that bypass the problem?

Click to expand...

Click to collapse

You can try the stock asop one from dark knight thread, think check fixed the wakelock issues, very similar to the Samsung version minus a number of features but based on the same source.

Sent from my GT-I9100 using XDA App

 

patpeewee

Senior Member

Dec 6, 2010

62

16

Den Haag

Samsung Galaxy S10+

• Sep 28, 2011

• #15

I guess you guys mean this link?

With kind regards,

patpeewee

 

G

gschot

Senior Member

Jan 20, 2009

184

24

Samsung Gear 2

Samsung Gear S2

• Sep 28, 2011

• #16

My test results with the email.apk I had found did not really show improvement of battery usage, so I am very curious for the link that nikzDHD means. Is this the one patpeewee mentions? I did not see any remarks about wake lock issues in the op.

 

Last edited: Sep 28, 2011