Battery Lifetime

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What steps will reproduce the problem?
1. Boot Android

What is the expected output? What do you see instead?
The device seems to lose battery power much more than WinMo. May need to check 
to make sure it putting peripherals to sleep when in idle.

Original issue reported on code.google.com by antrobu...@gmail.com on 18 May 2011 at 10:13

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Original comment by mham...@gmail.com on 19 May 2011 at 3:54

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may check the WiFi module. I think its always powered on - even if the android 
is in sleep mode. WiFi needs a lot of battery.

Original comment by sil...@gmail.com on 20 May 2011 at 11:37

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I personally doubt it is due to wifi only. Running native windows with wifi on, 
phinenstays on for inimal 1 day. Running android battery is drained in about 
3-4 hours.

Original comment by dutch...@gmail.com on 5 Jun 2011 at 6:58

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probably the keyboard LED stays ON + screen full brightness (because light 
sensor does not works)

Original comment by mham...@gmail.com on 6 Jun 2011 at 9:04

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lo stesso problema sul tastierino lo fa anche a me come si riesce ad ovviare al 
problema?

Original comment by hze...@gmail.com on 28 Jun 2011 at 6:02

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I have the same problem on battery lifetime. 

When i check the task manager, i see many apps still running even I already 
stop them. 

possible due to some apps can't really "quit", which they stay running and 
searching for network?

Original comment by oldsha...@gmail.com on 3 Jul 2011 at 4:35

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I have the same problem. About 10 hours with medium brightness and without 
WIFI. No 3G connection. I think it could be the mAh of the battery. Nobody 
thinks that the battery has poor capability?

Original comment by donfum...@gmail.com on 5 Jul 2011 at 11:14

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for wifi+3g, take the latest version r127.
try reducing screen brightness.
we hope solving the sensor issue will have a good impact on battery.

Original comment by mham...@gmail.com on 5 Jul 2011 at 11:46

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The phone also becomes hot after some minutes of action. This could also be a 
problem for the battery. I couldn't face this problem in WM

Original comment by hofa...@googlemail.com on 5 Jul 2011 at 1:23

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There is a constant drain of 250mA with display off.
Even in flightmode (no radios).
This has nothing todo with the sensors (light, proxy etc)
Its not the battery that gets warm. Its something in the lower part of the 
phone.

Original comment by codiak@gmail.com on 5 Jul 2011 at 5:52

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thanks codiak, it helps!
i think once we fix sensors it will be better

Original comment by mham...@gmail.com on 5 Jul 2011 at 7:59

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same here
even if the android is in sleep mode. 3G / Wifi consumes lots of battery.

Original comment by peggi....@gmail.com on 8 Jul 2011 at 12:02

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phone battery very very fast empty, but after release of 5-7-2011 it drains 
faster. And even now woth the sensors fixxed i think even faster then before

Original comment by superz...@gmail.com on 8 Jul 2011 at 5:22

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its same here, batter drains very fast, with WIFI, 3G and event with low 
resulaton, please help... 

Original comment by muzammil...@gmail.com on 9 Jul 2011 at 9:35

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Hi all,
just an idea from me..

May it be related to the fact that "anything" related to Android is stored into 
SD and hence Photon must read the SD all the time..?

That may explain even the warm in lower back side of the phone.

Original comment by orlando.ferrara@gmail.com on 10 Jul 2011 at 8:50

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hi orlando,
yes i'm sure you are right:)
HD2 users experienced the same problem as i remember,the battery was dead in 1 
day or less..:(

Original comment by zoriciiu...@gmail.com on 10 Jul 2011 at 9:07

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I did a really simple test: I run Android for some minutes and then removed the 
back cover.
I realized that the warmest part is the metal support which covers the SD.

Original comment by orlando.ferrara@gmail.com on 11 Jul 2011 at 2:49

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Dear Orlando and terenteyo,
this issue is NOT related to the pure fact we are using a SD build.
I use a SD build on my HD2 and I have a standby consumtion of 7mA.
HD Mini uses up to 250mA even in flight mode (all radios off)

Original comment by codiak@gmail.com on 12 Jul 2011 at 8:55

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My battery is draining at about 2% a minute with everything (radios too) turned 
on. Normal use renders the device useless about 4 hours after a full charge. 
250ma is really not good, clearly something needs to be tweaked. Whatever it is 
I think it's safe to say that it is either a radio or a processor due to the 
heat dissipation one can feel through the phone or as said earlier on the metal 
part covering the SD card. Note, the SD is not getting hot, just the metal 
(better conductor of heat)... Sensors show the battery at about 40 degrees C, 
so whatever it is, its reaching the battery too.

Just my 2 cents :D

Original comment by xteao...@gmail.com on 13 Jul 2011 at 1:09

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@codiak..wow that sucks:( 
can u tell me pls what program did u use to check this?

Original comment by zoriciiu...@gmail.com on 13 Jul 2011 at 5:33

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If you meant to have that @xteaopia I can telll you i used "battery mix" 
available free on the android market, oh and I've hit higher temps in the past 
after using resource intensive application.... nothing crashed though which is 
always nice :)
I'd like to see this go back up to high priority as the entire android port is 
rendered useless for everyday use when I barely get 4 hours worth of battery 
norma use...

Original comment by xteao...@gmail.com on 13 Jul 2011 at 10:59

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I totally agree with the priority increase...

Original comment by orlando.ferrara@gmail.com on 14 Jul 2011 at 8:02

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... me too!

Original comment by reto.hu...@gmail.com on 14 Jul 2011 at 8:22

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I use Battery Monitor Widget. You can get it for free on the market: 
https://market.android.com/details?id=ccc71.bmw&feature=search_result

Original comment by codiak@gmail.com on 14 Jul 2011 at 5:51

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after using Battery Monitor,what did u noticed,  did u find some improvement ?

Original comment by muzammil...@gmail.com on 14 Jul 2011 at 9:31

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oh so is for Android...i thought it's for WM.i wanted to check how much is 
using while on WM..

Original comment by zoriciiu...@gmail.com on 15 Jul 2011 at 1:11

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I have the same problems. My cell phone will be very warm and the battery is 
very fast empty, if I work (f.e.: read my mails, internet, try apps and so on) 
with this device. 

Question: Is it possible to store the Andriod system on the internal stored, 
dretly on the phone?

Original comment by jes...@gmail.com on 16 Jul 2011 at 9:25

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@All: This is not a chat nor a forum.
If you have questions, please have a look at the XDA Forum.
(You find the link on the Frontpage)

This is only for bugtracking!

Thank you

Original comment by codiak@gmail.com on 18 Jul 2011 at 11:50

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schlund is working on it, we have good hope it will be fixed soon: 
be patient!

Original comment by mham...@gmail.com on 18 Jul 2011 at 1:51

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from installing [BETATEST]Kitchen Build: Android full release 10.07.2011 
(r134++)the batery is quite good and not to warm or hot but the problem is 
detecting charger..... after i update with munjeni sfdf file... my hd mini 
become hot and fast draining of the batery.. but the good thing is it detect 
charger very well..

Original comment by aswada...@gmail.com on 18 Jul 2011 at 3:07

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its almost done so far, latest test result is 12 hours in average use(phone, 
messages, internet) with a drain from 100% to 60%..with perfect working 
usb/charger detection and no more heating effect!

Original comment by b.baerth...@gmail.com on 18 Jul 2011 at 7:48

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I think that android doesn't support speed-step technology and HTC use full CPU 
power and in result battery liftime is reduced.

Original comment by bartosz....@gmail.com on 20 Jul 2011 at 11:14

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Wrong! You can scale frequencies and undervolt the cpu. Its all up to the 
kernel ;)
Beside that, I dont think the cpu is the batt-honker. Must be some other 
devices, but perhaps schlund will enlight us? ;)

Original comment by codiak@gmail.com on 21 Jul 2011 at 1:05

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i have the same issue.

Original comment by abdullah.elgendy on 22 Jul 2011 at 1:42

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I have the same issue and i think its about Wi-Fi. My photon has a lot heat on 
the back side and battery drains in about 3 hours. It looks like wi-fi has 
stopped but i think its not completely..

Original comment by cyetis...@gmail.com on 3 Aug 2011 at 9:20

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I saw also problem with charge battery on Android. If Android is running the 
charging battery doesn't works end freezes phone. Sometime I saw also problems 
with calls, when call was end also freez phone and only replace battery help. 
Few times my phone was freez with blank screen.
Another event, for me strange.. was when i use telephone in supermarket where i 
can't get signal gsm but when reset phone to Windows Mobile signal was very 
strong.

Original comment by bartosz....@gmail.com on 4 Aug 2011 at 1:25

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enhancements in r167
please check and report if problem is still here.

Original comment by mham...@gmail.com on 23 Aug 2011 at 7:01

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I get the same issue.
I noticed that the lights of the buttons keep burning all the time, even when 
the screens switches off/standby. The heat production in my HD mini seems to be 
also there, indicating significant power consumption. Could this be related? 
I did not yet try r167

Original comment by vankan.p...@gmail.com on 24 Aug 2011 at 8:21

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Hello,
I have had with the previous version ("10.07.2011_r134++") greater durability 
of the battery (about 24 hours), but with this new version, the battery has run 
down to me in about 6 hours (only in standby!).
I admit, the previous version did not have a very accurate indicator of the 
battery, but at least made ​​the battery last longer.

Original comment by vidr...@gmail.com on 24 Aug 2011 at 9:46

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thanks for reporting!

Original comment by mham...@gmail.com on 24 Aug 2011 at 10:02

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Thanks v. much for this release, it fixes many things but the battery life does 
not seem as good.  I have done 2 full cycles, both got about 8 hours, usage was 
light, mainly on standby, no calls but a couple of SMS.

Original comment by riley...@gmail.com on 24 Aug 2011 at 7:44

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fix is coming soon !
http://forum.xda-developers.com/showpost.php?p=16949140&postcount=44

Original comment by b.baerth...@gmail.com on 24 Aug 2011 at 7:51

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fixed in r169

Original comment by mham...@gmail.com on 27 Aug 2011 at 12:53

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