Android OS battery drain - Nexus 7 Q&A, Help & Troubleshooting

Hi guys, Ive been experiencing this problem since a long time now, Ive read so much threads and opinions how to fix this, but nothing really worked. So my problem is basically this: When I leave the WiFi turned on the whole time the battery drain form the Android OS process rises massively. After I turn it off and reboot the tablet, everything is fine until I turn it on again...I tried really everything - from changing the rom and android version to unistalling the preinstalled google stuff, nothing helped. Is it just me or is there someone else with this bug?
P.S. My current Android is 4.4.2 KOT49H Rooted, Baseband 1231_0.18.0_0409

I guess you could be a little more specific than "massive" here. Maybe posting some stats could help others to help you!
Sent from my Nexus 7 using Tapatalk 2

Related

[Q] Help wanted from Android Wizard!

I know this is not the right section for this, but I wanted to ask anyway since us noobs in de General Section can't figure it out, and this is the hangout spot for our android wizards!
edit: guess the thread got moved...
Problem:
A number of users have problems with some process taking up 100% CPU all the time causing massive lag and battery drain!
Using OS Monitor we have identified the process to be /init. We tried all sorts of things but nothing helps. After a reboot or hard reset the problem disappears, but comes back after a while. It would be great if some android expert could point us in the right direction!
http://forum.xda-developers.com/showthread.php?t=826507&page=3
Thanx in advance!
Thread moved to General.
bump
Can I bump? Is it allowed?
Anyway I just bumped....lol
i dont have the link you can use google to find it but there is a massive thread on this over in the offical android forums, it has been running since 2.2 came out (maybe even longer cant remember) and its not DHD specific affects lots of devices and it seems to be an issue with android itself that google needs to sort out
imo try reflashing the device with the RUU, if that fails then your out of luck cause there is no solution to it at all

[Q] Auto Reboot/Restart Issue/problem on android boot

Hi there! after googling a lot, and looking here and there around the forum's threads, i found no solution to this one....
I'm quite new at all this so i might not make myself clear enough.
I am using stock winmo HD2 Rom (the october 2010 ROM Update for EU) with 2.15 radio version.
So far have tried only Mdeejay's roms yet still i will try the rest to confirm the problem exists.
So on the first load of any of the version's i've tried (even after swapping kernels and trying different sizes of data.img file) android boots perfectly, runs amazingly smooth, fast, battery long lasting and so on (thanks to MDJ for all this), yet! i've seen many people have the same problem: After some random time (maximum of a few minutes) the phone reboots automatically thus taking you back to winmo.
It's not that i don't like winmo, it's just that i thought someone had found a solution to that.
So.... any clues?
mine is more of, turns off automatically. I thought the battery is dead (or the batt meter/notification is inaccurate) only to find out that it just turned off automatically.
have you tried checking the Q and A section rather than the Development thread???
2 solutions = Format sd card. if problem still persists than you need a custom winmo rom. I suggest elegancia. My setup in my signature runs without a hitch
iv never expierience this, i do get the coma bug, but iv heard a newer radio fixes that so im about to update mine
jose makalolot said:
have you tried checking the Q and A section rather than the Development thread???
Click to expand...
Click to collapse
Sorry, was in a rather hurry and mistakenly posed it here, please admins could you move this?
I have the same problem.
At first the reboot was performed afeter a while, from 30 to 15min, and then it quickly began to reboot after a short time, around 5min. Now, the reboot is performing during the loading process of Android.
My winmo ROM is an Energy 23699 from 24th Nov, but the problem was present while I was in Energy ROM 21xxx from October one month ago.
My Radio is 2.07.50_27.2 flashed 5months ago, no issue with it.
My Android ROM is the llast Froyo with Sense from Darkstone (17th october).
I didn't formatted my SD Card because I wanted to know if there was some boot log somewhere in order to check the problem.
I can't use Android on my HD2 I am sad..
xnnc said:
I have the same problem.
...
I can't use Android on my HD2 I am sad..
Click to expand...
Click to collapse
I am satisfyingly using android on my HD2 using a stock ROM.
I guess that the problem exists on using some of Android Kernels on some HD2s
I found my solution by using "evo carbon remix" currently using v.0.3.1 with Hastarin r8.2
I have not updated nor nothing, having a great battery life and all looking more or less the same as Mdeejay's rom.
I hope this works for you too!
@jsacp : Thank you for the advice, I will try later when I will 100% switch to android.
Well I think I have found the problem. My data.img was 256Mo and I have installed a lot of applications lately, maybe I ran over memory. I replaced the 256Mo data.img with the 1Go data.img which was present in the archive of my Android ROM, and Android didn't have reboot since then. But, of course, I lost all my setup, preferences and applications, I knew it before doing the jump, but glad to see Android back on my HD2
Hope it can help.
Did you notice if your phone feels hot at all? Last time I had a reboot I was downloading stuff with the phone plugged in and it got really hot and restarted. Was an older kernel tho and I think it happened when ppp connection got stuck.
Sent from my HTC Desire using XDA App
When I undervolt my phone too much, it starts randomly rebooting as well.
My guess is that mdeejay's undervolt is too much for your phone.
Try a ROM with hastarin's kernel, it will probably end the random reboots.
How to fix Android phone automatic rebooting problem
Recently my phone got into trouble, it kept restarting. I had to get out of the boot loop error. My phone was HTC Desire 1818 runs on Android Bravo. I was really frustrated because I had many valuable phone contacts in my phone. I searched everywhere on the, I couldn't find any solution at that time, so the only solution in front of me was to format my phone!. Oh.!.. Error fixed by formatting, but my all data on the phone including my valuable phone numbers lost. After 7 or 8 months my phone again got in to the same auto restarting trouble when I installed WhatsApp in my phone. It was really irritating me to encounter these sorts of wretched errors on Android. But at this time I found a good solution. This solution is available and applicable for all Android phones, and Tablets regardless of models and companies.
The solution is simple, Simply Switch on your Android device in 'Safe Mode'
See the Explained Tutorial on How to fix Android auto-rebooting problem going below link
mobihackman.in/2014/02/fixing-android-automatic-repeated-booting.html

Polish Rom has killed my phone !!!! :(

Hello guys, a long time ago now before the official 4.4.2 KK was available for my SM-N9005 I flashed a leaked Polish one. Before the flash my phone was working perfectly, no problems at all. After flashing the firmware I noticed my battery was draining at more than 1 percent a minute and it was pretty unhelpful to say the least, after looking at my battery info in settings says that NFC was using 63% of my battery !!! Now we all know this cannot be right ?! So I tried to disable it but couldn't as it was greyed out. It was stuck on and did not work at all. I waited quite a while and when the official KK firmware was released i flashed it but still no NFC. Now I have updated my phone to Lollipop and my NFC still does not work. Have you guys got any suggestions on how to get this working again ? It's definitely not a hardware fault as it has happened to my note and one of my family members notes after installing this firmware.
Many thanks
I have attached a screenshot that quite clearly says NFC is off although it is actually 'on' and not working. It is greyed out and cannot move it
Maybe something wrong with the nfc chip in your battery? Buy new battery (ebay) and see if that helps?
Sendt fra min SM-N915FY
Already thought of that, thanks anyway though
I've seen this happen on the S5, too. Very annoying problem, nobody seems to know if it's a software or hardware problem.
Have you tried doing a 30 seconds battery pull, and then wiping the cache in recovery? (Dalvik too, if you can.) Also clear out the cache under Settings > Storage. Let it sit for a while and see if it's off. If not, try another battery pull and see if it's off when you turn it back on. That process worked for my S5. (Which has never had any other firmware than PHN.)

Battery life problems

Hoping somebody can help me out here. I just got my OnePlus Two (Chinese version) and it is running Oxygen 2.0.2. Granted its only been the first day with the phone, but its had a wake lock the entire day now. Installed BetterBatteryStats but I admittedly don't really know how to use it to actually solve the problem. Are other people having these issues and how can I solve it? Frustrating that its stock software and already having issues.
Phone is unlocked and rooted but not rom'ed.
Androids are always awake while charging. Thats normal.

Battery Issues on this Device?

I'm having battery drain issues VERY badly currently and I'm SURE it has to do with something I installed because the life was amazing when I first got it and up until recently. I can't figure out what's causing it, so I wanted to ask if anyone knew of some good apps to work on this new 7.0 software on an un-rooted device. Please help! Thanks!
Better battery stats should do the trick.
If you are not rooted, google seatch for "xda stop wakelocks without root"
It works for me.

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