Found solution for Nexus 5 battery drain LTE modem standby issue - Nexus 5 General

I had a battery drain for a long time on my Nexus 5. Device was awesome when I bought it, but after upgrading to Lollipop I started to get strange battery drain problem which reason cannot be found easily, it's nothing in Settings->Battery on graph - no apps using battery, but it goes from 100 to 0% in about 7 hours. Even if I dont use it at all, battery discharges very fast.
I tried different ROM versions and found that battery life is soo much better on 4.4.2. I found that 4.4.2 has baseband v 1.0, and starting from 4.4.3 it was upgraded to 2.0.
So I solved it by downgrading baseband to 1.0. I found that very likely that any baseband works with any ROM, so I flashed latest 6.0.1 system, then flashed radio from 4.4.2. fastboot, unlocked bootloader. I think to make it work reliably, don't make it boot first time after flash, hold power button, and Volume down, it reboots to bootloader. Then do factory reset and reboot. In my case radio is recognised and works.
Now I have latest stock ROM and radio from 4.4.2, and battery life in standby is so much better. I tried to replace battery 2 times, but battery was actually OK. For those who have similar problem u should try it. Google made a great device, still fast and works very good, but they or Qualcomm maybe ****ed up things in modem firmware since version 2.0. Probably not everyone is affected but for me difference is huge, its like normal device with reasonable battery life, but becomes junk after software update. I will think twice before I'll buy something more from Google. Why I must to support device myself, if I found how to fix this why they still not released proper fix? Probably Google doesn't care about product quality after several months.

surely, is an experiment to try .also if , the battery drain problem I'm suffering, like many, more when the screen is on.
during screen off the battery falls but little, turned on the screen, also even if you do nothing and just read [low light, dark menu through substratum, dark backgrounds, cpu and gpu limited kernel with blue spark powersave settings, night vision in browser] decreases the battery 1 % every 2 minutes, something noted by many and to me with various Roms [octOS mm e n, purenexus 6 and 7, stock] .
this is for me the "great mystery" of this device

Related

Battery Drain on G1

Guys,I own a T Mobile G1 Android 1.6 Phone and recently I’m facing some problems. The problem that appeared recently is with the battery drain. before some days ago the battery of my G1 lasted up to 4-5 days, without using Wireless, GPS, and Bluetooth. If I used the mentioned services normally the battery lasted up to two days. But recently the battery is draining too fast. Within 4 hours the battery goes down less then 15% even I do not use any mentioned services. I keep my phone on standby, without talking a single minute with the phone, not using any service etc, and again it goes down very quick. I took some measures according to HTC instructions how to save the battery but again it does not function. I uninstalled all applications and reset the phone to factory setting by again same thing. Then I searched on the Google some instructions, I tried also that one’s but again it does not function. I always used HTC charger that came with the phone but again same problem. What is the strangest thing that after some days the battery gets back and works perfectly for two weeks, which means I use the phone normally without charging 4-5 days. As I operate very well with the smartphones, Pocket PC’s etc I start analyzing G1 and monitoring very closely why the battery goes down, I monitored for a long time the query under the :About Phone-Battery use- and I see there that Andorid OS is using the battery from 76% up to 85%. Now it came to my mind that something is keeping engaged or it keeps running the Andorid OS always on. Then I suspected that thre my be any virus on my phone, but I installed form Market Flexilis/lookout antivirus application, but there was no virus and again the battery goes very quickly down. As I said after sometime the system returns to normal and the battery lasts for 4-5 days, and when I check the information under Phone,Battery use, I see that the Andorid OS is spending only 6% of the battery. Comparing with the previous description it is a huge difference. According to my opinion there is a small problem with any file which keeps always running to much the Andorid OS. Can you please give me any instruction why Andorid OS is spending that much the battery? Or give me any instruction how to prevent this operation that keeps Android OS to much engaged? or is there any programming mistake?, is there any need for update?, do I need to root my phone as it is not rooted? The reason why I’m thinking that there is a technical problem is because sometimes the system gets back to normal and sometimes it goes out of normal running. I appreciate a lot if you could help me to resolve the mentioned problem.
I've noticed the same thing on my G1 sometimes there is fast battery drain and it seems associated with Android OS. The percentage is over 70%. I also notice it be associated with the display as well. Could be that there is some process that won't stop running and is using Android OS or it could be that on other occasions the display is not going into sleep mode properly. I wish I knew how to fix these problems but I don't. I just observe them.
The battery issue, is an up and down problem for me. Sometime I can go through it in one day or less, other days it will last me for 2 plus days.
It also could be that the battery need replacing. Who's know.
I just bought a 2nd hand G1 - works just fine. I rooted and installed CM6.1.
My battery drains within 1-2 hours. I've tried various methods of resetting stats, with no luck. How frustrating! I wonder if it's a battery hardware problem or software?
battery
I also faced bad battery life on various roms. Since I'm using COS-DS (android 2.3.3) http://forum.xda-developers.com/showthread.php?t=950765 and the Biffmod kernel http://forum.xda-developers.com/showthread.php?t=950765 the phone runs more than 24h when texting and calling. Of course you should apply the 14MB RAM hack in comination with this kernel http://forum.xda-developers.com/showthread.php?t=831139. On standby (everything off, except data and 3g) my G1 runs >48h, before it needs to be plugged in.
-
mqazimi said:
I monitored for a long time the query under the :About Phone-Battery use- and I see there that Andorid OS is using the battery from 76% up to 85%.
Click to expand...
Click to collapse
Sounds like the basic description of the USB Charging Bug.
The bug triggers if the G1 is using a kernel starting 2.6.35 and onward tree, and charged using the USB instead of AC wall charger.
A couple of option to avoid the super discharge after that (you can use either);
1. Reboot after you unplug the USB charger.
2. Change kernel to one from 2.6.34 tree
You can also visit the Dev sub-forum, there's a thread there discussing the debugging process.
It is so unpredictable for me...I have just got into the habit of a reboot after unplugging USB.
Battery drain on the G1
I have the same problem. Even on standby it drops to less than half of its battery life. Sometimes its worse. today i noticed that the battery percentage was at 84. Next thing I know the phone reboots itself and it displays that it has 1% battery, battery icon empty all in red and LED flashing in red. Then I turn it off connect it to the charger, after a couple of seconds I turn it back on and says its 90 something percent. Could be a virus or just a battery bug,that's my guess. I scanned the phone with Lookout Security and there was no Virus,malware or spyware found.
I want to try different kernels for this battery issue but want to make sure I am installing the right one.
I have CM6.1 with 2.22.23.02 radio and DangerSPL installed. Can I just load any of the kernels built for EBI0?
Specifically, can I flash the kernel in the 1st post here? http://forum.xda-developers.com/showthread.php?t=1010932
Thanks.

[Q] Weird battery issue, Razr i, after Jelly Bean

Hi all,
I have weird battery issue with my Razr i xt890 and I'd like some help. I have tried googling for information, but there's too much noise and I can't find anything suitable.
I'm asking on this site because I know the people on here are really knowledgeable.
My Razr i (with Jelly Bean) seems to have erratic battery readings. Sometimes it'll drop to 6%, and then go up to 90%, and jump around to points in between. I have even seen it drop to 1% and then go up to 6% (or something like that).
Needless to say, this makes the phone unusable because I don't know when it's on low battery so I can charge it. Furthermore, twice, it has reported low battery and then automatically shut itself down.
I hope someone can help with this, because I'm really stuck. I bought this phone overseas, and I don't really want to send it back overseas for warranty repairs.
So, some history.
Before the issue:
This is a stock Razr i, running Retail GB software. When I bought it, it was running 81.5.31002.Retail.en.GB 4.0.4. I upgraded to 81.5.39001.Retail.en.GB 4.0.4 and it's been running fine until this issue happened. I normally get about 4.5-5.5 days of battery before I recharge the phone.
This is stock software. No root. No bootloader unlock. No custom roms.
The issue:
I charged up my phone yesterday, and unplugged it from the charger at 100% battery. There was a notification that 91.2.29001.Retail.en.GB 4.1.2 was available. I selected 'Later' because I was busy at the time.
A bit later (maybe about an hour?), I went back to the phone and checked for updates, and selected to download the update. After it was downloaded, I noticed the battery was about 95%, and then I proceeded to install.
I figured 95% power should be sufficient to perform an upgrade.
The install took, maybe 10-15 minutes? At first glance, it seemed successful, but when the phone started up again, the battery reading was at 100%.
I distinctly remember thinking 'This is impossible. There's no way it could be 95% before the install, and 100% afterwards'.
I played around with the phone a bit (to try out Jelly Bean), and after a few minutes, the battery reading dropped to 60% or something.
That's when I knew something was wrong.
Since then, the phone battery reading has been erratic. If I plug it into a charger, it takes a few minutes and then shoots up to 100%. Unplug it, and it drops to a low level within minutes, and then goes up and down like a yo-yo. Twice, the phone went to a very low level, and then shut itself off.
I've tried various charging/unplugging cycles, and nothing has worked yet (Although I didn't have the patience to try an 8-hour charging cycle yet).
Please see the attached images to see what I mean.
The graphs are just bizarre.
I also did a factory reset (from the Privacy menu rather than 'recovery') but that didn't help.
At the moment, I haven't tried to root the phone or unlock the bootloader. I am still keeping the option of warranty open.
I can't think of a reason why this is happening. It doesn't seem to be a simple calibration or battery stats issue. I think the battery is working okay (because it was fine before the upgrade), just that the readings are wrong.
The phone is operating okay in all other respects. If I ignore the battery readings and the 'low battery' alerts, the phone continues to work ... except when it shuts itself down.
Another theory could be that ... because I upgraded without plugging the phone in, perhaps there was insufficient power during the upgrade and caused some corruption, and I have a faulty software/firmware? Not sure how I could test that though.
Any ideas, any one? Please?
Possibly related:
[Q] Randomly auto shutdown (battery problem)
http://forum.xda-developers.com/showthread.php?t=2195878
[Q] New phone battery jumping after JB
http://forum.xda-developers.com/showthread.php?t=2198772
MemendF Ranck
Looks like other people have a similar problem too.
Battery Fluctuation and Random Power off after JB
h t t p s:// forums.motorola.com / posts / cd3c7d3210
Jelly bean download issues
Hi, I have had exactly the same problem after downloading jelly bean. It even died when plugged in charging. As I had only had the phone for three weeks, I took it back to the shop, Phones 4 You, and they exchanged it for a new phone and told me not to download jelly bean until they let me know it's safe to do so. They said that it was a software problem. Prior to this the battery life was outstanding and I am very pleased with the phone. Phones 4 You gave me an excellent service.
Fixed!
For future readers ...
Someone on the motorola forums (see second reply on this thread) mentioned a possible solution which was to manually install the Jelly Bean version again. I decided to give this a try.
After some more research, I discovered that it should be possible to manually apply official Motorola (ie. OTA) updates using the stock bootloader (via the bootloader recovery feature). No unlocking, no root needed.
I gave this a try ... downloaded the software (keeping to the same version), placed it on an SD card, went to recovery and selected 'Updated from external card' (or something like that) and followed through ... and it has worked (Although this time I kept the phone connected to a usb cable throughout the upgrade). My battery readings are back to normal again. I didn't lose any data or apps as a result of this 'manual upgrade'.
And I am presumably still under warranty since I didn't root nor unlock the bootloader.
Other readers may consider trying this for themselves, however, I cannot guarantee that it will work for them. I can only say it worked for me.
Some references:
How to enter stock recovery in JB (razr i)
http://forum.xda-developers.com/showthread.php?p=38873652
(Apparently entering into stock recovery differs slightly between ICS and JB.)
The Unofficial Thread of Official OTA Updates
http://forum.xda-developers.com/showthread.php?t=2028814
I used the software package from the first post of this thread, labelled as 81.5.39001-91.2.29001.Retail.en.GB 4.0.4-4.1.2 (even though the filename is Blur_Version.81.5.39001.XT890.Retail.en.GB.zip).
I don't have the phone yet (supposed to get it tonight) but having read quite a bit it seems Moto suggests a factory reset after upgrading to JB in order to sort out battery drain etc. I think I saw it in the battery stats thread in RAZR i general.
I send my Razr I back to Germany (living in The Netherlands myself) yesterday! Had the same problem, only my battery get down to 0% all the time, so the phone shutsdown itself every 1 minute till 1 houre. (I'm from the topic: Auto shutdown (battery problem). I think i get my new one next week on wednesday. Dus the JB software manualy update works for more people?
mo976 said:
I don't have the phone yet (supposed to get it tonight) but having read quite a bit it seems Moto suggests a factory reset after upgrading to JB in order to sort out battery drain etc. I think I saw it in the battery stats thread in RAZR i general.
Click to expand...
Click to collapse
I think the problems described in this thread are relating to strange battery spikes in percentage and not a general drain of battery.
The problem is that everyone seems to be different. Some people report these spikes, some people are reporting high drains (which turning off google now or factory reset seem to fix) and some people (luckily me!) have had no issues at all - just an even faster phone
I did do a factory reset, though not immediately after the first JB upgrade. It didn't help.
I think describing this issue as battery drain or high battery usage is not quite correct. The battery is actually okay*, but the phone's indication of the battery capacity jumps all over the place (and sometimes causing automatic shutdown). I can see how it can be confused with battery drain though, especially if people only observe the reading going down (but didn't see the reading going up).
* At one point, I kept the phone screen on as an attempt to drain the battery. I got about 6 hours screen time (ignoring the intermittent battery low warnings) before I gave up.
Since I now have a phone with JB which is working, my guess is that this bug may not occur in all phones with JB. Instead, it seems to be triggered by something that happens during an upgrade.
OTA to JB on xt890 = battery problems
flashsam said:
I think the problems described in this thread are relating to strange battery spikes in percentage and not a general drain of battery.
The problem is that everyone seems to be different. Some people report these spikes, some people are reporting high drains (which turning off google now or factory reset seem to fix) and some people (luckily me!) have had no issues at all - just an even faster phone
Click to expand...
Click to collapse
i have the same problem. factory reset did not help me and i feel i made a mistake i have choosen this phone.i had motorola mobiles before even bought one to my wife.i know that motorola has a conservative atittude.i thought giving them a last chance now i know it was a mistake
Thanks bengtan.
I was having similar issues and a manual install of JB appears to have solved the issue.
Have you had any luck fixing your phone? I have the same problem since a few weeks ago. Bought a new battery and tried two calibration programs, but the issue persists.
Same here. I am on KK 4.4.2 and have the problem since yesterday. What to do?
Same here, my ROM is cm-11-20160524. After 3 years of usage I thought it's the battery and replaced it with a new one but the issue persists.
This is very odd, I'm here after my dad has the same issue and it looks like I'm the 4th poster to report the issue within 50 days after the thread hadn't any replies for over 3 years! Did any of you recent posters resolve the issue? I had a spare Razr-i and my dad took it to a phone repair shop where they swapped both batteries and the issue was still the same with the other battery, so it seems it's nothing to do with the battery itself for all the posters here so far.
Was there some recent update that spiralled all the phones into the erratic behaviour recently I wonder?
I'm trying to advise my dad what to do:
Try fix the issue on his current phone and keep using relatively old tech phone
Use my spare phone (same type) and keep using relatively old tech phone and try sell old XT890 for parts
Upgrade to brand new phone with latest tech and do him for a few years longer than the XT890 would.
Any feedback appreciated!
The issue flatened a bit now. After 2 weeks of brave usage the phone keeps the charge now normally with rare drops in between. So it's still not on an acceptable level but improved magically. I do not understand the physics of this behavior.
I'm having the same strange behaviour since yesterday!!
battery level drops when pluggin the charger,
after several minutes level is jumping to 100%.
whith unplugged charger, level in general inconsistent jumping up and down...!
could this be SW related? planned obsolescence?
edit: android 4.4.2. systemversion 990.43.74.XT890.Retail.en.EU
I have the same problem following an update to JB I don't even recall authorising
I'm now looking for a copy of the new firmware: 990.43.74.XT890.Retail.en.EU to try to resolve. If anyone knows where it can be found I'd be very grateful if you could point me in the right direction...
Same problem here.
I bought a new battery. No changes.
I than did a complete wipe, unlocked the bootloader and installed CyanogenMod 11 (this one http://forum.xda-developers.com/razr-i/development/rom-unofficial-cyanogenmod-11-t2966855). No changes.
I than completely drained the battery (made sure of it) and left it on the charger over night. Now I don't get those weird spikes, the battery just drains really fast (about an hour an the phone is powering off).
Maybe I try a different ROM, or go back to KitKat
I found this but I dunno how to use it ??
h t t p s : / / forum .xda-developers .com /showpost.php?p=69816145&postcount=39
android 4.4.2. systemversion 990.43.74.XT890.Retail.en.EU

[Q] Samsung Galaxy Note critical battery life after 4.1.2 update

Hello!
I know that there were a lot said about battery problems in 4.1.2 android, but i still haven't found any solution on my problem. My Note was bought with GB 2.3.6 and had an awesome battery, but after i updated it to JB 4.1.2 (via Kies), suddenly battery life is catastrophic. I have everything off (bluetooth, wi-fi, gps), my screen brightness is on minimum, i use my phone on GSM band (not 4g), i also disabled some of unused apps, etc...everything said was also my practice on previous version 2.3.6 and phone battery lasts up to 4 days, but now, it drains off in 17hrs and I barely use my phone!
If I check battery stats, it shows that screen is the major consumer of battery and it seems like it is on all the time, although the phone screen is physically off most of the time. It means something causing my phone being awake all the time instead of being off.
Any ideas how to fix this??
ajvek8558 said:
Hello!
I know that there were a lot said about battery problems in 4.1.2 android, but i still haven't found any solution on my problem. My Note was bought with GB 2.3.6 and had an awesome battery, but after i updated it to JB 4.1.2 (via Kies), suddenly battery life is catastrophic. I have everything off (bluetooth, wi-fi, gps), my screen brightness is on minimum, i use my phone on GSM band (not 4g), i also disabled some of unused apps, etc...everything said was also my practice on previous version 2.3.6 and phone battery lasts up to 4 days, but now, it drains off in 17hrs and I barely use my phone!
If I check battery stats, it shows that screen is the major consumer of battery and it seems like it is on all the time, although the phone screen is physically off most of the time. It means something causing my phone being awake all the time instead of being off.
Any ideas how to fix this??
Click to expand...
Click to collapse
4 days? really? think that is unheard of. Either how, it should last longer than 17 hours.
Try going back to factory settings, perhaps theres something running thats divided by zero :silly: .
If you feel adventurous you can also choose to root & try a custom rom. Though thats your responsibility and choice entirely.
Anthropostar said:
4 days? really? think that is unheard of. Either how, it should last longer than 17 hours.
Try going back to factory settings, perhaps theres something running thats divided by zero :silly: .
If you feel adventurous you can also choose to root & try a custom rom. Though thats your responsibility and choice entirely.
Click to expand...
Click to collapse
Yup 4 days, not kiddin...4 days of average use.
I forgot to mention that i already did the factory reset and i also wipe the cache partition in recovery menu... I disabled practically everything, and i use things when i need, nothing is set on auto, sync or anything. Last night I didn't touch the phone for about 9 hrs and battery consumption was around 1% which is ok, but it's draining everytime i turn on the screen like 5% in 10mins. BBS shows that well known GTALK_ASYNC_CONN as a battery eater. Is it possible to kill this annoying thing on un-rooted phone???

I9295 becomes very hot and huge battery drain

Hey guys
I already posted my problem in the thread related to LineageOS, but since the issue couldn't be solved I want to try it this way.
So what is my problem?
While using my phone it gets very hot. According to Powerful Monitor the CPU gets up to 65 °C and battery up to 35 °C, while under load. Besides this my battery goes down rapidly. So watching 10 minutes of YouTube sucks up 8-9 % battery. Just a plain normal video.
What is my setup?
I9295, running LineageOS 14.1-2017-06-06-UNOFFICIAL-jactivelte, OpenGApps 06-07-17 nano, only apps installed manually are GeekBench, Powerful Monitor and YouTube. Baseband is I9295XXUDOB4 (German unbranded DBT). I bought a new original Samsung battery and currently using it. So it's basically stock LineageOS.
What have I already tried?
- flashed stock firmware (all available for Germany that are unbranded). With and without erasing NAND, with different Odin versions. Last time I flashed I used Odin 3.07
- different batteries: the old ones the phone came with (bought it used), the new one I bought separately, a new one from PowerCell with higher capacity (2900 mAh)
- different phones. I have a second I9295 from a friend, that worked definitely without any issues. Same problem.
- different custom ROMs: now I'm running LineageOS, but I also tried CM13 (20161228), CM12.1, MIUI and Super WizCyan (everything from xda)
Is it possible break something ciritcal when disassembling the phone? Both phones came with broken covers for the USB port, so I opened it, but only removed the screws and the mid-frame (?) and replaced the cover. Nothing was damaged, at least I was very carefully and didn't see anything that looked suspicious.
Another very strange thing I noticed:
If I use the phone a lot (lets say 30 minutes, so almost 25 % battery!) and after that the phone is not in use for an hour or so, the battery goes up for up to 7-8 %. How it that possible?
I really have no idea what else to do.
Any help is appreciated.
dotnano said:
Hey guys
While using my phone it gets very hot.
I bought a new original Samsung battery and currently using it. So it's basically stock LineageOS.
Any help is appreciated.
Click to expand...
Click to collapse
Hey there. Well, there are tons of possible reasons why your phone acts like that. My modest opinion is that you have some sort of wakelock active in background. Install both Wakelock Detector and Gsam Battery Monitor, grant all the permissions and let it obtain data for some minutes. Than look at the results, and check if there's any Wakelock active. If instead Gsam shows an excessive consume by the kernel, try in terminal the following commands:
Code:
su
setenforce 1
setenforce 0
Then see if there's still the drain (you have to wait some minutes).
If it still doesn't work, I'd advice you to update to the latest stock firmware (doesn't matter which Country, just select a non-branded one), reinstall LOS again and verify if with nothing installed you still get the battery drain.
Anyway, IMHO it's not an hardware related problem, even messing up with the components this shouldn't happen. The only hardware fault could be the battery short-life, but 1st you said you just replaced it, 2nd it would not justify the thermal overload. Let us know
Thank you very much for your answer. I'm quite short on time next days but maybe I have a few minutes on sunday.
On the matter latest stock firmware: already tried that on monday, still too much battery drain, but I didn't install LOS till now. Maybe sunday.
But still thank you
Finally I found some time to try your suggestions
I skipped the part of trying it on the old setup, so I flashed everything new with latest stock(UDOB4-DBT, not the last one but still Android 5.0.1), then TWRP 3.1.0, after that LOS 14.1-20170606 and OpenGApps 7.1 nano from 17-06-06. Only apps I installed beside that are GSam Battery and Wakelock Detector. Root activated and granted where asked and needed.
Here I uploaded the pictures I took from GSam Battery.
So what seems strange to me:
- why is Phone Radio used at all? I don't have a SIM card inserted...?! It's on a very high level, even if the screen isn't on.
- The battery gets hot quite fast. If it's not in use, everything is fine. But as soon as I use the phone it gets hot.
- As you said: kernel usage seems quite high, tried to install "Terminal Emulator" and executed the commands - no difference.
According wakelock: where do I check that?
dotnano said:
- Why is Phone Radio used at all? I don't have a SIM card inserted...?! It's on a very high level, even if the screen isn't on.
- The battery gets hot quite fast. If it's not in use, everything is fine. But as soon as I use the phone it gets hot.
- As you said: kernel usage seems quite high, tried to install "Terminal Emulator" and executed the commands - no difference.
According wakelock: where do I check that?
Click to expand...
Click to collapse
Sorry for the delay, but if you do not quote/reply me I cannot see the message cause I'm not extremely active on XDA. Anyway...
- Phone Radio is used even without SIM, at least in TouchWiz, dunno in LOS, but it looks like so. The only way to disable it is Airplane Mode.
- It gets hot due to kernel usage, what I still do not understand is why it does so.
- Those commands where the only commands I think could be useful in this case (they set SELinux Permissive/Enforcing)
But if you say you get the Drain on TouchWiz too, the problem is serious and there's a (little?) chanche it would be HW related.
IvanCristina said:
Sorry for the delay, but if you do not quote/reply me I cannot see the message cause I'm not extremely active on XDA. Anyway...
- Phone Radio is used even without SIM, at least in TouchWiz, dunno in LOS, but it looks like so. The only way to disable it is Airplane Mode.
- It gets hot due to kernel usage, what I still do not understand is why it does so.
- Those commands where the only commands I think could be useful in this case (they set SELinux Permissive/Enforcing)
But if you say you get the Drain on TouchWiz too, the problem is serious and there's a (little?) chanche it would be HW related.
Click to expand...
Click to collapse
No need to apologise, you're doing this in your free time...
Besides that, I wasn't at home all week, so I couldn't try anything even if you had answered.
So, how do I get the kernel to calm down and stop draining my battery? I mean, I didn't install anything besides clean LOS and GApps. So what could lead to so much kernel usage? Are there any further information that could help you?
dotnano said:
Thank you very much for your answer. On the matter latest stock firmware: already tried that on monday, still too much battery drain, but I didn't install LOS till now.
Click to expand...
Click to collapse
I didn't read this post before, the points are two:
- No need to write Thanks, there's a button for it. It's free and very grateful
- If it drains even on stock it's a serious problem.
dotnano said:
So, how do I get the kernel to calm down and stop draining my battery? I mean, I didn't install anything besides clean LOS and GApps. So what could lead to so much kernel usage? Are there any further information that could help you?
Click to expand...
Click to collapse
The situation is very weird. Let's analyze.
1) TW/LOS doesn't matter. Battery drain in both
2) No apps installed which could cause wakelocks
3) Battery SHOULDN'T be the problem
4) The drain is recognised as kernel "usage", though it couldn't be real 'cause of point 1
5) Neither Permissive nor Enforcing SELinux mods helped
At this point it doesn't look so much a SW problem, but more an HW one. About:
dotnano said:
If I use the phone a lot (lets say 30 minutes, so almost 25 % battery!) and after that the phone is not in use for an hour or so, the battery goes up for up to 7-8 %. How it that possible?
Click to expand...
Click to collapse
Well, sometimes the discharge happens so fast the battery doesn't calculate the remaining capacity so well, and after some minutes the real charged cells are more than the "estimated" ones. It would explain the "goes up" of the percentage, but still not the drain.
It's very strange and very rare, but there's an infinitesimal possibility that the thermal paste went to the hell. And in this case there's not that much to do.
That's pretty pessimist though. I'd advice you to format everything, reinstall the latest stock TW and stick with it, and if it still doesn't work, try with some apps like Greenify and ForceDoze (this one works just with 6.0+) in order to at least TRY to reduce the drain.
I'm sorry I cannot help you more, if anyone has some suggestion, please let us know.
IvanCristina said:
I didn't read this post before, the points are two:
- No need to write Thanks, there's a button for it. It's free and very grateful
- If it drains even on stock it's a serious problem.
The situation is very weird. Let's analyze.
1) TW/LOS doesn't matter. Battery drain in both
2) No apps installed which could cause wakelocks
3) Battery SHOULDN'T be the problem
4) The drain is recognised as kernel "usage", though it couldn't be real 'cause of point 1
5) Neither Permissive nor Enforcing SELinux mods helped
At this point it doesn't look so much a SW problem, but more an HW one. About: Well, sometimes the discharge happens so fast the battery doesn't calculate the remaining capacity so well, and after some minutes the real charged cells are more than the "estimated" ones. It would explain the "goes up" of the percentage, but still not the drain.
It's very strange and very rare, but there's an infinitesimal possibility that the thermal paste went to the hell. And in this case there's not that much to do.
That's pretty pessimist though. I'd advice you to format everything, reinstall the latest stock TW and stick with it, and if it still doesn't work, try with some apps like Greenify and ForceDoze (this one works just with 6.0+) in order to at least TRY to reduce the drain.
I'm sorry I cannot help you more, if anyone has some suggestion, please let us know.
Click to expand...
Click to collapse
Next strange thing is, I have two S4 Active devices, both have the same problems. Am I just unlucky enough to get two broken phones?
Still, the device I got from I friend was ok the moment he gave it to me. He said battery lasted for only one day, but that would be ok. So it has to be something I did with the phone.
Youre are not alone. My Phone was/is also getting hot.
Then I did a full wipe ( format also internal memory partition!)
I'm current running cm13 (CM13 (20161228)). Batterie works now / normal ok / 1 / 2 Day s ( no great usage ). But when i telephone with someone it's getting hot in 15 min. Modem Version is I2995XXUDPB3.
dotnano said:
Next strange thing is, I have two S4 Active devices, both have the same problems. Am I just unlucky enough to get two broken phones?
Still, the device I got from I friend was ok the moment he gave it to me. He said battery lasted for only one day, but that would be ok. So it has to be something I did with the phone.
Click to expand...
Click to collapse
Have you flashed any custom ROM? Try downloading an entire stock firmware for your country / carrier from sammobile and flash through odin 3.09 and check. The S4 active generally gets hot on usage but should not get very hot. You can also try using powersave mode that limits cpu max freq and prevents heating. Battery on normal usage shoukd last for little under a day to a day with normal usage unless you are using data (otherwise set mobile networks to GSM only which saves battery and reduces heat)
JASONRR said:
Have you flashed any custom ROM? Try downloading an entire stock firmware for your country / carrier from sammobile and flash through odin 3.09 and check. The S4 active generally gets hot on usage but should not get very hot. You can also try using powersave mode that limits cpu max freq and prevents heating. Battery on normal usage shoukd last for little under a day to a day with normal usage unless you are using data (otherwise set mobile networks to GSM only which saves battery and reduces heat)
Click to expand...
Click to collapse
I have flashed the latest DBT (unbranded German) and I have the same problems. Does the version of Odin make a significant difference? I used 3.10.6.
dotnano said:
I have flashed the latest DBT (unbranded German) and I have the same problems. Does the version of Odin make a significant difference? I used 3.10.6.
Click to expand...
Click to collapse
Normally i have seen issues flashing through odin 3.10 and prefer 3.07 or 3.09. If the firmware flashed correctly and you do not have any issues then it should be fine.
CPU temp of 65% without powersave mode is fine and watching youtube videos does consume battery. Try a different charger / cable combination as that too can have issues. If the battery gets charged quickly (on stock kernel under 2 - 2.5 hours from 0 to 100) then there is definitely an issue with the charger and it will drain quickly too.
JASONRR said:
Normally i have seen issues flashing through odin 3.10 and prefer 3.07 or 3.09. If the firmware flashed correctly and you do not have any issues then it should be fine.
CPU temp of 65% without powersave mode is fine and watching youtube videos does consume battery. Try a different charger / cable combination as that too can have issues. If the battery gets charged quickly (on stock kernel under 2 - 2.5 hours from 0 to 100) then there is definitely an issue with the charger and it will drain quickly too.
Click to expand...
Click to collapse
I tried 3.10, 3.12 and 3.07 so far. Not successfully. Tried 3.09 now, we'll see.
I have a Sony Xperia Z1C as comparison, YouTube needs maybe 1% for 5 Minutes.
Cables/Chargers shouldn't be the problem. I have the original Samsung, also cable. Charged to 0 to 75 % in 90 Minutes. Same with cable and charger from Anker. So should be fine?
So no new ideas?
dotnano said:
So no new ideas?
Click to expand...
Click to collapse
I have no idea too but i have the same Trouble with mine BUT I'm still using the original Rom and didn't flash it. So maybe it is an Hardware issue.
My Battery is getting old, yes, but it is the third one. The Phone gets hotter than in its first years.
I hope you'll find a reason!
My i9295 always has been like this: 1 minute on-screen time = 1% battery loss. So this basically is a 2 hour phone... Stock or custom rom didn't matter. A friends i9505 used a lot less power, therefore I assume that the LCD (instead of the S4's AMOLED) is the problem.
Vardion said:
My i9295 always has been like this: 1 minute on-screen time = 1% battery loss. So this basically is a 2 hour phone... Stock or custom rom didn't matter. A friends i9505 used a lot less power, therefore I assume that the LCD (instead of the S4's AMOLED) is the problem.
Click to expand...
Click to collapse
Nah, why should it? There are a lot of i9295 users that don't have any problems.

Battery Issues

Hello.
I'm having trouble with the newly replaced battery on my rooted Xperia Z1 (with android 5.1.1).
2 months ago i replaced the battery because the old one overheated. The new battery has been fine untill a few days ago when it told me all day that it had 50% left. I found that weird so I didn't charge it to let it run out of battery so I could charge it to 100% and recalibrate it.
After the phone suddenly blacked out the battery wouldn't charge any more, so I took it out and messured it's voltage to be around 2.5. So I jumpstarted the battery back to 3.5 V and was able to make it charge again. Even though the battery functions like "normal", it still says 50% all the time with few exceptions which does look to be the correct battery level. The power management app disappears from settings whenever the battery shows 50% and reappears when it shows the correct level.
The battery indicator shows the correct percentage when charging, but not otherwise.
My theory is that there is something wrong with the software regarding the battery management and that it let the battery use too much of it's voltage. I've seen people with similar problems (50% battery indicator and disappearing power management), but the only solution there was to replace the battery. It doesn't seem that likely because of the software being buggy and the battery is only 2 months old.
Here's some screenshots of the weird behavior:
imgur.com/SXSMdzi
imgur.com/OcYKHjA
(Couldn't include image because I am a new user)
As I were writing this, it began discharging while hooked up to a charger. Seems to be a bit unstable.
Would appreciate all and any help
Hello!
I also got similar issues. I've read and try anything to find what happened with my Z1.
First, in my experience, some says (on internet) it's Android problem called Sudden Battery Drain Syndrome. I've tried apps like repair battery etc. and calibrator to fix it. Still the same the battery drain badly.
Second, so I am continuing my investigation on internet. I read from xperia care etc and I found that android Lolipop (5.1.1) terribly sucks for Xperia Z1. Many Z1 users confirmed this. Not just the battery problem, there are bugs also, like touchscreen, screen flickering etc.
Third, after knowing this and read like 2 hours to find the solution, I found in this forum that it's better to downgrading the android version back to KitKat or JellyBean. So I installed JellyBean firmware. Just now finished. I hope it'll be good again. I'll inform you.
NB: Factory reset also won't work
Hello, nice to get some response on this thread.
FrankBubble said:
First, in my experience, some says (on internet) it's Android problem called Sudden Battery Drain Syndrome. I've tried apps like repair battery etc. and calibrator to fix it. Still the same the battery drain badly.
Click to expand...
Click to collapse
I tried battery repairs, calibrators and so on. Did not do anything for me. After reading up on Sudden Battery Drain Syndrome, I'm inclined to say that it doesn't seem all that similar to my problem.
FrankBubble said:
Second, so I am continuing my investigation on internet. I read from xperia care etc and I found that android Lolipop (5.1.1) terribly sucks for Xperia Z1. Many Z1 users confirmed this. Not just the battery problem, there are bugs also, like touchscreen, screen flickering etc.
Click to expand...
Click to collapse
That is interesting to know. I have experienced alot of those problems. I was thinking about upgrading to a custom unofficial Android 7 for xperia z1, hearing this might be the thing that makes me do it. It's always such a hassle to download apps and set up from a new install, so I've put it off for a while.
Some days after starting this thread, I ordered a new battery. The old one started to do the same thing. Seemed like I could jumpstart it again, but I don't see the point in doing that every other day.
The new battery has been working great for almost 3 weeks now. I still have the Lolipop problems you mentioned, but the phone works as it is supposed to. It acts up from time to time, but I suspect that being because I use Greenify and CPU tuner to make the battery last longer. I might be upgrading to Android 7 and if that fails, I might downgrade.
I'm hoping I was unlucky with the last battery because it lasted so short and that the problem was only related to the battery. I will post updates here if the new battery also suffers.

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