[Q&A] Battery Drain - Huawei P9 Questions & Answers

Hi, I've a problem with my P9. The battery drains a lot, even in standby. Can you help me?

I got the same problem and it is heating at times

Devil Trigger said:
Hi, I've a problem with my P9. The battery drains a lot, even in standby. Can you help me?
Click to expand...
Click to collapse
You should give your screen on time.

blue_moon said:
You should give your screen on time.
Click to expand...
Click to collapse
My SOT is something between 3 and 5 hours, it depends on the standby drain. The problem is that if i leave my phone for 2 - 3 hours i lose about 20%

Not easy to see from only that picture. Enter android entry and see what cpu time is and so on, also show hardware usage
If it's not a fresh install I would recommend clearing cache on the phone from the recovery if possible. Usually helps

denNorske said:
Not easy to see from only that picture. Enter android entry and see what cpu time is and so on, also show hardware usage
If it's not a fresh install I would recommend clearing cache on the phone from the recovery if possible. Usually helps
Click to expand...
Click to collapse
It's the same software from the beginning (last update btw).
Now I have 33 min of SOT

Devil Trigger said:
It's the same software from the beginning (last update btw).
Now I have 33 min of SOT
Click to expand...
Click to collapse
Its normal. You have a poor signal.

Related

[Q] battery drain

I have a gt-n7000 and am curious as to what others are experiencing with there notes, with wireless on and sync, and brightness turned all way down, I'm getting a 10% drain per hour. this is of course while on it the full hour. is this normal am on rr-romjb-v2, now v3 and same.. can I hear from others as to there experiences.. thanks.
did you move on to RR from a full wipe ? if not i would suggest to do so.
also, download better battery stats from the market, this will inform you of which apps are causing wakelocks and draining battery unnecessarily
dalephill2 said:
I have a gt-n7000 and am curious as to what others are experiencing with there notes, with wireless on and sync, and brightness turned all way down, I'm getting a 10% drain per hour. this is of course while on it the full hour. is this normal am on rr-romjb-v2, now v3 and same.. can I hear from others as to there experiences.. thanks.
Click to expand...
Click to collapse
You can find Betterbatterystats & its information here & the guide here :good:
what can I expect
dalephill2 said:
I have a gt-n7000 and am curious as to what others are experiencing with there notes, with wireless on and sync, and brightness turned all way down, I'm getting a 10% drain per hour. this is of course while on it the full hour. is this normal am on rr-romjb-v2, now v3 and same.. can I hear from others as to there experiences.. thanks.
Click to expand...
Click to collapse
What is a respectful drain from the Note n7000 if 10% an hour is alot.??? thanks
dalephill2 said:
What is a respectful drain from the Note n7000 if 10% an hour is alot.??? thanks
Click to expand...
Click to collapse
It depends on your usage
With wifi and sync on, I lose about 1% per hour in deep sleep
And with moderate usage(texting and calls), I lose about 5 to 8%
And a screen on time of 3.30 to 4.30 hours
with screen and WiFi on .. 10 percent is pretty much standard drain.. it will increase if you turn on the sync...
on GB I could use my phone continuously for 5.5 hours.. on leak jb it's 3.5 to 4 hours
read the stickies. Check ahalfords post, go analyse with that
http://forum.xda-developers.com/showthread.php?t=1878828
Sent from my GT-N7000 using Tapatalk 2
Use cpuspy
Thanks for the replies
Wish to thank all that replied, I had went back and started from scratch after wiping the hydracore7 and went back to hydracore4.5 and it seemed to be better as far as batt life, not sure how that works.. but yeah 10% seems to be the brick in the window average. With wifi on and low bright setting, maybe 9percent with sync on as well. thanks guys... looking forward to the official jell.
dalephill2 said:
Wish to thank all that replied, I had went back and started from scratch after wiping the hydracore7 and went back to hydracore4.5 and it seemed to be better as far as batt life, not sure how that works.. but yeah 10% seems to be the brick in the window average. With wifi on and low bright setting, maybe 9percent with sync on as well. thanks guys... looking forward to the official jell.
Click to expand...
Click to collapse
here here
Sent from my GT-N7000 using Tapatalk 2

Battery drain no matter what i do

Even without sim card, the battery still drains, drained 10% every 5 hours. ( even wifi is off it still drains)
According to BetterBatterystats, the highest wakelock count in partial wakelock before is *backup*, (removed after disabling google backup)
The most wakelock right now is SuperStamina Xssm, it can be stopped after disabling Stamina mode, but even i did , this battery still drains.
any way to solve this? airplane mode also drains battery, basically nothing works from stopping battery drain.
in your screenshot you use wifi right?
Try to switch to GSM only (2G) in network settings and see if there's any difference.
Jaycel0820 said:
in your screenshot you use wifi right?
Click to expand...
Click to collapse
wifi and non wifi is the same, battery drain still occurs
amatiramisu said:
Try to switch to GSM only (2G) in network settings and see if there's any difference.
Click to expand...
Click to collapse
already using gsm since from the start
Jambu95 said:
Even without sim card, the battery still drains, drained 10% every 5 hours. ( even wifi is off it still drains)
According to BetterBatterystats, the highest wakelock count in partial wakelock before is *backup*, (removed after disabling google backup)
The most wakelock right now is SuperStamina Xssm, it can be stopped after disabling Stamina mode, but even i did , this battery still drains.
any way to solve this? airplane mode also drains battery, basically nothing works from stopping battery drain.
Click to expand...
Click to collapse
why dont u try app like quadcore sleeper. im using that app n im seeing more decent battery drain. before i use the app if i left it overnight it can drain 12% on nothing, after that app only 3-5% is lost.
pavapizza said:
why dont u try app like quadcore sleeper. im using that app n im seeing more decent battery drain. before i use the app if i left it overnight it can drain 12% on nothing, after that app only 3-5% is lost.
Click to expand...
Click to collapse
tried, didn't work
hi, can you post your battery usage screenshot and current running app screenshot?
updated to the lastest .245 firmware, lost root, still no improvement, the wakelock (SuperStamina-Xssm) and battery drain still alot, the battery drained from 100 to 54% in 23 hours 40 minutes, without using the phone at all, any solutions?
Help please, it's already half a year i had this problem, and why no people or any helper on this forums wants to help me out? :crying:
Jambu95 said:
Help please, it's already half a year i had this problem, and why no people or any helper on this forums wants to help me out? :crying:
Click to expand...
Click to collapse
How little do you expect the battery to drain? What are the current wakelocks right now? Are they still the same?
Can you use Wakelock Detector instead? The Xperia SP's battery might not be as great as you think....
Let's just calm down, and of course, help can never be demanded. Maybe your phone has a hardware problem that none of us can solve.
Catching my breath, letting it go, turning my cheek for the sake of the show
CallMeVentus said:
How little do you expect the battery to drain? What are the current wakelocks right now? Are they still the same?
Can you use Wakelock Detector instead? The Xperia SP's battery might not be as great as you think....
Let's just calm down, and of course, help can never be demanded. Maybe your phone has a hardware problem that none of us can solve.
Catching my breath, letting it go, turning my cheek for the sake of the show
Click to expand...
Click to collapse
superstamina xssm, flashed many custom stock roms, this wakelock is always there
Jambu95 said:
superstamina xssm, flashed many custom stock roms, this wakelock is always there
Click to expand...
Click to collapse
The only way I can think of is deleting the .apks related to wakelock
Catching my breath, letting it go, turning my cheek for the sake of the show
Jambu95 said:
Help please, it's already half a year i had this problem, and why no people or any helper on this forums wants to help me out? :crying:
Click to expand...
Click to collapse
Why wait so long?
Take your phone to a sony service center(or where ever you bought the phone) and let them have a look at it, might be that your battery is just not working properly. They will replace if it for you.
Robin>Hood said:
Why wait so long?
Take your phone to a sony service center(or where ever you bought the phone) and let them have a look at it, might be that your battery is just not working properly. They will replace if it for you.
Click to expand...
Click to collapse
they said it's normal for a phone without sim card to standby 2 days without using it
i personally think is software problem, i tried drain the battery down to 0%, then charge it full without break,
after that, the battery drain is just godly, after 2 days left 98%, but then the battery suddenly started to drain like hell,
after 5 hours it became 94%, then it keep draining down as usual.
CallMeVentus said:
The only way I can think of is deleting the .apks related to wakelock
Catching my breath, letting it go, turning my cheek for the sake of the show
Click to expand...
Click to collapse
not sure which apk is the culprit, but my friend has the exact same model and same colour, dont have this problem,
i personally think is software problem, i tried drain the battery down to 0%, then charge it full without break,
after that, the battery drain is just godly, after 2 days left 98%, but then the battery suddenly started to drain like hell,
after 5 hours it became 94%, then it keep draining down as usual.
not sure if backing up ta and flash cm is the last resort, i'll go with aokp but there's no official built for sp yet.
Jambu95 said:
Even without sim card, the battery still drains, drained 10% every 5 hours. ( even wifi is off it still drains)
According to BetterBatterystats, the highest wakelock count in partial wakelock before is *backup*, (removed after disabling google backup)
The most wakelock right now is SuperStamina Xssm, it can be stopped after disabling Stamina mode, but even i did , this battery still drains.
any way to solve this? airplane mode also drains battery, basically nothing works from stopping battery drain.
Click to expand...
Click to collapse
If all the app draining apps are closed and alsoare bluetooth screen brightness and wifi.
The problem may be deeper.
Your kernel may have flipped and its draining this much battery i am not sure how to check it but i would not suggest you to flash a new kernel right away just because i think thats the problem.
jackaros said:
If all the app draining apps are closed and alsoare bluetooth screen brightness and wifi.
The problem may be deeper.
Your kernel may have flipped and its draining this much battery i am not sure how to check it but i would not suggest you to flash a new kernel right away just because i think thats the problem.
Click to expand...
Click to collapse
i flashed countless custom rom , the kernel is stock on lb, if need to have a custom kernel i will have to unlock bl, will see how it fare for later days
jackaros said:
If all the app draining apps are closed and alsoare bluetooth screen brightness and wifi.
The problem may be deeper.
Click to expand...
Click to collapse
for your information, see this graph, 2 days with good standby, and then went from 95% to 35% in less than 20 hours
this problem is occuring with stamina mode on or off, nothing works
edited: reflashed another stock kernel, will see how it works
Jambu95 said:
for your information, see this graph, 2 days with good standby, and then went from 95% to 35% in less than 20 hours
this problem is occuring with stamina mode on or off, nothing works
edited: reflashed another stock kernel, will see how it works
Click to expand...
Click to collapse
I would flash a custom kernel then if the stock wont work.

[Q] Battery or soft problem

I don't know how to explain this... Hope you'll understand me. So my phone was full charged so i put out the charger and i go to school. After 6 hours i came back and my battery was at 50%. I was surprised but when i tried to call someone my phone died. So when i starded battery was at 3%. Same thing today, i put out my phone from charger after 2 hours i tried to do 2 photos and *bam* died - 3% battery.
There is a screenshot so you can see what i mean. Can you tell me what is the problem? Hope you understand me
wow, that's a HUGE drain. I recommend installing a wakelock detector to see what is causing that huge drain on your phone
This is how you would go about using the app to find the issue.
1) Install the app from google play "Wakelock Detector-Save Battery"
2) Open it
3) Once it opens, reboot your phone
4) Once it reboots, leave it for 5 mins
5) Unlock your phone and open the wakelock detector
6) Check the bar at the top to see if your phone was asleep and how long it was asleep for (should be around 4 mins)
If it is 4 mins or above, then your phone should not be having battery drain, ensure you are swiping away apps after use.
If your phone was awake the whole time, then you will be able to see what is causing this and you should uninstall this app
Also, you should enable the power saving option to maximise battery life.
Make sure you charge the phone while its turned off, apps can interfere with the charging process while the phone is one, this could also be the cause of your drain, so turn off and then charge.
stefan.xd15 said:
I don't know how to explain this... Hope you'll understand me. So my phone was full charged so i put out the charger and i go to school. After 6 hours i came back and my battery was at 50%. I was surprised but when i tried to call someone my phone died. So when i starded battery was at 3%. Same thing today, i put out my phone from charger after 2 hours i tried to do 2 photos and *bam* died - 3% battery.
There is a screenshot so you can see what i mean. Can you tell me what is the problem? Hope you understand me
Click to expand...
Click to collapse
What rom? When it start to happen? Did you some weird thing or install some weird stuff before start happening? Have you tried other battery? It's a new or a used phone? Have you seen some porno before start happen? Are you a girl?
mauam said:
What rom? When it start to happen? Did you some weird thing or install some weird stuff before start happening? Have you tried other battery? It's a new or a used phone? Have you seen some porno before start happen? Are you a girl?
Click to expand...
Click to collapse
Is 4.1.2 stock. It start about a week ago. I have normal stuff like Whatsapp Facebook Angry Birds. No i didn't tried other battery. I have this phone since last year - november and it was new. No WTF. No.
stefan.xd15 said:
Is 4.1.2 stock. It start about a week ago. I have normal stuff like Whatsapp Facebook Angry Birds. No i didn't tried other battery. I have this phone since last year - november and it was new. No WTF. No.
Click to expand...
Click to collapse
:laugh:was kidding with you. Just follow sj advice, install this app, to see what thing is draining your battery.
SupremeJaguar said:
wow, that's a HUGE drain. I recommend installing a wakelock detector to see what is causing that huge drain on your phone
This is how you would go about using the app to find the issue.
1) Install the app from google play "Wakelock Detector-Save Battery"
2) Open it
3) Once it opens, reboot your phone
4) Once it reboots, leave it for 5 mins
5) Unlock your phone and open the wakelock detector
6) Check the bar at the top to see if your phone was asleep and how long it was asleep for (should be around 4 mins)
If it is 4 mins or above, then your phone should not be having battery drain, ensure you are swiping away apps after use.
If your phone was awake the whole time, then you will be able to see what is causing this and you should uninstall this app
Also, you should enable the power saving option to maximise battery life.
Make sure you charge the phone while its turned off, apps can interfere with the charging process while the phone is one, this could also be the cause of your drain, so turn off and then charge.
Click to expand...
Click to collapse
This is after 8 minutes no used
stefan.xd15 said:
This is after 8 minutes no used
Click to expand...
Click to collapse
Seems normal to me, deep sleep is good. Ask here, in the WD thread, maybe someone could help you. Better than post it here. Have a nice day.
mauam said:
Seems normal to me, deep sleep is good. Ask here, in the WD thread, maybe someone could help you. Better than post it here. Have a nice day.
Click to expand...
Click to collapse
You thing that they could help me? It's a problem that WD could fix?
stefan.xd15 said:
You thing that they could help me? It's a problem that WD could fix?
Click to expand...
Click to collapse
I think WD thread is the best place to ask & WD will help you only to detect which app is draining your battery.
mauam said:
I think WD thread is the best place to ask & WD will help you only to detect which app is draining your battery.
Click to expand...
Click to collapse
I'm just sayn' that i don't think that is a problem with some drain. I think than my phone don't know exactly how much battery have. Sometimes has 3% and after one second of chargin' has 47%. I just reset phone to factory settings and, same problem ):. I'll post there. Hope that someone can help me
stefan.xd15 said:
I'm just sayn' that i don't think that is a problem with some drain. I think than my phone don't know exactly how much battery have. Sometimes has 3% and after one second of chargin' has 47%. I just reset phone to factory settings and, same problem ):. I'll post there. Hope that someone can help me
Click to expand...
Click to collapse
Ok, there is no specific app that is causing that your problem. So do you charge while your mobile is on, or off?
Also, is your phone rooted? If it is, try re-calibrating your battery.

Problems after Repair (Battery or Processor)

I sent my phone in for the purple camera problems and I got it back last week.
When I received it, it was updated to 4.3 Sense 5, most likely from the latest RUU.
Since I got my phone back, my battery has been horrendous and I noticed it had heat problems. I checked battery health and it said it's good, so I figured I just needed to re-calibrate my battery so I gave it a week of use. It's been the same horrible battery life.
I checked for wakelocks but there were no significant ones I haven't seen before. I've attached some screenshots of battery use. One thing that confuses me is that it shows Wifi running for 9 hours, even though I had it off for most of that. Is this normal?
To deal with the heat, I had to install a custom kernel and undervolt/underclock a bit. Before flashing, I noticed this thing is forcing itself to max frequency (1.7 GHz) which explains the heat. So the battery is draining because of this, presumably. I switched to intellidemand and lowered the clock a bit so it can last 12 hours (Doing nothing at all) instead, but that's still horrible compared to what I had before I sent it in.
Before I sent my phone in I typically had stock kernel while using insert coin or trick, Power Saver On, Auto-Sync Off, All Play Services/Google Now On and got 4-5 hours OST. Now I can barely get 2 hours.
Does anyone know where I can look to find the cause of my processor forcing itself to max frequency? I want to figure this out before I annoyingly have to send it in again. (Have to S-On/Re-Lock again =\)I was thinking maybe something shorted when they replaced the camera.
PcFish said:
One thing that confuses me is that it shows Wifi running for 9 hours, even though I had it off for most of that. Is this normal?
Click to expand...
Click to collapse
Settings -> Wi-Fi -> Advanced (in the menu) -> uncheck scanning always available
nkk71 said:
Settings -> Wi-Fi -> Advanced (in the menu) -> uncheck scanning always available
Click to expand...
Click to collapse
Thanks, I guess it's normal then since I never turned that off before.
Now to figure out why the cpu is forcing max frequency all the time on stock kernel/firmware.
PcFish said:
Thanks, I guess it's normal then since I never turned that off before.
Now to figure out why the cpu is forcing max frequency all the time on stock kernel/firmware.
Click to expand...
Click to collapse
must be some rogue app, maybe best to factory reset, install (or restore) apps one by one.
if you're rooted use Titanium Backup, and check out Greenify for facebook and similar apps.
nkk71 said:
must be some rogue app, maybe best to factory reset, install (or restore) apps one by one.
if you're rooted use Titanium Backup, and check out Greenify for facebook and similar apps.
Click to expand...
Click to collapse
Those screenshots were from after factory resetting. I'm considering RUUing back to 4.1.2 and flash my way back to 4.3 and see if that helps.
PcFish said:
Those screenshots were from after factory resetting. I'm considering RUUing back to 4.1.2 and flash my way back to 4.3 and see if that helps.
Click to expand...
Click to collapse
see how it goes with the wifi scanning off
nkk71 said:
see how it goes with the wifi scanning off
Click to expand...
Click to collapse
That gained me maybe an hour. Just applied a Sense 5.0 4.3 and it seems to be better. 10 hours on idle with 40% left. A lot better than 8 hours to dead. I'll give it a couple days and re-calibrate the battery to see if it's all okay. I've noticed very steep drops from when the screen is on. Thanks again for the help.
PcFish said:
That gained me maybe an hour. Just applied a Sense 5.0 4.3 and it seems to be better. 10 hours on idle with 40% left. A lot better than 8 hours to dead. I'll give it a couple days and re-calibrate the battery to see if it's all okay. I've noticed very steep drops from when the screen is on. Thanks again for the help.
Click to expand...
Click to collapse
"I've noticed very steep drops from when the screen is on" <- try lowering the max screen brightness

Battery draining after oreo updat

Hello everyone,
I received Oreo update 3 days ago and I have noticed that my battery is draining since that update. For instance, when I use facebook it drains by 1% every 2 minutes and it was not like that before update. What should I do?
I really need to go back to nogut.
Any help?
firefoxrebo said:
Hello everyone,
I received Oreo update 3 days ago and I have noticed that my battery is draining since that update. For instance, when I use facebook it drains by 1% every 2 minutes and it was not like that before update. What should I do?
I really need to go back to nogut.
Any help?
Click to expand...
Click to collapse
I had the same when I first installed Oreo.
Then I went to Settings, Device maintenance , Battery, Battery usage and found that android system drained my battery. I un-ticked "Allow background activity" and fixed draining.
You may also give it some time to calibrate battery measurement.
After 6 days with Oreo, I can say it's a little bit better than Nougat regarding battery.
freco said:
I had the same when I first installed Oreo.
Then I went to Settings, Device maintenance , Battery, Battery usage and found that android system drained my battery. I un-ticked "Allow background activity" and fixed draining.
You may also give it some time to calibrate battery measurement.
After 6 days with Oreo, I can say it's a little bit better than Nougat regarding battery.
Click to expand...
Click to collapse
Thank you for your reply. I also noticed that Yesterday. Is it ok not to allow Android System in the background? Would that affect the usage of the phone?
Thank you again for your interest.
firefoxrebo said:
Thank you for your reply. I also noticed that Yesterday. Is it ok not to allow Android System in the background? Would that affect the usage of the phone?
Thank you again for your interest.
Click to expand...
Click to collapse
if you unmark Android system I'll again be found as marked ..
razor6_4 said:
if you unmark Android system I'll again be found as marked ..
Click to expand...
Click to collapse
so any help downgrading?
firefoxrebo said:
so any help downgrading?
Click to expand...
Click to collapse
if you are not rooted then just flash your nougat file through odin... don't use home_csc...use csc...and others are pretty like same...
I'm facing this as well. I disabled all apps using background process.
Let's see it will solve this issue.
firefoxrebo said:
Hello everyone,
I received Oreo update 3 days ago and I have noticed that my battery is draining since that update. For instance, when I use facebook it drains by 1% every 2 minutes and it was not like that before update. What should I do?
I really need to go back to nogut.
Any help?
Click to expand...
Click to collapse
Do you use the built-in app power monitor in settings/battery?
Use Betterbatterystats to see what's going on. Additionally, try a day or two with wifi turned off. I had huge battery drains on nougat when wifi was on and with it off I got 5 days on a single charge!! Maybe the same bug carries over to Oreo? Not sure, but worth a try if you can afford the data usage.
I'm having the same issue, and it's not like Device Maintenance and BetterBatteryStats are showing anything suspicious at all. One night idle time is nice, then on other nights i find it having a decrease of 15%.
This is my battery statistics screenshot
firefoxrebo said:
This is my battery statistics screenshot
Click to expand...
Click to collapse
Your Android System drain is way too high...something wrong there for sure...
If you haven't already, do a full wipe/ factory reset. This fixes most problems, including battery drain, after a major update.
rile1564 said:
If you haven't already, do a full wipe/ factory reset. This fixes most problems, including battery drain, after a major update.
Click to expand...
Click to collapse
I have done this twice man. Still the same. I am sure this stupid company is doing something in this update.
firefoxrebo said:
I have done this twice man. Still the same. I am sure this stupid company is doing something in this update.
Click to expand...
Click to collapse
Have you tried better battery stats? Do you use the app power monitor in the Note 8 settings at all? It's got to be some of your apps or saved settings...
firefoxrebo said:
This is my battery statistics screenshot
Click to expand...
Click to collapse
Wow!! Android system is killing it. Dude, I had the same issue on nougat. Not sure if it'll work on Oreo, but try it: turn off wifi completely. Use cellular if you can for a day or two. Do this after a full recharge so battery stats have resetted so you can see if that makes a difference.
Also, use Betterbatterystats and give it permissions on adb. Post screenshots from that. The one you posted already isn't telling at all.
I downgraded it to Nogut and I think I am fine now. F**k this update. I think this company is intending this sh*t to push up its sales.
Fix for battery drain for Note 8 after upgrading Oreo
1) Go to settings
2) Go to Apps
3) Click on the three dots located in the upper right hand corner.
4) Select "Reset App Preferences"
5) Power your phone off and on again and the battery draining problem should be fixed.
cthompson1972 said:
1) Go to settings
2) Go to Apps
3) Click on the three dots located in the upper right hand corner.
4) Select "Reset App Preferences"
5) Power your phone off and on again and the battery draining problem should be fixed.
Click to expand...
Click to collapse
Have you tried it on your own ?
Yes. I am on my phone right now and have been on YouTube this evening with normal battery drain. After the update yesterday my battery was draining for no reason and I had to charge my phone three times. I remembered this fix from the last update when I didn't want to reset my device. I figured it had something to do with all of the Apps utilizing my location, so I wanted to do a reset of the Apps without resetting my device and it worked.

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