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Cell Standby Battery Drain

Has anybody else had trouble with rapid battery drain and Cell Standby being the process that's taken up most of the battery? I'm completely stock and unrooted at the moment

JoeyBert said:
Has anybody else had trouble with rapid battery drain and Cell Standby being the process that's taken up most of the battery? I'm completely stock and unrooted at the moment
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It's a known issue. They apparently added the wrong power draw amount when calculating the percentages so those are wrong but it's not really using more battery, just misreporting.

PJnc284 said:
It's a known issue. They apparently added the wrong power draw amount when calculating the percentages so those are wrong but it's not really using more battery, just misreporting.
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Any fixes out there?

You need to be rooted. http://forum.xda-developers.com/showthread.php?t=1732722

PJnc284 said:
You need to be rooted. http://forum.xda-developers.com/showthread.php?t=1732722
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Do you know if this works only with a custom ROM or can I just use the non-Odin root method?

JoeyBert said:
Do you know if this works only with a custom ROM or can I use the non-Odin root method?
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I used the non-odin route and just installed it on mine. Cell standby dropped from about 30% to only 3% after install.

PJnc284 said:
I used the non-odin route and just installed it on mine. Cell standby dropped from about 30% to only 3% after install.
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Thanks, appreciate the quick responses

PJnc284 said:
It's a known issue. They apparently added the wrong power draw amount when calculating the percentages so those are wrong but it's not really using more battery, just misreporting.
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So with that calculation being incorrect does that result in your battery life draining faster? I just got mine on 9/22 and battery is draining significantly due to cell standby (cell radio being at the top of the list) I heard through a friend that this will be fixed with jelly bean update?
Can anyone shed some light as I just switched over from iPhone 4 and this whole battery issue is disappointing, thanks!

Frankiej1978 said:
So with that calculation being incorrect does that result in your battery life draining faster? I just got mine on 9/22 and battery is draining significantly due to cell standby (cell radio being at the top of the list) I heard through a friend that this will be fixed with jelly bean update?
Can anyone shed some light as I just switched over from iPhone 4 and this whole battery issue is disappointing, thanks!
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Battery not draining faster. Percentage reported in stats is wrong. 30% shown is actually 3% and should be at bottom of list.

prdog1 said:
Battery not draining faster. Percentage reported in stats is wrong. 30% shown is actually 3% and should be at bottom of list.
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Thanks for the reply prdog..one more question cuz I just came back from the Verizon Store and they can give me a new one if I go back since I just got this on Saturday..
So the reported stats is wrong as you stated in Battery setting..so thats the reason why I see my battery level indicator draining? Because it does drain pretty fast.

battery discharge while screen off

I charged it to 100% before going to sleep. When I woke up in the morning, the battery was 82%. I mean srsly wtf ? I have no idea what's going on. This draining issue has started after I've started using oneplus power bank . plz help me. Also there r no wakelocks so that's not an issue.

ronu said:
I charged it to 100% before going to sleep. When I woke up in the morning, the battery was 82%. I mean srsly wtf ? I have no idea what's going on. This draining issue has started after I've started using oneplus power bank . plz help me. Also there r no wakelocks so that's not an issue.
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Post also wakelocks fom GSam Some running app is using up your battery

Here's the app usage screenshot

Here is what I do,
1. Install Battery Monitor Widget from PlayStore.
2. Use the "History" tab in the application to measure the battery drain when idle. The application records the drain every 10 minutes.
I typically have a -6mA drain when the phone is asleep (Google Now running, Location set to "battery saving"). This should give you a good idea on how your phone is behaving.

Gsam sucks, you need to use something like BetterBatteryStats to effectively track down what's causing the wakelock. Get BBS, run the phone normally for a few hours, and then post screenshots of the Other, Partial Wakelocks, and Alarms screens in BBS.
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Transmitted via Bacon

cramukinc said:
I typically have a -6mA drain when the phone is asleep (Google Now running, Location set to "battery saving").
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Actually "battery saving" location eats more battery, than Device only since it's using WiFi + Cellular instead of GPS. At least it's my experience, that I have a bit less drain on Device Only, than on Battery saving.

After a week of using these apps.. I've found that there are no wakelocks, still the battery drains overnight.
Will the battery recaliberation help?
Or maybe chaning the rom?
I'm on stock rom as of now. Non rooted.
PLease please suggest me something.

ronu said:
After a week of using these apps.. I've found that there are no wakelocks, still the battery drains overnight.
Will the battery recaliberation help?
Or maybe chaning the rom?
I'm on stock rom as of now. Non rooted.
PLease please suggest me something.
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Exactly what apps are you using? Can you post some screenshots of the recorded information?
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Transmitted via Bacon

ronu said:
After a week of using these apps.. I've found that there are no wakelocks, still the battery drains overnight.
Will the battery recaliberation help?
Or maybe chaning the rom?
I'm on stock rom as of now. Non rooted.
PLease please suggest me something.
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Click to collapse
I had issues with battery draining when I left my phone somewhere with low signal strength overnight.
Also I experienced battery drains when my I had a slow internet connection. It may be that some applications are trying to sync, but they are unable to due to slow connection. So they try again and again. (I have this issue with K9-Mail).
I would also suggest to check if Google Location Reporting ist switched on. It was also a battery drainer I had a problem with in the past.
So before you start flashing ROMs, make sure this is not related to signal or synchronization problems.

What is causing the battery drain ???
Here r some screenshots
Sent from my A0001 using XDA Free mobile app

Obviously Google+, it tries to sync something, maybe pictures.

Battery drain custom rom? But new battery?

Hi, I have a new battery, only in sleep modus 10 hours there is 30% battery drain?
I have tried resoruction rom en scrwéd but both battery drain? i run only whatsapp and chome,

Same thing happens on a stock ROM? Tried different kernels?

audit13 said:
Same thing happens on a stock ROM? Tried different kernels?
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Hi I tried now Chroma rom. In 1 hour from 99% to 98% so that's good I guess.

My Nexus 5 is about 2 years old. With a stock MM ROM, it drops about 1% every 2 to 2.5 hours with my data, wifi, and Bluetooth turned off.

audit13 said:
My Nexus 5 is about 2 years old. With a stock MM ROM, it drops about 1% every 2 to 2.5 hours with my data, wifi, and Bluetooth turned off.
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I really don't understand. Now it from 98 to 87% ? I did notting on it? !!

Hmm, seems like something else if going on to cause this issue. I suggest trying a stock ROM to see what happens.

audit13 said:
Hmm, seems like something else if going on to cause this issue. I suggest trying a stock ROM to see what happens.
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I install it now with Nexus Root Toolkit. thxn

Same issue on stock rom/kernel from GOogle.
What now?

The battery must be draining because Doze mode might not be working.
Use a free app like Wakelock Detector to determine if there's a Wakelock responsible for the battery drain.

audit13 said:
Hmm, seems like something else if going on to cause this issue. I suggest trying a stock ROM to see what happens.
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imrock0 said:
The battery must be draining because Doze mode might not be working.
Use a free app like Wakelock Detector to determine if there's a Wakelock responsible for the battery drain.
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Thanks. On CPU Wakelock it says Google Play Services 9M 26s.
Wakeup triggers: Phoneservices (24 times)
Kernelwakelock: PowerManagerServices.Wakelock 10m 7.sec
Is this normal? Stockrom Google

YourTheBest said:
Thanks. On CPU Wakelock it says Google Play Services 9M 26s.
Wakeup triggers: Phoneservices (24 times)
Kernelwakelock: PowerManagerServices.Wakelock 10m 7.sec
Is this normal? Stockrom Google
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An expert might help you with finding out if its normal or not.
However, in Wakelock Detector, check on the top to see if the Awake percentage is way more than you would expect. Tapping on it would give you statistics about how much time the phone has been awake(minus the on-screen time).
If the awake time is significant, it means some service is definitely messing up with your phone's battery life.
Whatever app tops the CPU Wakelock list, you can disable it to see if battery life improves.
Good luck

S8+ Battery leak

Hi,
some weeks ago my s8+ (g955f) battery started to drain.
when i checked the issue i saw that the process "Android OS" is on the top of the battery usage list.
it looks like the phone "Stay awake" a lot of hours and it causes the battery drain.
i downloaded Wakelock detector (with usb debugging) and that's what i saw (images attached).
i can't find something unusual in the wakelock list.
somone have any idea?
(the phone is updated to the last version - G955FXXU1AQF7)
Thanks

You lost 11% in 4 and a half hours. That's quite good... How must SoT was included in that time.
If this is the rate, you'll get 2 days of use out of your battery. I can't see a problem here.

what is SoT?
three weeks before the battery life was even better.
the android process takes a lot of battery.
battery status after some hours attached.
you can see that the Samsung DQA and Chrome are on the top.
i don't understand what they are doing when the phone is in a sleep.
Thanks

You can check which app's are draining battery in Device Maintenance -> Battery and put them to sleep

ToMerbi said:
what is SoT?
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Screen on time

Thanks silverkin
The SoT was nothing (around 10 min).
crazyhazy - already checked, you can see the attached images.
Thanks

WLD says it's Whatsapp?

May be poor mobile network can be one of the issue of battery draining which comes in android os section.

sp1312 said:
May be poor mobile network can be one of the issue of battery draining which comes in android os section.
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It can cause the android os to "stay awake"?
if so, maybe that's the problem.

ToMerbi said:
It can cause the android os to "stay awake"?
if so, maybe that's the problem.
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May be not sure.. but at time of poor network it keeps on searching the network continuously and drains the battery.

Guide to debug battery drain due to partial wakelocks

Have you noticed that your phone does not last as long after an os update or just out of the blue? I've faced this issue countless times while changing roms, os versions or even between minor OS updates. After spending a good amount of time researching about possible causes for overnight standby battery drains, partial wakelocks seem to be one of the biggest offenders. The android developer website is a good resource to understand what partial wakelocks are. And as it turns out, you can figure out the app holding the partial wakelock and draining your precious battery without root or any changes to the bootloader/rom. Here we go:
Go to settings > battery and performance (poco f1 on miui) -> power usage ->Tap on the clock on the top right corner -> check if the awake field below the graph is a constant blue line. Or if the device has been awake a lot more than the time screen was on. Other roms also have this graphical view of battery stats under some other option. If the indicators for awake time aon matchre in sync, then this guide won't be able to help you any further. Otherwise move to step 2.
Install better battery stats xda edition from here. Follow the steps mentioned in this post for unrooted devices.
Open the better battery stats app on your phone and make sure the device is not charging. Lock your phone and let it sit for a few minutes.
Open the better battery stats app on your phone and check the CPU state view in dropdown at the top of the app. If percentage of deep sleep is lower than other states and you have not been using your phone a lot since it was last unplugged then the battery drain is real.
Next select the partial wakelock from the dropdown. If an app has a 100% time for wakelock ( duration unplugged = duration of wakelock ), then the app is the culprit. Either uninstall the app, or make sure the app does not have permissions to run in the background to avoid the battery drain.
I used the above steps to find out that MyAirtel app was holding a partial wakelock on PowerManager.wakelock all the time (even when it was not in background). Deleting the app fixed my battery drain which went from 10% per 8 hours to ~3% per 8 hours.
Hope this helps people resolve their battery drain issues.

So what happen if there's no partial wakelocks that's eating battery, but the batterylife is still subpar?

pipyakas said:
So what happen if there's no partial wakelocks that's eating battery, but the batterylife is still subpar?
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then going back to miui 9 oreo is a possible solution

ron_hyatt said:
then going back to miui 9 oreo is a possible solution
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What version do you like?

Dan_Jacques said:
What version do you like?
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miui 9 oreo (v 9.6.25)....the very best

ron_hyatt said:
miui 9 oreo (v 9.6.25)....the very best
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The only problem is the buffer lag to GCam shots :/

Dan_Jacques said:
The only problem is the buffer lag to GCam shots :/
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I am not an expert with gcam but v 6.1.009 works fine

ron_hyatt said:
miui 9 oreo (v 9.6.25)....the very best
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Any xiaomi.EU link???? i can t find smthing
thank u bro

emmanuelo7 said:
Any xiaomi.EU link???? i can t find smthing
thank u bro
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the one i tried was official global stable miui 9(9.6.25) oreo not eu

Check battery health if no partial wakelocks are found
pipyakas said:
So what happen if there's no partial wakelocks that's eating battery, but the batterylife is still subpar?
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Check how many cycles of battery charges have happened. Battery is bound to degrade over time. You can follow this article to see how is your battery health.

a1shakes said:
Check how many cycles of battery charges have happened. Battery is bound to degrade over time. You can follow this article to see how is your battery health.
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Another way to do this using a USB charging monitor. To measure is to know but know what you measure!
A lot of mistakes I have seen on the internet is people checking the capacity the following way. They use the mAh that went into the phone. That is completely wrong since a batteries capacity in mAh is defined at the working voltage of the battery (3.7 or 3.8V) and not using the around 5V that the charger outputs. At QC voltages it will be even lower then!
The more correct way to measure a battery is to work in mWh (milli Watt hour) or the actual power going into the battery. With 'The more correct way' you must take into account that the charging circuit also takes a bit of the juice.
So in our case 3.8V and 4000mAh would result in 15.200mWh. So from 0 to 100% should result in around that value.
At this right moment I am checking mine after a year of use using the UM25C tester.
To be honest I am not really happy about the battery life since it drains about 2 to 3% per hour even during the nighttime on a Xiaomi.eu rom which even reinstalled from scratch to check if it helped.
My redmi note 5 pro is now on , and I bloody kid you not, 34% 6d 2h 3m, yes that is 6 days after I installed a clean rom. And yes, not really much use but still wifi active and a active sim card.