Database Users

Cell Standby Battery Drain

Hey everyone,
I picked up a T2 on Thursday morning coming from a Maxx, and after the first day I felt I wasn't getting quite the battery life I should. After watching the battery stats and doing some research, the issue seems to be due to Lollipop's well-documented cell standby bug. Coming from KitKat I have been pretty frustrated by this, as my T2 will sometimes drain 5% or more in an hour of idling if WiFi (or possibly Bluetooth) is on, and seems to drain much faster with use if WiFi is on. (Note that all of this is taking place in areas with very strong 4g and WiFi signal).
When WiFi is turned on, Cell Standby tops the battery consumption chart by a large margin and my unscientific eyeball test suggests that the battery drains much faster.
Is anyone else having this issue? I'm considering taking the T2 back, but honestly there aren't any other new phones with comparable battery life, and it would be hard to give up the shatterproof display. Other than this I'm loving the phone and Lollipop.
Thanks!

I'm not having that issue at all and I leave my WiFi on pretty much all the time. I just checked mine and in 13 hrs my cell standby was 8%. Honestly idk if that's good or bad.

I guess I'll just keep an eye on it. Over this past night Cell Standby was on for 10 hours and had the Mobile Radio on for 8 hours while the phone was idle. Not sure if this is intended or not. My battery woes could just be in my head.

cell standby has been near or at the top of all 3 of my Verizon Lollipop phones so dont believe its a Turbo 2 direct issue.

I guess I'll just be patiently awaiting marshmallow then!

Try this, idk if it'll help or not but under WiFi settings under keep WiFi on during sleep, choose only when charging.

gfrrt said:
Try this, idk if it'll help or not but under WiFi settings under keep WiFi on during sleep, choose only when charging.
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Thanks, I'll give it a shot!

I've also read this cell standby time is related to WiFi and possible fixes are as follows. Turn off allow Google to scan for networks even if off, keep WiFi on during sleep charge only, LTE instead of global, and then go into recovery and clear cache. This is what I did and my cell drain is very low. Hope it helps.

gfrrt said:
I've also read this cell standby time is related to WiFi and possible fixes are as follows. Turn off allow Google to scan for networks even if off, keep WiFi on during sleep charge only, LTE instead of global, and then go into recovery and clear cache. This is what I did and my cell drain is very low. Hope it helps.
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Click to collapse
Thanks for the tips - I changed all the settings but I'm having trouble getting into recover. When I try to launch from the bootloader I just get the dead Android with "No Command" displayed below it. Is there something I'm missing? FWIW I have dev mode on and unlock oem bootloader on.

I wouldn't turn on unlock boot loader this disables some security features and unless we have a way to truly unlock it. It's better to leave on. Dev mode doesn't affect drain issue at all. Here's link for booting into recovery.
http://androiding.how/download-droid-turbo-android-5-1-lollipop-ota-update/

gfrrt said:
I wouldn't turn on unlock boot loader this disables some security features and unless we have a way to truly unlock it. It's better to leave on. Dev mode doesn't affect drain issue at all. Here's link for booting into recovery.
http://androiding.how/download-droid-turbo-android-5-1-lollipop-ota-update/
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Click to collapse
Got it. Thanks for the help!

Mine drains fast while sleeping at home. In my case, the signal is poor so the phone has to crank up the radio power, draining the battery.

UPDATE: For anyone interested, the fixes suggested in this thread seem to have done the trick for me. After changing settings and wiping cache I am getting even better battery life (7-8 hours of screen on time up from 5-6 in similar conditions). This could, of course, be due to other factors - but hey, it's worth a shot if your battery is draining quickly!

gfrrt said:
I've also read this cell standby time is related to WiFi and possible fixes are as follows. Turn off allow Google to scan for networks even if off, keep WiFi on during sleep charge only, LTE instead of global, and then go into recovery and clear cache. This is what I did and my cell drain is very low. Hope it helps.
Click to expand...
Click to collapse
Which lte did you pick? There is 2 options. Also how do you get into recovery? Thanks

LTE/CDMA

I personally have noticed that turning off mobile data when connected to WiFi helps. I have done this with previous phones

I experienced this the other day after spending the weekend in an area with spotty service. To fix all I did was reboot the phone.

Ajbeattie said:
UPDATE: For anyone interested, the fixes suggested in this thread seem to have done the trick for me. After changing settings and wiping cache I am getting even better battery life (7-8 hours of screen on time up from 5-6 in similar conditions). This could, of course, be due to other factors - but hey, it's worth a shot if your battery is draining quickly!
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Click to collapse
Hey sorry but could you give a bit of a walkthrough for all the processes you took? Bit of a newbie here and my moto x force doesn't seem to be doing very well with the drain

Giving this a shot now...hopefully this works for me as well

Changing those settings helped immediately

Android OS - Keep Awake and Mobile Radio Active

Hi,
The Nexus 6P has been pretty good so far on battery. Nothing super insane, but enough to get me through a day.
Max I get is 3 hours SOT when I hit 0%...
Android OS is usually in the top 3, and in a 10 hour day, its getting 2 hours of Keep Awake time and about 30min Mobile Radio Active.
Google Play Services is also getting around 45min Mobile Radio Active as well.
Phone is bone stock, bootloader locked, unrooted. Running a handful of apps, even stopped using my Moto360 and disabled bluetooth when not in use to see if that was the culprit.
Any tips? (or apps that help me delve deeper into Android OS and why it keeps waking the thing up)

would also like to know about this, having very similar stats

Similar situation here - crazy battery drain and "Keep Awake" when I have a sim card in (TMo). 3 hours sitting on my desk - not using it - the phone gets warm/hot and Keep Awake shows 1H 16m under Android OS. When I put the same sim back into my Nexus 5 (using the adapter/converter) the N5 battery is perfectly fine.. normal.. no massive drain.
Any thoughts?

Turn off Wifi and give it a try. See if you still have the same battery drain.

pogul said:
Similar situation here - crazy battery drain and "Keep Awake" when I have a sim card in (TMo). 3 hours sitting on my desk - not using it - the phone gets warm/hot and Keep Awake shows 1H 16m under Android OS. When I put the same sim back into my Nexus 5 (using the adapter/converter) the N5 battery is perfectly fine.. normal.. no massive drain.
Any thoughts?
Click to expand...
Click to collapse
Go into location & uncheck all scanning functions

Thanks. I should have mentioned that I already had wifi and bt turned off, and had turned off scanning for both under Locations. I was trying to isolate this to cell signal as best I could by disabling wifi and bt things. I also tried turning off "Enhanced LTE" - and now I'm trying it with wifi calling on (again just to narrow down different possibilities).
I think a factory reset is in my near future - may as well start from completely scratch and see if I still get the same horrible battery drain.

Just reporting back. I did a factory reset - and INITIALLY I thought I was on to something. Battery life seemed better at first, but then I soon began dropping cell signal - which apparently sends the phone off searching for signal chewing up battery.
In my case it's never ending cycle - get signal, drop, search, get signal, drop search.
Yes, I'm in a fairly weak TMo LTE service area, but my Nexus 5 and my wife's Nexus 4 have never had these sort of massive drain issues.
Also, I was in a major metro area on Sat night and the signal kept dropping as well. I couldn't toggle it back on via airplane mode or the mobile data switch. I finally had to reboot to bring it back - and then it proceeded to drop again. Meanwhile, my wife's N4 had no issues.
I went to TMo on Sunday and swapped out the sim - no change. 6P went from fully charged to completely dead overnight (roughly 1AM to 9AM).
So, at this point I'm wondering if I just have a faulty 6P. I'll be calling Google today to see about an RMA exchange :/

pogul said:
Just reporting back. I did a factory reset - and INITIALLY I thought I was on to something. Battery life seemed better at first, but then I soon began dropping cell signal - which apparently sends the phone off searching for signal chewing up battery.
In my case it's never ending cycle - get signal, drop, search, get signal, drop search.
Yes, I'm in a fairly weak TMo LTE service area, but my Nexus 5 and my wife's Nexus 4 have never had these sort of massive drain issues.
Also, I was in a major metro area on Sat night and the signal kept dropping as well. I couldn't toggle it back on via airplane mode or the mobile data switch. I finally had to reboot to bring it back - and then it proceeded to drop again. Meanwhile, my wife's N4 had no issues.
I went to TMo on Sunday and swapped out the sim - no change. 6P went from fully charged to completely dead overnight (roughly 1AM to 9AM).
So, at this point I'm wondering if I just have a faulty 6P. I'll be calling Google today to see about an RMA exchange :/
Click to expand...
Click to collapse
Maybe try activating band 12?
http://forum.xda-developers.com/nexus-6p/general/fastboot-activate-band-12-volte-t3239652

I found that my wifi network was causing doze to not work as good. I turned off wifi at night last night and got better results with just data.
My radio is accounting for 88% percent of my phones battery drain. I was down to 60 percent with about an hour of SoT. Not sure what's going on with my device either. I was about to factory reset but don't want to.
Bums me out when I see people getting 4+ hours. I want that action.

I had the mobile active bug also, very close to getting an iPhone.

I saw in another thread that apps like GasBuddy has been causing wake locks like you describe. The issue may be app related. Rooting and installing a battery monitor app should give you more insight as well as wiping and loading just your basic apps to find the culprit because something is definitely wrong.
I get 6 hr SOT without doing anything special and at night I lose 1%, sometimes none if I only sleep for 5hrs and that's with wifi on.
Sent from my Nexus 6P using Tapatalk

Cell Standby Battery Drain - Verizon

So I recently switched from MetroPCS to Verizon. The day I switched my battery died twice as fast. Cell standby being the problem according to the battery stats. 2nd day, same exact thing. So I did a factory reset. Then the next day the same exact thing. This did not happen on MetroPCS. Also, it seems to only be a problem when WiFi is on, but not connected for most of the day. Which is strange, because I don't see how your carrier would make that a problem. Has anyone else experienced this? Fixed this?
Sent from my Nexus 6P using Tapatalk

No signal?
Check your cell signal connectivity to see if you are losing signal throughout the day, if your phone loses signal your Cell Standby will constantly search for a signal untill it finds one eating your battery. I have this problem when at work, I don't get signal and my battery drains. I fix this by using Airplane mode when I know I don't have signal. Saves my battery Everytime.

Yeah, would be surprised but Verizon may have worse coverage than the Sprint MVNO in your work area. If your cell radio is constantly hunting, it will chew battery. Have you tried Wi-Fi advanced settings to leave Wi-Fi on at all times, even while the phone is sleeping? May sound counter intuitive, but for me Wi-Fi uses almost nothing battery wise. But like Noland said, if you KNOW you will be in an area of poor reception for a long period of time, airplane mode will save battery. Also check data usage by App. You may have a rogue app sucking bandwidth. Cheers.

SocksNUrToaster said:
So I recently switched from MetroPCS to Verizon. The day I switched my battery died twice as fast. Cell standby being the problem according to the battery stats. 2nd day, same exact thing. So I did a factory reset. Then the next day the same exact thing. This did not happen on MetroPCS. Also, it seems to only be a problem when WiFi is on, but not connected for most of the day. Which is strange, because I don't see how your carrier would make that a problem. Has anyone else experienced this? Fixed this?
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Click to collapse
Some Verizon members reported poor cell reception with the current radio. I think the January security updates include a new radio. Maybe that will help.

Cell standby killing the battery

recently i encountered a lot of battery drain even without using my phone ( galaxy s8 dual sim ) i noticed that cell standby is using a lot of battery sometimes as much as if not greater than the screen it self which is weird because my signal is ok i dont think ian losing signal
anybody having this problem ??

alaa96 said:
recently i encountered a lot of battery drain even without using my phone ( galaxy s8 dual sim ) i noticed that cell standby is using a lot of battery sometimes as much as if not greater than the screen it self which is weird because my signal is ok i dont think ian losing signal
anybody having this problem ??
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Click to collapse
The image shows the phone was without signal for some time which was about 32% and it will consume power. Don't know the reason behind this, but if phone really had no signal for a long time, then be in another place where there is a good signal and test there. I have seen few times with my old Moto X, that sometimes after using internet via mobile network(without wifi), the connecting would somehow still be open and it would consume battery and the way to fix this, I had to restart the phone.

Charkatak said:
The image shows the phone was without signal for some time which was about 32% and it will consume power. Don't know the reason behind this, but if phone really had no signal for a long time, then be in another place where there is a good signal and test there. I have seen few times with my old Moto X, that sometimes after using internet via mobile network(without wifi), the connecting would somehow still be open and it would consume battery and the way to fix this, I had to restart the phone.
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Click to collapse
this is ridiculous ! i never had an issue like this with any of my older phones

best bet do a factory reset and see if it still persists

Same happens to me too. Yesterday I went outside my house and traveling in the city - my battery went from 100% to 43% in 6h40min. I had SOT only 1h. I am wondering if something related to GPS is killing the battery as it always drain very fast if i am moving - but in the other hand it seems that phone radio is draining also the battery a lot. Any advices what could I do?

varun.gid said:
best bet do a factory reset and see if it still persists
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Click to collapse
i already did it but no good i think this problem happened after an update

nixun said:
Same happens to me too. Yesterday I went outside my house and traveling in the city - my battery went from 100% to 43% in 6h40min. I had SOT only 1h. I am wondering if something related to GPS is killing the battery as it always drain very fast if i am moving - but in the other hand it seems that phone radio is draining also the battery a lot. Any advices what could I do?
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Click to collapse
cell standby is not related to gps and location services i dont think so at least iam pretty sure it is mainly phone network related

Cell standby drains too much battery
I'm using Galaxy S8 Exynos Version (Dual Sim). Facing this cell standby extreme battery drain issue recently. I have tried several options like- reset network settings, restart / power off-on, factory reset and wipe cache partition to see if the problem goes away or not. These things can solve the problem only for 2-3 days. Then after that same cell standby battery drain occurs again. The only thing left is to hard reset. But I don't think this will solve the problem either. These are not the permanent solution. When I first got the phone this problem was not there. For the last 2-3 weeks I have been facing this issue and it is bothering me a lot coz my battery drains too much even when i'm not using my phone. I really need a solid solution for this. Can anybody help? And I hope Samsung will address this issue and solve it asap.

I think cell standby is the worst problem in the S8. It really kills battery. It can make your phone drop 2% per hour.

Same issue here. Didn't have this issue before the latest two updates. Before I had 6-7 SoT and now barely 2-3 hours.

yes, this issue was not pronounced before the latest updates (one or two as mentioned)

Same thing here. After the last update there is a battery problem with standby. Hope they fix it with next release.

same with my s8+ dual exynos

S8 Battery Drain Oreo (SOLUTION)

Hi everyone,
I have an S8 which after the oreo update its battery performance decreased significantly.
its overnight drain was around 30 - 40 % (no use, no AOD).
However I did something that fixed it and i hope it is the same issue with everyone else so that yo can fix it too.
It's the DUAL SIM
I disabled the dual sim from the sim card manager & now my phone is only working wth one sim. There is a HUGE increase battery performance where now the overnight drain is 3% !!!!.
I hope this helps everyone with the same problem.

Youssef93 said:
Hi everyone,
I have an S8 which after the oreo update its battery performance decreased significantly.
its overnight drain was around 30 - 40 % (no use, no AOD).
However I did something that fixed it and i hope it is the same issue with everyone else so that yo can fix it too.
It's the DUAL SIM
I disabled the dual sim from the sim card manager & now my phone is only working wth one sim. There is a HUGE increase battery performance where now the overnight drain is 3% !!!!.
I hope this helps everyone with the same problem.
Click to expand...
Click to collapse
I am using single sim only from quite a few time.. but still 30-35% of battery drain overnight. Not sure what to do

sp1312 said:
I am using single sim only from quite a few time.. but still 30-35% of battery drain overnight. Not sure what to do
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Click to collapse
I am not sure what is your problem. I'd also note that this only improved the standby time. However the usage time is still bad. For example yesterday I spent an hour chatting on whatsapp & it drained more than 20%. I'm not sure why samsung isn't doing anything about it & I'm thinking of downgrading to Nougat

Youssef93 said:
Hi everyone,
I have an S8 which after the oreo update its battery performance decreased significantly.
its overnight drain was around 30 - 40 % (no use, no AOD).
However I did something that fixed it and i hope it is the same issue with everyone else so that yo can fix it too.
It's the DUAL SIM
I disabled the dual sim from the sim card manager & now my phone is only working wth one sim. There is a HUGE increase battery performance where now the overnight drain is 3% !!!!.
I hope this helps everyone with the same problem.
Click to expand...
Click to collapse
How do you disable? Tks

Tiongkia said:
How do you disable? Tks
Click to expand...
Click to collapse
Settings -> Connections -> Sim Card Manager
Press on SIM2 & disable it.

Youssef93 said:
Settings -> Connections -> Sim Card Manager
Press on SIM2 & disable it.
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Click to collapse
I cannot. Maybe because i did not have 2nd sim insert.

I found a recent reduced battery life on my S8 was resolved with a factory reset.
Anecdotally, a cache partition wipe can help too, though that might just be because (i believe) it forces apps to re-optimise themselves.
Btw, if you had 2 SIMs in and effectively stopping use of 1 slot has improved battery life, then a) try reseating both SIMs b) get new SIMs. Otherwise, maybe it's the SIM reader itself i.e. a hardware issue (which might be that component or a problem on the mainboard).
I guess it could be a software glitch.
I read that the firmware is different for single and dual SIM handsets - you defo using the correct firmware for your handset?
regards,
Gary