Develop Bugs

[Q] Gingerbread huge battery drain

This seems strange.Yesterday after upgrading to gingerbread ( with the RUU because the OTA didn't work for me) I got a huge battery drain.Over the night I got a loose of 40% and now only 3 hours after unplugged and lost 20%.
I only took a few pictures and a phone call.
Only few apps installed since i got this rom since only yesterday.
Anybody experienced this and is there a fix?

Hello,
I can confirm this.
I have also a high battery drain with ALL Android 2.3.* ROMs.
I use the recommend Radio for each ROM and I've checked the RIL to be sure the Radio is correct. But doesn't matter, current in StandBy is between 30 and 50mA.
Only if I turn off WLAN and Mobile Intenet, then I have normal values between 3 and 5mA.
With FroYo I can leave WLAN and Mobile Internet enabled and I had 3-5mA in StandBy
It could not be an application, because I've tried this with a fresh install without Google account to avoid the installation of external apps.

Crusoe86 said:
Hello,
I can confirm this.
I have also a high battery drain with ALL Android 2.3.* ROMs.
I use the recommend Radio for each ROM and I've checked the RIL to be sure the Radio is correct. But doesn't matter, current in StandBy is between 30 and 50mA.
Only if I turn off WLAN and Mobile Intenet, then I have normal values between 3 and 5mA.
With FroYo I can leave WLAN and Mobile Internet enabled and I had 3-5mA in StandBy
It could not be an application, because I've tried this with a fresh install without Google account to avoid the installation of external apps.
Click to expand...
Click to collapse
you'd have to edit the build.prop and change the rescan time from 15 seconds to 30, 60, 90 or 120 (or whatever you perfer the rescan intercal to be at)

Crusoe86 said:
Hello,
I can confirm this.
I have also a high battery drain with ALL Android 2.3.* ROMs.
I use the recommend Radio for each ROM and I've checked the RIL to be sure the Radio is correct. But doesn't matter, current in StandBy is between 30 and 50mA.
Only if I turn off WLAN and Mobile Intenet, then I have normal values between 3 and 5mA.
With FroYo I can leave WLAN and Mobile Internet enabled and I had 3-5mA in StandBy
It could not be an application, because I've tried this with a fresh install without Google account to avoid the installation of external apps.
Click to expand...
Click to collapse
Try resetting the battery stats by doing the whole charge, lead out, charge, turn off, charge etc. thing.
Also, whilst not a stock RUU I did find it took a few days for the battery drain to calm down a bit. First instal lowest was around 50mA but adfter a fe days it went down to 4-5mA.

JSLEnterprises said:
you'd have to edit the build.prop and change the rescan time from 15 seconds to 30, 60, 90 or 120 (or whatever you perfer the rescan intercal to be at)
Click to expand...
Click to collapse
Thank you for your help
What does that value do?
Is that the rescan value of WLAN?
The current stays high even if WLAN is off and mobile internet is on.
Only if both are disabled I get a low StandBy current.
Mr_JMM said:
Try resetting the battery stats by doing the whole charge, lead out, charge, turn off, charge etc. thing.
Also, whilst not a stock RUU I did find it took a few days for the battery drain to calm down a bit. First instal lowest was around 50mA but adfter a fe days it went down to 4-5mA.
Click to expand...
Click to collapse
Thank you, too
Yes I know this, and I've tried this every time I was flashing a ROM (I mean reset the battery stats)
After a few days? How many days do you mean? 2, 3, 4, 5 days?
@both
But why this problem does not exist on froyo?

Crusoe86 said:
After a few days? How many days do you mean? 2, 3, 4, 5 days?
Click to expand...
Click to collapse
Varies but on average I find it takes about 3 days to settle to a point where I see a consistent drain.
Crusoe86 said:
But why this problem does not exist on froyo?
Click to expand...
Click to collapse
Unknown. It's not 100% due to GingerBread as I've only seen a handful of people complain of this issue (relatively speaking). I see more people saying how much better their battery life is after the update than saying it's poorer.
Doesn't help I know but makes me believe that this is maybe a Network / Radio issue in that the new Radio with GB does not play well with the Network. We had this a few times on the HTC Hero.

Ok...i have airplane mode on for about 2 days.in those 2 days i almost didn't use the phone and got only a 7% lose.As soon as i used the camera(recorded around 15 min) it got down to 50% .
I will test it tonight widought airplane mode on and see the resoults.Also wifi seems to a lot of battery in comparance to froyo.
Sent from my Desire HD using XDA App

I haven't noticed these problems with CM7. I got 2.5-3 hours per 1% of drain in standby using juice defender.
If you are finding that turning off data etc is fixing the problem use juice defender. Even the free version will help a lot as it will stop your phone using data willynilly and instead turn it to a periodic sync. With the paid version you can have it stop all together during certain periods or increase doing certain periods. Aka stoping at night and extra during busy hours at work.
Should be a good fix, though it is only covering up the underlying problem still.
Can't really recommend the app enough. With it my phone only uses data when I tell it to (like opening facebook app) or periodicaly to sync and check emails etc. I do use the paid version though for the extra features.

totally agree. i have been using juice defender for about a week. its been a big help. just bought the ultimate a few min ago. going to start customizing.
sorry that i dont have any data yet to back up my statement. maybe in a future post.
Sent from my ThunderBolt using XDA Premium App

im using Leedroid 3.0.3 and i dont get any such battery drain..
tbh im getting a better battery life from GB than from froyo..
on standby currentwidget shows me between 4-7ma with wifi on... with a peak once in a while..and i lose abt 1 to 1.5% per hour
with wifi off i get about 3-5ma..
i dont use mobile data much so cant really comment on that..
try calibrating your battery and try changing the scan interval in the build.prop... i normally keep it at 90...
i never used any battery saving apps, so cant comment on their performance either...
go to wifi advanced settings and untick Best Wifi Performance... that also helps a lot!
hope you get your problem sorted

Thank you all for the help
The issue was not with gingerbread...I just left my phone one night with wifi turned on and lost 40%.But still when I was on Froyo wifi wouldn't loose so much battery.Now I loose almost 2-3% every 15 min if surfing the web with wifi.
And about changing the scan interval in the build.prop...How can I do that?Do I need root?

I'm also having battery problems, but mine are a little bit different, if I'm on wifi it uses between 3 to 5% with a peak now and then. if wifi is off and I'm on 3g, it's between 5 and 500 ma and you see only peaks if you check currentwidget. anyone a clue? working on ARHD 5.1.6 now, but problem was there since version 3

I have battery problems also, my battery dries after 1 day of use. For example this morning, I unplugged my phone full from the charger at 10 am. I went into town, listened to about 20 minutes of FM radio. When i stopped the radio, I still had 98% left of the battery. OK so far. After, I talked for about 5 minutes, sent 4 messages and played for about 15 minutes. I arrived home at 2 pm with 75% of battery left. That is 25% in 4 hours.
I was on 3G, but with Mobile network off. BT, WIFI, GPS off. A few days ago, I tried running the Battery Calibration app, but seen no improvements so far. My phone is routed, 2.3.3 and has Android Revolution HD 5.0 RC1 ROM .
I expected the battery not to last for long, but this is ridiculous.
Help me, please!

I don't know if that will help, but I sometimes switch to 2G networks as HSDPA is using quite a lot the battery.
I have a DHD running 2.3.3, and it's definitely the mobile standby bit which is first in the battery use screen (33%). It was true before 2.3xx but now it's a bit more - annoying in other words.
I have to admit, having to switch to 2G networks is a bit of a pain in the *ss, so I'll check if juice defender give me some good results tomorrow and will post a feedback there.

Maybe try AR 5.1.6. + he recommended radio. It works wonders. the battery life is improved a lot...
malik

Juice Defender works very well - with basic settings I still have 35-40% of battery by 7pm.

furstrated with the battery life...
hey guys,
so this is my first post and all i've done up until now was to read... i'm afraid not real solution has come up.
i have:
Leedroid 3.1.2 with the recommended radio and i ran the script for Full Wipe 1.5 and cleared the battery stats, i did a fresh install and then didnt restore from backup - just installed everything from scratch. i hoped it would be ok, but when i woke up to check the current widget log, i saw that in the middle of the night he climbed to 150mA and stayed there draining about a 1% of battery in 3-4 minutes (!!!)
what can i do? 'where is my droid power' shows only HTC Sense at about 3.8%
please please help... thanks!

Wifi Battery Drain

Hi guys
I have a LTE Note II and have had this battery drain on standby where wifi will absolutely destroy my battery. This has been going on for months and months and I'm just not sure if Samsung are ever going to resolve this and it is quite the pain in the arse.
I've done many tweaks to my phone, and all location services are off. Also, I've set it as a static IP, but nothing seems to help. I think this is related to the wlan_rx_wake wakelock? I get the impression my phone is responding to the wifi and getting woken up constantly.
Does anyone else experience this and do you have any suggestions?
P.S. please don't mention my apps causing it. It definitely is not. I know my way around Android and also, my Nexus 4 with the same setup (but location + google now turned ON) absolutely annihilates my Note II battery life on standby. This is clearly a Samsung problem that they have ignored for the best part of a whole year, and it seems to be related to wifi.
Any help would be greatly appreciated.
Thanks

Do u have some figures about this battery drain to be able to compare with my phone?
It could be a bad modem/connection. What is your configuration?

Primokorn said:
Do u have some figures about this battery drain to be able to compare with my phone?
It could be a bad modem/connection. What is your configuration?
Click to expand...
Click to collapse
No exact figures but I have been observing it for months now and it hasn't been the case with any other phone I use. With wifi on, it'll drain around 20% overnight. With Wifi off, it'll drain 5 or so %. With Wifi on on every other phone I own/owned, it will barely drain at all overnight.

Type *#0011#
Check wifi setting
Sent from my GT-N7100 using xda app-developers app

This is what I got when I entered that it

After *#0011# go to menu and select wifi in order to see if power safe mode is on.

Yeah it is on
Is that bad?
Sent from my Nexus 4 using Tapatalk 4

That's not bad, it improves battery usage. I don't recognize your problem. Does the phone go into deep sleep with wifi on? Which rom do you use?

Hielko said:
That's not bad, it improves battery usage. I don't recognize your problem. Does the phone go into deep sleep with wifi on? Which rom do you use?
Click to expand...
Click to collapse
Stock ROM. And yeah, but it is constantly being woken up.

Sorry for the bump, but this hasn't changed.
I'm not sure if this is to do with just the N7105, but it is something that just won't go away. I'm now finding I lose between 20 and 30% overnight (around 7 hours) with wifi on, or about 10% with data on. With these both turned off but the phone radio still being on, it only drops about 2% in the same time. This was tested with bluetooth/gps and sync turned off.
I don't really have the time to write up everything that I have tried, but suffice to say I have tweaked the phone a lot over the past few months trying to sort this out, but nothing works.
Here is a quick summary of the stuff I have done.
Firstly, I have to run a stock rom and kernel because there is an app I need that will not work on custom roms/kernels. It also doesn't work on root but I have found a procedure to toggle unroot/root when need be and it works fine. Therefore I'm stuck on 4.1.2 as I want to be rooted but I cannot use any custom rom or kernels.
I have tried factory wiping the phone/installing later versions of 4.1.2, etc etc and the same problems still exists with a freshly wiped phone and no apps installed. This problem also doesn't happen with my Nexus 4 or any other phone I have owned with the same setup, so I am very certain it is not due to a misbehaving app.
I have frozen a lot of bloat with titanium backup, I have hibernated a hell of a lot of stuff with greenify (including system app where there are no perceivable negative consequences)
I have added a few tweaks to the build.prop such as to disable fast dormancy and a few other supposed power saving ones which are meant to help with the msm_hsic wakelock.
There are many other things such as setting a static IP, and also tweaking with my router based on some advise I found on these forums. Nothing much has helped.
Location services and google now are off, and I'm not using the Samsung bloatware apps.
I use betterbatterystats and the partial wakelocks are fine. Very low infact.
However, IMO it is two "kernal wakelocks" which are causing me the problem.
wlan_rx_wake - in regards to the wifi
mdm_hsic_pm0 - in regards to the data
These are by no means outrageously high. My estimation is perhaps 10 mins wake up time and around 2000 "expire time" (whatever that means) every 3 hours or so. However, these two are always the highest kernel wakelock depending on if i'm using wifi (wlan_rx_wake) or data (mdm_hsic_pm0). My phone is also not being kept awake too long too in general.. at a guess around 3 hours awake time for every 2 hours screen on time for every 15-20 hours.
I can't remember if these kernel wakelocks were super duper high in the past, and the fixes I tried actually lowered them, but I still notice this massive Idle drain when on data or wifi (just over 1% per hour - or 2-3% per hour respectively).
In regards to the Wifi.. I suspect that packets are being sent from my router which are constantly waking up my phone. Unfortunately, I haven't been able to solve this problem with any of the router-side fixes I've tried.
This leads me to suspect that the wifi and data radio of the N7105 is power hungry, or I've had a faulty unit since day one. I keep hearing about this stellar battery life for this phone but, for me, the best I've ever got is around 20 hours. This may sound good but the problem is it is 20 hours with 6 hours screen on time, or 20 hours with 2 hours screen on time. This doesn't seem to make a difference where I should be getting two days when I only have 2 hours screen on time.
Any help would be greatly appreciated, and any experiances of others with the N7105 may help find out if it indeed is more power hungry. I'd also like to add that my network does not support 4G yet so this is all on 3G and NOT LTE.
Thank you, and sorry for such a long post.

fade2black101 said:
Hi guys
I have a LTE Note II and have had this battery drain on standby where wifi will absolutely destroy my battery. This has been going on for months and months and I'm just not sure if Samsung are ever going to resolve this and it is quite the pain in the arse.
I've done many tweaks to my phone, and all location services are off. Also, I've set it as a static IP, but nothing seems to help. I think this is related to the wlan_rx_wake wakelock? I get the impression my phone is responding to the wifi and getting woken up constantly.
Does anyone else experience this and do you have any suggestions?
P.S. please don't mention my apps causing it. It definitely is not. I know my way around Android and also, my Nexus 4 with the same setup (but location + google now turned ON) absolutely annihilates my Note II battery life on standby. This is clearly a Samsung problem that they have ignored for the best part of a whole year, and it seems to be related to wifi.
Any help would be greatly appreciated.
Thanks
Click to expand...
Click to collapse
I ain't expert...
but, I would suggest like this :
Go to wifi, press menu and then Advanced (advanced setting of the wifi).
uncheck/untick "Scanning always available"
"Keep wifi on during sleep" = set to Never.
uncheck / untick "auto network switch btwen wifi network and mobile networks"
all these helps me to minimize the usage of wifi during night times (when I sleep). Anyway, device also need to have a deepsleep
Hope can help you as well.
Sent from the corner of this rounded earth.

25% battery consumption overnight...

Hi everyone
hope this is a good place for this. I just bought a brand new P2 and yesterday I was doing some configuring for it and updated it to 7.0 (S244 stock). I did wipe it after all the updates according to instructions on this forums. Before going to sleep I charged it to 100%, unplugged the charger and left the phone with all connectivity (wifi, lte, bt, nfc etc.) turned off. I expected 2-5% battery drop but when I woke up in the morning it went down by 25% (!). Also my wallpaper changed to black colour(?). Something's definitely wrong What can I do about this?
Power manager shows the system as the main source of battery drain.
Another thing I noticed is that the video (YouTube, VLC) and alarm sounds are stuttered, there is like 0.5 sec lag every 10-15 secs...
Please someone tell me if this is normal and what can I do? Should I do factory reset once again or maybe flash the firmware? Can that help?

UPDATE:
I have found that the cause of the baterry drain problem is the CPU, it does not go to deep sleep at all and CPU-Z shows that it constantly jumps beetwen 652Mhz and 1401 or 1689Mhz on all 8 cores (even with no apps in the background and all connectivity turned off). Please have a look at my screenshots from GSam Battery Monitor:
https://photos.app.goo.gl/vCVRlHbnKxWr8X1m1
https://photos.app.goo.gl/HwZqMuQFPHLK9C2D3
https://photos.app.goo.gl/eV8uRP3AZ4SARze03
Clearly something is wrong, any suggestions? Please guys tell me something.

Is nobody else experiencing this? Does no one have ANY suggestions for me whatsoever? I did a factory reset, phone is still losing 1-2% battery per hour with all connectivity and screen OFF. So basically it loses per hour what it should lose during whole night.

Are you on Nougat or Lollipop?
Can you post up the system battery stats from the phone.
Which apps have you installed?

Try these...
krzylew said:
Is nobody else experiencing this? Does no one have ANY suggestions for me whatsoever? I did a factory reset, phone is still losing 1-2% battery per hour with all connectivity and screen OFF. So basically it loses per hour what it should lose during whole night.
Click to expand...
Click to collapse
Obviously the deep sleep is not happening in your unit. Let's see what is the root of this problem:
1) Settings > WLAN > cog-wheel icon > Keep WLAN on during sleep = Never.
2) Settings > Power manager > Battery saver > On.
3) Settings > Data usage > Data saver > On. Ensure zero apps is allowed to use unrestricted data when Data Saver is on.
4) Charge the device till 100% (do it before bedtime).
5) Turn on Airplane mode.
6) See the per hour drain the next morning. It should be between 0.1% to 0.3% per hour in the GSam Battery Monitor app (assuming you slept for 8 hours).
If the above result is true, meaning, there is / are 3rd party apps that trigger the wake lock activity. But which app(s) to be blamed? Please list down the apps list for us to test in our unit.

@Treboeth, Nougat (s244) as I wrote in the first post. Battery stats after the night attached below.
@azeemzuhair Thank you for your input. Im going to describe what I did. Yesterday I did the factory reset, I didnt install ANY new applications (except for Alarmy but I needed it and phone was losing same amount of energy without it). So the only apps that drain the phone are the system apps themself. Before going to sleep I charged the device to 100%. As for points 1-3 from your post both WiFi and Data were OFF as well as bluetooth and NFC. I left it for the night with screen OFF. These are results after the night (SoT 1 min., standby 9 hours, 22% of battery gone, so that gives approximately 2% discharge rate per hour). This is clearly terrible. Any ideas what next?

krzylew said:
@Treboeth, Nougat (s244) as I wrote in the first post. Battery stats after the night attached below.
@azeemzuhair Thank you for your input. Im going to describe what I did. Yesterday I did the factory reset, I didnt install ANY new applications (except for Alarmy but I needed it and phone was losing same amount of energy without it). So the only apps that drain the phone are the system apps themself. Before going to sleep I charged the device to 100%. As for points 1-3 from your post both WiFi and Data were OFF as well as bluetooth and NFC. I left it for the night with screen OFF. These are results after the night (SoT 1 min., standby 9 hours, 22% of battery gone, so that gives approximately 2% discharge rate per hour). This is clearly terrible. Any ideas what next?
Click to expand...
Click to collapse
Just turn on AIRPLANE mode for a night and let us know the result...

azeemzuhair said:
Just turn on AIRPLANE mode for a night and let us know the result...
Click to expand...
Click to collapse
Ok, will do! Im also installing wakelock detector and gsam battery monitor right now so I will be able to provide data from them tomorrow in the morning.
Thank you for interest in my problem!

Airplane vs active SIM stand-by drain...
Airplane mode stand-by drain @ 0.1% per hour:
Single SIM Active mode stand-by drain @ 0.5% per hour:

Ok, so I left it in Airplane mode for the night and the discharge rate was 0.2%, that is some progress. After that I charged it to 100%, unplugged, disabled the Airplane mode and left it for 5 hours. Battery drain is due to SIM card and phone although they were not used and the signal was good. Everything can be seen in these screenshots:
https://photos.app.goo.gl/cTlXphRgSivX7oe12
Any ideas?

krzylew said:
Ok, so I left it in Airplane mode for the night and the discharge rate was 0.2%, that is some progress. After that I charged it to 100%, unplugged, disabled the Airplane mode and left it for 5 hours. Battery drain is due to SIM card and phone although they were not used and the signal was good. Everything can be seen in these screenshots:
https://photos.app.goo.gl/cTlXphRgSivX7oe12
Any ideas?
Click to expand...
Click to collapse
i am also facing these issues
battery drain is due to simcard
someone said poor signal connection in my area is the reason
btw which operator are you using?
if you found any solutions please do share:angel::cyclops:

The Alarmy app is the root of the problem...
krzylew said:
Ok, so I left it in Airplane mode for the night and the discharge rate was 0.2%, that is some progress. After that I charged it to 100%, unplugged, disabled the Airplane mode and left it for 5 hours. Battery drain is due to SIM card and phone although they were not used and the signal was good. Everything can be seen in these screenshots:
https://photos.app.goo.gl/cTlXphRgSivX7oe12
Any ideas?
Click to expand...
Click to collapse
My hypothesis is that the "Alarmy" app caused the wakelock. By judging at the Airplane mode, Alarmy still wakes the "CPU". You may try to uninstall it and monitor the energy consumption for the next 3 days...

azeemzuhair said:
My hypothesis is that the "Alarmy" app caused the wakelock. By judging at the Airplane mode, Alarmy still wakes the "CPU". You may try to uninstall it and monitor the energy consumption for the next 3 days...
Click to expand...
Click to collapse
Alarmy is not the problem, take a look at screenshots from today's morning:
https://photos.app.goo.gl/tOCJYmRNJOdSgVi23
The problem is SIM card and "Phone" but the reception in my area is exceptional as can be seen from one of the screenshots.

Network reset...
krzylew said:
Alarmy is not the problem, take a look at screenshots from today's morning:
https://photos.app.goo.gl/tOCJYmRNJOdSgVi23
The problem is SIM card and "Phone" but the reception in my area is exceptional as can be seen from one of the screenshots.
Click to expand...
Click to collapse
Try "Network Reset"
Still the same? Wipe cache partition in the stock Lenovo Recovery.
Finally, hard reset is the last resort.

Thank your for your reply. Removing SD card fixed the SIM management drain but the "Phone Services" still drain the battery. I did the network settings reset and will see if it helps. As for cache wipe and factory reset I'd like to remind that the whole troubleshooting process started with factory reset so I dont know if that can help.
Screenshots from today morning:
https://photos.app.goo.gl/WjKu2bi3XeSAQYXj1

I decided to return this chinese crap, took Samsung instead, no battery drain so far. Thank your for your help!

new battery and having the same problems before the old one died.

Hi all,
I got a new battery a week ago, because my phone didn't turn on or charged anymore.
But my battery keeps draining. I lose around 25% in idle at night time. And around 3% every 5 minutes when I use it.
I used gsam for a few days now to see iff there are any applications that are causing the drain. So far I can't discover any.
Also when I'm using my phone the side of the power button gets hotter then the rest of my phone. While the battery and cpu both are under 40 C.
I do have android 10 and 2.1 ui from devbase rom with soldier 6.0 clean installed, tried other roms aswell, so maybe I should get back to android pie?
I also started using ex kernel with the standerd underclock option you can choose while flashing this helps a bit.
Hopefully somebody can help me out.

Some gsam data

I have the same. I used different roms and kernels, all the same. I turn on airplane mode for the night. it helps a bit.

bolek932 said:
I have the same. I used different roms and kernels, all the same. I turn on airplane mode for the night. it helps a bit.
Click to expand...
Click to collapse
Thank you, this reassures me that It's just a coincidence that my battery died, and that the behavior of my phone at the moment doesn't mean it would happen again.

packman89 said:
Some gsam data
Click to expand...
Click to collapse
I do notice, that gsam says that that I am using wifi all the time. And it shows that battery usage is high when this happens.
The only thing is that I never use wifi anywhere..
I don't know if this is something to go on or just normal behavior?

Question A52s 15% battery drain overnight - 0 screen on time, no apps used

Hi, I bought 2 same devices (A52s 5G) for my parents. Problem is with just 1 device (they are set up absolutely the same). The problem is with overnight battery drain. I suspect WiFi is the soruce of the problem, because our WiFi router is set to power of Wifi transmission overnight for 6 hours and turn it on automatically in the morning. The problem is - if I don´t turn WiFi off on the affected device, it eats up 15 percent in 6 hours. On the second device there´s no such problem. WiFi could stay on and in the morning the percentage is down by 1-2 % which I think is perfectly normal since the device is still powered on. Percentage graph shows absolutely nothing in app consumption. For example i fully charge it in the evening and in the morning there is 85 % battery left and battery stats shows screen on: 0 minutes, screen off: 8 hours, no apps used. I think the affected device has problem with searching for WiFi and it want to connect all the time to the router? I would really appreciate your suggestions . Thanks

I'd wipe cache then run device care/optimize.

At night try this. Turn off Wifi, Location. and Bluetooth if enabled along with data.. I do this every night before bed.. When I wake up in the morning i usually have 97% left if it is not on the charger.. When I take it off, and go to work with 100%. It will stay at 100% for up to 3-4 hrs if I leave all mentioned still off.

doubledragon5 said:
At night try this. Turn off Wifi, Location. and Bluetooth if enabled along with data.. I do this every night before bed.. When I wake up in the morning i usually have 97% left if it is not on the charger.. When I take it off, and go to work with 100%. It will stay at 100% for up to 3-4 hrs if I leave all mentioned still off.
Click to expand...
Click to collapse
Yes, if I turn WiFi off, it loses just about 2 percent at night. But if WiFi stays on (parents forget to turn it off in the evening, you know) and it can't connect because my router powers off automatically night, it loses 15 percent, which I think is crazy, isn't it? Can you please try this situation? Would be really grateful

tamas970 said:
I'd wipe cache then run device care/optimize.
Click to expand...
Click to collapse
Tried, with no luck

matthew1811 said:
Yes, if I turn WiFi off, it loses just about 2 percent at night. But if WiFi stays on (parents forget to turn it off in the evening, you know) and it can't connect because my router powers off automatically night, it loses 15 percent, which I think is crazy, isn't it? Can you please try this situation? Would be really grateful
Click to expand...
Click to collapse
It is losing that much, because the wifi is constantly looking for a connection... Keep it on at night and see what happens...

doubledragon5 said:
It is losing that much, because the wifi is constantly looking for a connection... Keep it on at night and see what happens...
Click to expand...
Click to collapse
But you have to turn off your WiFi router, thank you! I tried it on my S21 Ultra, and I lost 3 percent overnight, big difference, right?

Something is quite tricky here , you have 2 same phones with same identical settings and one of them loose over night lot of battery ?
In my humble opinion if you're sure about it there can be only a faulty phone

muppetz said:
Something is quite tricky here , you have 2 same phones with same identical settings and one of them loose over night lot of battery ?
In my humble opinion if you're sure about it there can be only a faulty phone
Click to expand...
Click to collapse
This night I put both phones next to each other, same scenario, before going to bed at 100%. This morning one shows 86 and second one shows 87 percent. Battery stats shows nothing used as usual. So it is problem of both phones, new discovery

Ok , I understand ... There are several settings (look for it) which can save battery over night . 15% battery drain overnight is overall quite too much . My phone , debloated , set with right choices , with moderate use have enough battery for almost 3 days .

What does it mean right choices? Phones are debloated, set with right choices, only thing if parents forget turn off WiFi before bed, in the morning they have 15 percent less battery. So WiFi searching must be culprit. Because WiFi router shuts itself down automatically in the evening. Can someone please confirm that if you leave WiFi ON in phone and turn WiFi router OFF, if you have that much battery drain overnight? Keep everything else off in phone, except WiFi. Thank you

Any recommended debloat/setting guides for the newcomers?

My phone started the same few days ago. I just updtated everything now, will wipe cache, turn off wifi and see what it does overnight.

Turn off 5G, keep only 4G/LTE. This improved my battery life a lot.

I don't have this device so I'm not sure if this works, but Wi-Fi advanced settings should have an option to turn off automatic scanning for Wi-Fi. Try turning that off

I always find always on display feature draining my battery excessively. Try turning it off and see if theres a difference

chirogan said:
I always find always on display feature draining my battery excessively. Try turning it off and see if theres a difference
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They don't use always on. Anyone who is able to try turning WiFi router OFF at night, but keep WiFi ON (in phone) please? That is the only thing which will tell us more...thanks.

matthew1811 said:
They don't use always on. Anyone who is able to try turning WiFi router OFF at night, but keep WiFi ON (in phone) please? That is the only thing which will tell us more...thanks.
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Always on display is activated by default (default settings is "Tap to show") Unless you turn it off manually on the settings, it still is always on and drains that much battery as it needs to be always ready to be tapped. Not using it and not seeing Always on display text means it is off in the settings

chirogan said:
Always on display is activated by default (default settings is "Tap to show") Unless you turn it off manually on the settings, it still is always on and drains that much battery as it needs to be always ready to be tapped. Not using it and not seeing Always on display text means it is off in the settings
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As I said, always on display is turned OFF in both devices. WiFi is the problem, when it´s turned off in phone, it drains 1 percent (max.) at night, when forget to turn WiFi OFF, it drains 15 percent overnight, which I think is crazy.

Arobase40 said:
That could be a problem in the conception of your apartment or your house and the material or furniture in between one of the phone and the wifi router. I have got such a problem but with bluetooth headset when going to the water closet (interference issue) in a temporary apartment when my main one has burnt... ^^ lol
So try to switch both phones at least once and see if the problem persists...
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It has nothing to do with signal, if phone is connected all night (router stay ON), there is no drain. But when I turn router off (which I want to) and forget to turn WiFi OFF in phone, it drains 15 percent overnight. On both A52s phones. On my S21 Ultra there is zero drain overnight, I can calmly leave WiFi on and turn router off.