Database Users

Sudden drop in battery performance on my Nexus 6P(no rogue 3rd party apps).

Hello everyone!
So I have been having these battery issues since April security patch. the phone gets really warm to the touch even by doing the simplest of things like browsing and watching youtube. Android OS keeps the phone awake 80% of the time and I am only getting 2-3 hours of use throughout the day. Restored the phone to factory settings(fresh start, nothing restored) three days ago and still the same issue. Android OS drains the battery life even though I made sure that only google apps are installed on the phone.
But today things got even weirder. I disabled Google Now and location services as a test and the battery drain and heat issues were gone temporarily. I was getting a great battery performance from morning to afternoon. I check my battery stats and I notice that Google services mysteriously drained 17% of my battery life and that it's been running for 21 days straight? That's impossible since I just did a fresh reset to the phone three days ago. I rebooted the phone and that "Google services" drain changed to WiFi instead?! That's crazy!
I contacted Google store support team and they have been really helpful so far. They offered to replace the phone with a refurbished unit, but I don't think I am ready to give up on this phone just yet.
Thank you!

waelalzubieri said:
Hello everyone!
So I have been having these battery issues since April security patch. the phone gets really warm to the touch even by doing the simplest of things like browsing and watching youtube. Android OS keeps the phone awake 80% of the time and I am only getting 2-3 hours of use throughout the day. Restored the phone to factory settings(fresh start, nothing restored) three days ago and still the same issue. Android OS drains the battery life even though I made sure that only google apps are installed on the phone.
But today things got even weirder. I disabled Google Now and location services as a test and the battery drain and heat issues were gone temporarily. I was getting a great battery performance from morning to afternoon. I check my battery stats and I notice that Google services mysteriously drained 17% of my battery life and that it's been running for 21 days straight? That's impossible since I just did a fresh reset to the phone three days ago. I rebooted the phone and that "Google services" drain changed to WiFi instead?! That's crazy!
I contacted Google store support team and they have been really helpful so far. They offered to replace the phone with a refurbished unit, but I don't think I am ready to give up on this phone just yet.
Thank you!
Click to expand...
Click to collapse
I hate to recommend this, but sometimes things go out of wack after a SW update, so a hard reset would probably be needed. I would try that (just start from zero) before jumping into a refurbished phone that might have some other kind of issues. Have you tried a hard reset yet? I see that you did a fresh reset. Did you go through the recovery though? Not just the regular UI. I think it's better to clear cache, and every thing through the recovery (custom or stock).

en28so said:
I hate to recommend this, but sometimes things go out of wack after a SW update, so a hard reset would probably be needed. I would try that (just start from zero) before jumping into a refurbished phone that might have some other kind of issues. Have you tried a hard reset yet? I see that you did a fresh reset. Did you go through the recovery though? Not just the regular UI. I think it's better to clear cache, and every thing through the recovery (custom or stock).
Click to expand...
Click to collapse
I did it through recovery. I have cleared the cache and rebooted the phone several times the past few days. Nothing seems to help at all.

Turn off your google backup.
Sent from my Nexus 6 using Tapatalk

waelalzubieri said:
I did it through recovery. I have cleared the cache and rebooted the phone several times the past few days. Nothing seems to help at all.
Click to expand...
Click to collapse
Wow. Maybe a custom ROM might help? Have you tried that? That's the last thing I would do. Good luck!

Not recommended but I just flashed January vendor and ROM and that has helped my battery life. I. Believe it is the security updates that kill our battery.

shawn1482 said:
Not recommended but I just flashed January vendor and ROM and that has helped my battery life. I. Believe it is the security updates that kill our battery.
Click to expand...
Click to collapse
Is it a widespread issue? Like I said in my post, I saw the decline ever since I got the April security update. The May patch actually managed to make things worse. There seems to be something hidden in the OS that it's draining the battery and causing the awake issues. I haven't tried rooting the device because I lack the experience to do so. I will probably look into it on these forums, but at this point I have tried everything.
Disabling Google now helped a lot and it exposed some sort of a glitch with the stock battery monitoring app. I am not sure if it's hardware or software, but it's certainly not normal. I am tempted to just replace it, but I am afraid that this issue will just plague the new one from Google. I am really disappointed How Google handles updates on this device. I always thought that stock android is most stable version of android, but the software on my old Xperia Z is actually more stable than this. It never had battery drain issues and standby battery life was always great. The battery life on Nexus 6P is actually worse than the Xperia Z even though that phone is 3 years old.

waelalzubieri said:
Is it a widespread issue? Like I said in my post, I saw the decline ever since I got the April security update. The May patch actually managed to make things worse. There seems to be something hidden in the OS that it's draining the battery and causing the awake issues. I haven't tried rooting the device because I lack the experience to do so. I will probably look into it on these forums, but at this point I have tried everything.
Disabling Google now helped a lot and it exposed some sort of a glitch with the stock battery monitoring app. I am not sure if it's hardware or software, but it's certainly not normal. I am tempted to just replace it, but I am afraid that this issue will just plague the new one from Google. I am really disappointed How Google handles updates on this device. I always thought that stock android is most stable version of android, but the software on my old Xperia Z is actually more stable than this. It never had battery drain issues and standby battery life was always great. The battery life on Nexus 6P is actually worse than the Xperia Z even though that phone is 3 years old.
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Click to collapse
I've seen a lot of posts over the months with people having the same problem we are. I came from a mid range LG stylo with a snapdragon 610. I would have 8 hours screen on time daily. Its sad that goggle cant get the same out of their own hardware. Also I have seen that the Note 5 and S7 Edge both get better battery life as opposed to our stock phones. For as much as people praise stock and look down on Touchwiz, they are doing something right over there.

But it doesn't affect everyone and that what puzzles me. Only certain phones are hit by these issues, while other people are getting excellent battery life. I have seen plenty of people post screenshots of 6 hours+ of on screen time. I am lucky to get 3 hours. I think Google should really invest in creating a better power management system into Android. Companies like Sony and Samsung built their own and the battery life on their devices always perform predictably relative to what I am seeing on this phone. I have never witnessed The doze feature kick in since I have bought this phone. Sony had stamina mode since 2013 and it actually worked.

waelalzubieri said:
But it doesn't affect everyone and that what puzzles me. Only certain phones are hit by these issues, while other people are getting excellent battery life. I have seen plenty of people post screenshots of 6 hours+ of on screen time. I am lucky to get 3 hours. I think Google should really invest in creating a better power management system into Android. Companies like Sony and Samsung built their own and the battery life on their devices always perform predictably relative to what I am seeing on this phone. I have never witnessed The doze feature kick in since I have bought this phone. Sony had stamina mode since 2013 and it actually worked.
Click to expand...
Click to collapse
Most of those people posting those outrageous number root and do kernel tweaks. I've gotten at most 6 hours SOT on stock without root. You are right our phones do all react differently to certain circumstances. I don't know if it's feasible to you ,but you should try rooting and trying out a few Roms some help others don't. If you aren't into Roms and decide to root try earlier vendors and stock roms and see it those work. I'm not an expert by any means just my suggestions.

shawn1482 said:
Most of those people posting those outrageous number root and do kernel tweaks. I've gotten at most 6 hours SOT on stock without root. You are right our phones do all react differently to certain circumstances. I don't know if it's feasible to you ,but you should try rooting and trying out a few Roms some help others don't. If you aren't into Roms and decide to root try earlier vendors and stock roms and see it those work. I'm not an expert by any means just my suggestions.
Click to expand...
Click to collapse
Well, the fact that you are having great battery life proves my point. It's either that the quality control of the batteries used on these phones are terrible, or that the software or kernel are corrupted from factory causing these issues. There is no way to fix them by hard reseting the phone so far. I am going to try to flash a stock rom on this device and see what happens. Thanks by the way.

1) Are you rooted? If not, at least do that and install BBS in order to track down what's eating your battery.
2) Probably we'll run into a common problem / bug the last two months.
After unplugging the phone, it seems that the wakelock *backup* runs constantly, does not let phone get into sleep, and runs in the background while using your phone causin battery to drain faster.
3) About battery life. Comparing battery results between two users it has no point, unless you really now his usage pattern. Not only the setup, but which apps of them used most etc.
For example Facebook app is real battery eater. I've seen an hour more SOT without this app.
I can give several examples like this.
Sent from my Nexus 6P using Tapatalk

Battery and other things.

Hi.
So I bought S7E in September. I noticed a smudge on the screen. I sent it in for repair. They repaired screen AND battery AND usb connector, although the only thing wrong with the phone was screen. They also wrote that they updated the software (I checked and I have android 6.0.1).
So yestrday I got the phone back. Plug it in the recharger and restored it with the back up I made and played with it while it was charging so that I could fully adjust it like it was before.
Than I went into battery settings and it said "Learning usage patterns..." And I was like "okay, you do that"
This morning I woke up checked if it is till learning usage patterns and it is not. BUT it says that the "Estimated usage time remaining is 10 hours".
Now I found that a bit odd and bit low, especially since its a new battery. Before I sent the phone for repair I had like 22-24 hours of estimated usage time when it was on 100%.
I also noticed that most of time my smart manager says the phone has 75% RAM in use. So only 1 gb free. I think that before I sent it there it wasnt like that.
So any suggestions, ideas or anything guys?
I also attached some screenshots

Your battery life seems okay. Check how many hours SOT You get. Take a screenshot of screen battery usage when You have around 10-20% or just say how many hours You got. With a custom rom I get usually around 4-5 hours at most, but with a stock rom 6-7 hours. And on my device I have 1.2GB of free ram and after cleaning ram I get 1.7GB.

Your first estimation is going to be low especially after a new update. Give it a day or two . And don't clean your ram too often because it will get reopened again . (waste of battery ) . Your android system is using alot tho but thats normal for newer software.

Give it time to settle down a bit It will get better

So far it's been over 4 hours SOT on my device and I still have 50%. 8 hour SOT? COOOOOL! That's why I chose S7 Edge . Let Your device learn usage patterns. It really works! After 2-4 days Your battery life will be better than ever

Okay. I made some screenshots.
I dont know either why System Android is using that much.
Anywayw today I was mostly on FB and 9GAG. I am ill, meaning home in bed. So I didnt really watch videos or talk on phone to much (maybe 3 or 4 calls).
Yeah. I hope it will learn my usage patterns and that will be it. Because sending it back to that company that repairs samsung here in my country is really the worst. Like they are retarded or something...
Will it also get less laggy with time? Because I remember that before I sent it there, it ran a bit smoother. Now sometimes when scrolling through this forum or facebook its a bit laggy... I know it wasnt before.. Is that also something that the phone needs to learn and adjust after few days? Or should I factory reset it, just to be sure?

KavaBreskva said:
Okay. I made some screenshots.
I dont know either why System Android is using that much.
Anywayw today I was mostly on FB and 9GAG. I am ill, meaning home in bed. So I didnt really watch videos or talk on phone to much (maybe 3 or 4 calls).
Yeah. I hope it will learn my usage patterns and that will be it. Because sending it back to that company that repairs samsung here in my country is really the worst. Like they are retarded or something...
Will it also get less laggy with time? Because I remember that before I sent it there, it ran a bit smoother. Now sometimes when scrolling through this forum or facebook its a bit laggy... I know it wasnt before.. Is that also something that the phone needs to learn and adjust after few days? Or should I factory reset it, just to be sure?
Click to expand...
Click to collapse
Your sot isnt too bad for a new firmware. Atleast you can get around 6 hrs sot. Your lagg prolly wont adjust and i am not sure why your device is lagging at all. Give it a few more days. Just hope nougat will fix your problems and ours.

Well before repair I sometime got like 4 hrs SOT, sometime 5, sometimes 6, sometimes even 7. It really depends on what I am doing on the phone.
Well its not that laggy but I remember it wasnt as much before.
Do you maybe know when nougat is coming for s7e?

ProtoDeVNan0 said:
So far it's been over 4 hours SOT on my device and I still have 50%. 8 hour SOT? COOOOOL! That's why I chose S7 Edge . Let Your device learn usage patterns. It really works! After 2-4 days Your battery life will be better than ever
Click to expand...
Click to collapse
How can you activate this 'learn usuage patterns'? Is it in your battery settings? Could you please help?

KavaBreskva said:
Well before repair I sometime got like 4 hrs SOT, sometime 5, sometimes 6, sometimes even 7. It really depends on what I am doing on the phone.
Well its not that laggy but I remember it wasnt as much before.
Do you maybe know when nougat is coming for s7e?
Click to expand...
Click to collapse
Today.
lamboram said:
How can you activate this 'learn usuage patterns'? Is it in your battery settings? Could you please help?
Click to expand...
Click to collapse
It happens automatically when You flash a fresh rom. (Factory reset).

KavaBreskva said:
Well before repair I sometime got like 4 hrs SOT, sometime 5, sometimes 6, sometimes even 7. It really depends on what I am doing on the phone.
Well its not that laggy but I remember it wasnt as much before.
Do you maybe know when nougat is coming for s7e?
Click to expand...
Click to collapse
The beta program is around the corner, its only a matter of time before it reaches out publicly. My advice to you is to turn off fast charge because for me its around 3-5 c less heat and it is only 20 minutes slower .

ProtoDeVNan0 said:
Today.
It happens automatically when You flash a fresh rom. (Factory reset).
Click to expand...
Click to collapse
Hi, I'm experiencing the same problem the OP is. When I do a factory reset it's not saying "learning usage patterns" as my old phone did. Can you tell me why? thanks.

Idle Battery Drain

Hi All,
From Past 2 weeks... am Facing Phone Idle Battery Drain...
I have tried everything.... - Factory Resetting, etc....
The problem even persist in Safe Mode also...
Is it a Hardware issue ? or A Clean system Reflash might help ?
PS: My phone is not rooted.

For me after I'm uninstalling the snaptube, all it's turns normal... Maybe you use some app has draining your battery ?(software)
Sent from my LG-H870DS using Tapatalk

Deci M said:
For me after I'm uninstalling the snaptube, all it's turns normal... Maybe you use some app has draining your battery ?(software)
Click to expand...
Click to collapse
I also thought the same...But I didn't install any new apps other than Pixel Launcher.... And Now...I Uninstalled it.... Still facing the same problem.

I guess it is just the horrible LG software. I also experienced extreme battery drain in standby and could not figure out why.
I decided to flash the Resurrection Remix ROM onto my LG and look at that... Amazing battery life with the same usage and same apps installed.
My battery now drops 2% over night. With stock it was 9-10%.
I know it might not be the answer you are looking for. All I am saying is: maybe the Oreo update will help for Stock solutions.
There are reports out there that show amazing battery life with stock but they often disable a lot of services which in my eyes is not the purpose of a phone. Other than that... Try your luck with Greenify or something like that (could be hard to reach real results here without root though).

Schlengge said:
I guess it is just the horrible LG software. I also experienced extreme battery drain in standby and could not figure out why.
I decided to flash the Resurrection Remix ROM onto my LG and look at that... Amazing battery life with the same usage and same apps installed.
My battery now drops 2% over night. With stock it was 9-10%.
I know it might not be the answer you are looking for. All I am saying is: maybe the Oreo update will help for Stock solutions.
There are reports out there that show amazing battery life with stock but they often disable a lot of services which in my eyes is not the purpose of a phone. Other than that... Try your luck with Greenify or something like that (could be hard to reach real results here without root though).
Click to expand...
Click to collapse
Hmm.... But I hav paid 760$ to buy this phone.... Why Should I settle for less ? If its a budget phone...then Ok...but this is a Flagship Device.... I am going to take this to Service Center. These Battey Problems are irritating me.

As far as I remember, that idle battery drain is known issue in Android 7.0 and our precious G6's have 7.0 and probably will never get 7.1 which has this problem fixed, LG rarely releases incremental updates, mostly only releases new devices with newer software (V30 has 7.1, Q6 also has 7.1 and their battery life is great).
7.0 bug causes "Phone Idle" thingy popping up in battery stats almost always on top, sucking up to 1000+mAh of battery in my case so I have to charge the phone almost every single day which is a little bit frustrating considering phone's battery and that it lies unused for around 8 hours every day as I have to leave my phone in locker room when I'm at work. This is the only thing that I hate in this phone.
We have to wait for Oreo... which also makes me a little bit nervous because 8.0 also has many bugs... Yes, 8.1 is right behind the corner but that strange LG update policy will probably halt our phones on 8.0...

wilsondrake said:
Being able to have numerous apps for different purposes downloaded on your phone is what makes our smartphones so good. However, there may be a few that are resulting in rapid Android OS battery drain., without you even knowing about it.
Try These
Stay in Power Saving Mode
Reduce Display light
Try using the App Greenify, helps you identify which apps are causing battery drain, and put these into hibernation when you are not using them, to stop them from lagging your device and leeching the battery
Click to expand...
Click to collapse
Tried all.... Sadly...no improvement

wilsondrake said:
mmmm well try to change your phone then because these battery issues are really a pain in the a**
Click to expand...
Click to collapse
Not so soon

romcio47 said:
As far as I remember, that idle battery drain is known issue in Android 7.0 and our precious G6's have 7.0 and probably will never get 7.1 which has this problem fixed, LG rarely releases incremental updates, mostly only releases new devices with newer software (V30 has 7.1, Q6 also has 7.1 and their battery life is great).
7.0 bug causes "Phone Idle" thingy popping up in battery stats almost always on top, sucking up to 1000+mAh of battery in my case so I have to charge the phone almost every single day which is a little bit frustrating considering phone's battery and that it lies unused for around 8 hours every day as I have to leave my phone in locker room when I'm at work. This is the only thing that I hate in this phone.
We have to wait for Oreo... which also makes me a little bit nervous because 8.0 also has many bugs... Yes, 8.1 is right behind the corner but that strange LG update policy will probably halt our phones on 8.0...
Click to expand...
Click to collapse
Actually....Just got a October Security Update... Le me try this update...

romcio47 said:
As far as I remember, that idle battery drain is known issue in Android 7.0 and our precious G6's have 7.0 and probably will never get 7.1 which has this problem fixed, LG rarely releases incremental updates, mostly only releases new devices with newer software (V30 has 7.1, Q6 also has 7.1 and their battery life is great).
7.0 bug causes "Phone Idle" thingy popping up in battery stats almost always on top, sucking up to 1000+mAh of battery in my case so I have to charge the phone almost every single day which is a little bit frustrating considering phone's battery and that it lies unused for around 8 hours every day as I have to leave my phone in locker room when I'm at work. This is the only thing that I hate in this phone.
We have to wait for Oreo... which also makes me a little bit nervous because 8.0 also has many bugs... Yes, 8.1 is right behind the corner but that strange LG update policy will probably halt our phones on 8.0...
Click to expand...
Click to collapse
Actually...Just got October Security Update... Will try this and report...

Sorry to burst your bubble early, but October Security Update won't change a thing. I've had it for a while and phone idle is still on top of my list for battery draining.
*fingers crossed for Oreo to fix this "bug"*

pony182 said:
Sorry to burst your bubble early, but October Security Update won't change a thing. I've had it for a while and phone idle is still on top of my list for battery draining.
*fingers crossed for Oreo to fix this "bug"*
Click to expand...
Click to collapse
same here.... Oreo is the only way ???

same issues, the top battery draining is idle.. soo damn frustrated. and there no chance tochange to a rom without unlocked bootlocker right ? Because im not able to unlock it .

Croize said:
same issues, the top battery draining is idle.. soo damn frustrated. and there no chance tochange to a rom without unlocked bootlocker right ? Because im not able to unlock it .
Click to expand...
Click to collapse
I think we can Unlock BL...but I don't want to unlock untill Oreo update....

still high idle... but lessa then a day or two ago, maybe correct itself, i dont wanna root because of this. My days with those kinds of tweaking is over

i think its gettiing better for me, altough standby is insane still, over 25 hrs

Croize said:
still high idle... but lessa then a day or two ago, maybe correct itself, i dont wanna root because of this. My days with those kinds of tweaking is over
Click to expand...
Click to collapse
Wow...you are getting 4hrs SOT in 36% of battery.... I get 4hrs at 2 or 3% of battery only... Yours seems better.... I will post my results today

My Stats....
I just feel... Phone Idle is draining too much battery?

[email protected] said:
My Stats....
I just feel... Phone Idle is draining too much battery?
Click to expand...
Click to collapse
damn :/

Wow, very bad score....
My phone keep to 72h in idle, juts normal use, few calls i day, bit 3g+, nothing bizare. I'm very happy with it

Where's my battery going?! (Phone won't sleep?!)

HELP!!!
I picked up an H918 for my wife to use on T-mobile USA. Since it was used, I also got one of the extended life 4100Mah batteries to hopefully make it last at least the entire day without topping off the charge. She usually averages around 4 - 5 hour SOT, so this seemed like a good option from what I've read, and fits in the original door so I can use the wallet case she wants with it.
But man, her battery life is TERRIBLE! I checked with Accubattery, and it reports that the battery is charging within 99% of it's 4100mah spec, so I don't think its a bad battery. Yet, she can barely go 12 hours with just under 2 hours SOT before the phone dies!
She is unrooted, running stock Oreo.
I installed GSam Battery Monitor and used their ADB commands to give it permission to record deep statistics w/out root (pretty cool, never did that before). I ran it for a little while this morning. Within 3 hours 40 minutes off the charger, she was already down to 72% with barely any SOT. I'm attaching screenshots of the app usage and doze screen (sorry for the phone-snapped-of-phone picture, it's my wifes phone like I said, so it was easier to just snap with my camera than take a screenshot and send it to myself to post).
Maybe I'm not reading this right, but it seems like something is keeping her phone from sleeping. A big culprit seems to be call services, and in my location settings, I noticed it mention that LG IMS was doing a lot of heavy battery drain with location related inquiries.
I thought maybe it was related to WiFi calling, so I turned that off. Cell reception is average.
2 hours later, she's down to 50% so that wasn't it. I don't know what else to try other than hard reset, but we literally just got this and set it up 2 days ago, and its been like this from day one. I don't see why it would be any different the second time around.

It's likely a junk battery. It's really hard to get a good oem replacement battery.
If you shop Amazon look for a Taeozi 4200 or Shemnz 4200. They both have 2 year warranty and decent reviews here on XDA
The Perfine 4100 is also highly recommend
Any Li-polymer should be better
Sent from my ONEPLUS A6010 using Tapatalk

When I bought my wife's phone it had a battery drain/overheat and wakelock issue as well. I fixed it and haven't had an issue since. Here's what I did to fix it:
https://forum.xda-developers.com/v20/help/absolutely-terrible-battery-life-t3531456/post78654160

clsA said:
It's likely a junk battery. It's really hard to get a good oem replacement battery.
If you shop Amazon look for a Taeozi 4200 or Shemnz 4200. They both have 2 year warranty and decent reviews here on XDA
The Perfine 4100 is also highly recommend
Any Li-polymer should be better
Sent from my ONEPLUS A6010 using Tapatalk
Click to expand...
Click to collapse
I did my homework first and got the Perfine from Amazon, not a no-name junk battery. When I couldn't fit it without removing the sticker, the seller was really helpful and actually offered to replace it after checking first that it fit in *THEIR* V20 at the factory. Really solid customer support. And according to Accubattery, it really is the capacity it says. Or at least within 99% of it (I think it estimated 4080 or something like that). So I don't think that's the issue.
pistacios said:
When I bought my wife's phone it had a battery drain/overheat and wakelock issue as well. I fixed it and haven't had an issue since. Here's what I did to fix it:
https://forum.xda-developers.com/v20/help/absolutely-terrible-battery-life-t3531456/post78654160
Click to expand...
Click to collapse
That's actually really interesting- I did take apart the phone to do the thermal mod thing (wiped off the dried up pink gunk and put a thermal pad there), but it seemed pretty clean otherwise inside when I did. How on earth did you figure out that was the problem?
After speaking with some folks on Telegram, Reddit, and other corners of the internet, I have a different theory. A bunch of people told me to let the rom "settle", that battery life is never good after a fresh format or new rom flash. Honestly, the critical thinker in me says that sounds like nonsense. I've never heard of this before and I've been flashing roms for the better half of a decade. I'd think after it takes the time the load up your apps and settings and configure itself, it would be done. But I Googled it, and it seems to be a hotly debated subject.
Those that swear by it claim that whenever you start fresh or flash a new rom, it takes anywhere from one to a few battery cycles before the kernel calms down. Perhaps it is doing some sort of internal calibration based on your battery life and system demands or something like that. The theory seems to be that the Kernel doesn't allow the CPU to fully doze until it is done with this process, which sometimes takes days. I don't know, but the more I read about it, the more it sort of started sound plausible. When I got the phone, I tried out some things on it myself without a SIM card first, just to make sure everything on it checked out before giving it to the wife. Then, I did a hard reset, popped in her SIM card and let it do its thing. That's when we realized battery life was pretty terrible, as after 10-12 hours she already needed to charge... and this was on the 4100mah perfine!
I tried another hard reset, and when that didn't fix it, I decided it was time to root and see if I could get to the bottom of the bad battery. It seemed the kernel was where a lot of it currently went according to battery stat apps. After downgrading my H918 to Nougat so I could install TWRP, I promptly flashed Alpha Omega Oreo 20H and restored her apps. Turns out the next morning we couldn't sync her smartwatch, somehow we broke bluetooth (going into BT settings would crash the phone everytime). So weird, and while we were at it the battery life still wasn't great. So I did a hard reset that evening and found that even with nothing installed, BT was borked. (looking back at it, I think I should have flashed an Oreo rom like the stock 20H rooted first, and THEN the AO rom. I think going straight from nougat might have led to a driver mismatch or something)
Anyway, after that didn't work I flashed the stock rooted 20H rom, and lo and behold bluetooth and everything else is working again! But the battery has been bad all along and is still doing its generally suckiness thing.
BUT... as someone pointed out, if this kernel settle thing is real, I've been pretty much flashing and resetting this thing every other day. If roms need to "settle" first (still a debatable subject), than I never really gave it a chance yet and that's why I'm constantly seeing battery drain from things like Kernel even on different roms! And @pistacios, is it possible that you were having a kernel do the same thing since it was just reset and it just so happened to be that when it calibrated itself you thought you had fixed it by cleaning out the USB port?
All I know is I'm going to give this a couple of days before deciding on a plan B. Seems too simple to be the reason, but hey- I'm desperate.

Dishe said:
I did my homework first and got the Perfine from Amazon, not a no-name junk battery. When I couldn't fit it without removing the sticker, the seller was really helpful and actually offered to replace it after checking first that it fit in *THEIR* V20 at the factory. Really solid customer support. And according to Accubattery, it really is the capacity it says. Or at least within 99% of it (I think it estimated 4080 or something like that). So I don't think that's the issue.
That's actually really interesting- I did take apart the phone to do the thermal mod thing (wiped off the dried up pink gunk and put a thermal pad there), but it seemed pretty clean otherwise inside when I did. How on earth did you figure out that was the problem?
After speaking with some folks on Telegram, Reddit, and other corners of the internet, I have a different theory. A bunch of people told me to let the rom "settle", that battery life is never good after a fresh format or new rom flash. Honestly, the critical thinker in me says that sounds like nonsense. I've never heard of this before and I've been flashing roms for the better half of a decade. I'd think after it takes the time the load up your apps and settings and configure itself, it would be done. But I Googled it, and it seems to be a hotly debated subject.
Those that swear by it claim that whenever you start fresh or flash a new rom, it takes anywhere from one to a few battery cycles before the kernel calms down. Perhaps it is doing some sort of internal calibration based on your battery life and system demands or something like that. The theory seems to be that the Kernel doesn't allow the CPU to fully doze until it is done with this process, which sometimes takes days. I don't know, but the more I read about it, the more it sort of started sound plausible. When I got the phone, I tried out some things on it myself without a SIM card first, just to make sure everything on it checked out before giving it to the wife. Then, I did a hard reset, popped in her SIM card and let it do its thing. That's when we realized battery life was pretty terrible, as after 10-12 hours she already needed to charge... and this was on the 4100mah perfine!
I tried another hard reset, and when that didn't fix it, I decided it was time to root and see if I could get to the bottom of the bad battery. It seemed the kernel was where a lot of it currently went according to battery stat apps. After downgrading my H918 to Nougat so I could install TWRP, I promptly flashed Alpha Omega Oreo 20H and restored her apps. Turns out the next morning we couldn't sync her smartwatch, somehow we broke bluetooth (going into BT settings would crash the phone everytime). So weird, and while we were at it the battery life still wasn't great. So I did a hard reset that evening and found that even with nothing installed, BT was borked. (looking back at it, I think I should have flashed an Oreo rom like the stock 20H rooted first, and THEN the AO rom. I think going straight from nougat might have led to a driver mismatch or something)
Anyway, after that didn't work I flashed the stock rooted 20H rom, and lo and behold bluetooth and everything else is working again! But the battery has been bad all along and is still doing its generally suckiness thing.
BUT... as someone pointed out, if this kernel settle thing is real, I've been pretty much flashing and resetting this thing every other day. If roms need to "settle" first (still a debatable subject), than I never really gave it a chance yet and that's why I'm constantly seeing battery drain from things like Kernel even on different roms! And @pistacios, is it possible that you were having a kernel do the same thing since it was just reset and it just so happened to be that when it calibrated itself you thought you had fixed it by cleaning out the USB port?
All I know is I'm going to give this a couple of days before deciding on a plan B. Seems too simple to be the reason, but hey- I'm desperate.
Click to expand...
Click to collapse
Ive experienced ROMs settling in and battery stabilizing after a few days. But this was pretty far back with the HTC M7 and M8. Most modern phone's I've flashed pretty well settled in within the first few hours. The battery life on this phone was never amazing. It was good to just Ok for most when it was new.
If you flashed the stock rooted rom and still had bad battery life, I still suspect the battery itself. I still recommend one of the battery I listed earlier. If the perfine didn't work out try a different one.
Sent from my ONEPLUS A6010 using Tapatalk

clsA said:
Ive experienced ROMs settling in and battery stabilizing after a few days. But this was pretty far back with the HTC M7 and M8. Most modern phone's I've flashed pretty well settled in within the first few hours. The battery life on this phone was never amazing. It was good to just Ok for most when it was new.
Click to expand...
Click to collapse
Right, with the stock 3200mah battery. With the Perfine 4100, a lot of reports are saying 6-7 hours SOT or at least a full day of regular use. That's good enough, really. Mine is dying at half of that. I'm wondering if I have faulty hardware. I could put the stock battery back in and see if it dies much sooner.
I'm actually wondering if someone can check their mA use per hour with the screen on vs off, and I can see if the numbers make sense on mine. Accubattery is pretty good at the math.

Dishe said:
.....
And @pistacios, is it possible that you were having a kernel do the same thing since it was just reset and it just so happened to be that when it calibrated itself you thought you had fixed it by cleaning out the USB port?
....,
Click to expand...
Click to collapse
Phone was up and running for 2 weeks, so it wasn't due to fresh reset.
GSAM battery monitor showed kennel wakelock, something about USB OTG in the top of the list, so I figured the port was my first check for a problem, and it was. It wasn't obvious that there was dirt or foreign matter in there, because it looked clean. But sure enough, after the light brushing with 94% alcohol, the problem disappeared.
I'm not saying this is definitely your problem, just throwing it out there.

S10+(SM-G975U1) battery life went bad

Does anyone know that is wrong with my phone?
the standby battery life off the chart
i can get close to 9h SOT stright no problem,but if i leave it on standby i can't even get 16hours out of it
no warm,hot or something like that
i thought it was the battery but it is still the same after replace the battery
i've try anything i can find on internet
1.Disable AOD
2.Reset network setting
3.airplane mode
4.factory reset
5.screen resolution
6.adaptive brightness,adaptive power saving
7.reflash firmware
8.replace new battery
9.switch it off for 24hours(not even lose 1%)
i'm ran out of idea now
if anybody know what wrong with this phone please help me
sorry for my english ><

You might need to take it somewhere and have a tech look at it or contact Samsung on it or claim warranty with Samsung.

See if it does it in safe mode.
Probably a rogue apk(s)... a software issue.

okay i'm going to give a try on safe mode

it's still there losing a about 15% over 5 hours on idle.

Same on my note 10. Battery live just went bad over nigh, exactly 1 year after I bough the phone. So I guess this is build in to make us upgrade to the next gen phone. I won't even waste my money to replace the battery because I know it won't make any difference. Typical $am$ung

zackyo said:
it's still there losing a about 15% over 5 hours on idle.
Click to expand...
Click to collapse
I'm running on Pie with a 10+ so you may have different issues/solutions. One of the big reasons I never upgrade; I have this phone optimized, it's fast, stable, reasonably secure and I like it. Took a lot of time to get to this point.
Lol, I'm still happily running W7x64
Probably a Google apk; Backup Transport*, Google Services Framework and Google Play Services are known offenders.
Try clearing their data.
I package block the first 2 and use Karma Firewall to block GP Services except when I need it for gmail or gmaps.
In Developer options look at running services.
Also in the same look at Standby apps; all buckets should show as active. If not then power management** is active, disable all power management; Android will manage it's self nicely.
Enable only the "Optimized" option for display/cpu and fast charging in Device Care.
Use the factory load version of Device Care if on Pie. Firewall block it though after which use it's system cache cleaner.
Download Galaxy Labs Battery Tracker from the Galaxy store.
Download Karma Firewall from Playstore.
Consider using this: https://www.packagedisabler.com/
*turning off backup Transport in goggle settings doesn't stop it and Framework is a dependency of the former I think. It needs blocked too and will still show as running but at a very reduce amount.
Occasionally even when blocked all 3 need their data cleared to stop excessive battery usage.
**track down the roque apks one by one and deal with them without using power management options.

Burllz said:
Same on my note 10. Battery live just went bad over nigh, exactly 1 year after I bough the phone. So I guess this is build in to make us upgrade to the next gen phone. I won't even waste my money to replace the battery because I know it won't make any difference. Typical $am$ung
Click to expand...
Click to collapse
i completely agree with you
there no point replacing the battery like i did
Li-Ion/Li-Poly can't go bad in just 1 night unless it blow up or something
even my previous note 5 battery can take charge day in day out for over 3years without needing a new battery.

blackhawk said:
I'm running on Pie with a 10+ so you may have different issues/solutions. One of the big reasons I never upgrade; I have this phone optimized, it's fast, stable, reasonably secure and I like it. Took a lot of time to get to this point.
Lol, I'm still happily running W7x64
Probably a Google apk; Backup Transport*, Google Services Framework and Google Play Services are known offenders.
Try clearing their data.
I package block the first 2 and use Karma Firewall to block GP Services except when I need it for gmail or gmaps.
*turning off backup Transport in goggle settings doesn't stop it and Framework is a dependency of the former I think. It needs blocked too and will still show as running but at a very reduce amount.
Occasionally even when blocked all 3 need their data cleared to stop excessive battery usage.
Click to expand...
Click to collapse
i wish i can downgrade it back to pie and stay there like you did,but now i'm stuck with Bit 4 firmware can't even roll it back to OneUi 2.1
now i'm going to give a try to disable those stuff like you said xD

Burllz said:
Same on my note 10. Battery live just went bad over nigh, exactly 1 year after I bough the phone. So I guess this is build in to make us upgrade to the next gen phone. I won't even waste my money to replace the battery because I know it won't make any difference. Typical $am$ung
Click to expand...
Click to collapse
Avoid charging to 100%
Avoid draining below 30%
Never charge battery if temp is below 60F and especially if freezing or below.
Ideal charging start charging temp seems to be about 80-90F
Keep battery temp below 100F whenever possible.
Shut it down or cool it if battery reaches 105F when using it.
Li's like small frequent midrange charge cycles*.
I run between 40-65% normally and fast charge it 3 to 4 times a day.
A charge takes about 10-12 minutes.
I'm at over a year and not seeing any detectable deterioration yet.
*this can extend the battery life by hundreds even thousands of full charge cycles.

zackyo said:
i wish i can downgrade it back to pie and stay there like you did,but now i'm stuck with Bit 4 firmware can't even roll it back to OneUi 2.1
now i'm going to give a try to disable those stuff like you said xD
Click to expand...
Click to collapse
Live and learn. Play with it and sort it out.
You could always get it flashed back to the original firmware if worse comes to worst... hopefully that won't be necessary.

blackhawk said:
Avoid charging to 100%
Avoid draining below 30%
Never charge battery if temp is below 60F and especially if freezing or below.
Ideal charging start charging temp seems to be about 80-90F
Keep battery temp below 100F whenever possible.
Shut it down or cool it if battery reaches 105F when using it.
Li's like small frequent midrange charge cycles*.
I run between 40-65% normally and fast charge it 3 to 4 times a day.
A charge takes about 10-12 minutes.
I'm at over a year and not seeing any detectable deterioration yet.
*this can extend the battery life by hundreds even thousands of full charge cycles.
Click to expand...
Click to collapse
agree,this will reduce the stress on the battery except on Note4,that phone just keep asking for new battery every
6-12months no matter what i do.
for me personally i just use it as day in day out like most people do course i don't mind replacing the battery every 1-2 years as long it works the way it should,i mean not the way my S10+ does right now ><
blackhawk said:
Live and learn. Play with it and sort it out.
You could always get it flashed back to the original firmware if worse comes to worst... hopefully that won't be necessary.
Click to expand...
Click to collapse
i totally understand what you meant xD and yeah hopefully that won't be necessary.

zackyo said:
agree,this will reduce the stress on the battery except on Note4,that phone just keep asking for new battery every
6-12months no matter what i do.
for me personally i just use it as day in day out like most people do course i don't mind replacing the battery every 1-2 years as long it works the way it should,i mean not the way my S10+ does right now ><
Click to expand...
Click to collapse
I haven't been a saint with the 10+'a battery but the insults add up if you do it every day.
Likewise being conservative with the charging and temp parameters should too.
It will be interesting how long this battery lasts as I use the phone a lot.
Accubattery to spite it's faults is a good monitoring tool. It's charge reminder is handy and it's milliamp overlay has been useful.
It also logs charge/discharge milliamps and times which is probably the best battery indicator.

speaking of discharge rate,may i know whats your?
mine was like 100ma-150ma on idle off screen thats pretty high even compare to 3 years old device

zackyo said:
speaking of discharge rate,may i know whats your?
mine was like 100ma-150ma on idle off screen thats pretty high even compare to 3 years old device
Click to expand...
Click to collapse
Sounds normal even low for idle SOT...

blackhawk said:
Sounds normal even low for idle SOT...
Click to expand...
Click to collapse
okay noted thanks.
look like i'm going to dive deeper into this device then
not giving up on this beauty devices yet

zackyo said:
okay noted thanks.
look like i'm going to dive deeper into this device then
not giving up on this beauty devices yet
Click to expand...
Click to collapse
Disable Android updates. Only update after others have given feedback and you have more to gain than loss. Once you update you may well need to start this witch hunt all over.
Androids are fun to play with... go to it

noted,will do
do you recommended me to rollback to 1st 4 bin Nov firmware or just stick with current firmware?

zackyo said:
noted,will do
do you recommended me to rollback to 1st 4 bin Nov firmware or just stick with current firmware?
Click to expand...
Click to collapse
Depends what you want. If not sure, play with this one for a while.
I'm still running on Pie on my 10+ so I don't bother looking much at updates.
I'm not pleased with Q though so it's a no brainer to stay with Pie. At this point I have near zero issues, it's fast, stable, it does all I need it to do and runs the apps I use well.

zackyo said:
Does anyone know that is wrong with my phone?
the standby battery life off the chart
i can get close to 9h SOT stright no problem,but if i leave it on standby i can't even get 16hours out of it
no warm,hot or something like that
i thought it was the battery but it is still the same after replace the battery
i've try anything i can find on internet
1.Disable AOD
2.Reset network setting
3.airplane mode
4.factory reset
5.screen resolution
6.adaptive brightness,adaptive power saving
7.reflash firmware
8.replace new battery
9.switch it off for 24hours(not even lose 1%)
i'm ran out of idea now
if anybody know what wrong with this phone please help me
sorry for my english ><
Click to expand...
Click to collapse
Dial *#0228# in telephone app , and a advanced-looking app will pop up, click on quick start, neglect any warning messages.