Develop Bugs

[Q] Instant battery drops

Im getting some weird battery stuff, as well as the Android OS drain. If I restart my phone, once in a while It drops like 20-30%. i'll go from 46% to like 18%. I see the threads about slow draining, but mine seems to happen instantly sometimes (3 different times so far in a week), anyone have solutions? Got it from someone on ebay, can I still/should I RMA?

Someone posted a kernel fix in the international GSII forum, so we're either waiting for that to get ported over here or wait for samsung to release a fix. I have that same bug too. What percent r u getting on the Android OS? Mine is usually in the 60's.

Yeah I saw that thread, and I saw the 2 things causing it. Waiting for that fix I guess, hopefully it solves the big battery drops as well as the small draining. Mines pretty high, 30-50% I believe, and then cell reception takes 10-20% with LOS

That's alot better than mine. Although, I don't have that LOS problem. I'm running stock atm. Are u on a custom rom?

Running Starburst 1.5, stock was better for no LOS. But I like the customization on Starburst. Hopefully by the end of this week the kernel we be ported over.

Most likely a problem with the battery level algo and not an actual battery charge drop. It's probably showing the correct value after the reboot.

Using battery spy I was using like 12%-15% per hour, not even doing anything. Saw online that formating the SD card might help, just did, and now im using .8% per hour. The hell, something was scanning the SD card or something. Much better now, hopefully itll last 10-20 hours instead of 6 hours.
edit: so it went back up again. At .8% it will last 2 days+, but since the events keep taking the CPU, its draining it. I got it down to 4-8% by taking the SD card out. At least it will last a little longer. Cant wait for the fix, this baby will last days after.

Damn that sucks. I just formatted my card too cuz I was running out of options. Keep us updated tho.

so I think media scanner is draining, I downloaded rescan media root from android market and before I was draining at 12% per hour, but when I disable it with the app, it goes down to 5-6%. Anyone else try? Maybe thats something thats draining.

Oh btw have u tried turning off wifi? It only drained 6% after being off the charger for 9 hours. I havent touched the phone during that time span tho. Android os still in the 50s btw.
Sent from my SPH-D710 using XDA App

These are my overnight stats when I was sleeping. It's usually worse when wifi is on.

manekineko said:
Most likely a problem with the battery level algo and not an actual battery charge drop. It's probably showing the correct value after the reboot.
Click to expand...
Click to collapse
this is almost definitely correct. battery doesn't drop 15-20% because of reboot...the reading is wrong. Battery drivers have been bad on a few of the latest android phones. Just look at when your phone stays at 99% for the first 3 hrs of use each day...what, does it just get really inefficient in the afternoon because of food coma from lunch?

toprock23 said:
Oh btw have u tried turning off wifi? It only drained 6% after being off the charger for 9 hours. I havent touched the phone during that time span tho. Android os still in the 50s btw.
Sent from my SPH-D710 using XDA App
Click to expand...
Click to collapse
Trying now, seems to be charging faster too. I was mainly on wifi because cell standby was really high, keep getting LOS. But maybe I wont with wifi off now, and i'll see how battery does. ill keep you updated.

Still bad. Can only wait for the patches/fixes. 8 hours doing nothing almost. Sigh.
edit: sent to the galaxy support on twitter, see how that goes.
http://twitter.com/#!/GalaxySsupport/status/124174089085652992

Hey man, I got one more tweak for u to try. I just rooted my phone w/ the latest zenomax kernel and Starburst 1.5. Download setcpu and create a profile for "screen off". Set it to 200-500mhz on demand. In theory, this should prevent 100% cpu utilization while the screen is off. I'm testing this myself atm, so I can't give u my battery stats yet.

toprock23 said:
Hey man, I got one more tweak for u to try. I just rooted my phone w/ the latest zenomax kernel and Starburst 1.5. Download setcpu and create a profile for "screen off". Set it to 200-500mhz on demand. In theory, this should prevent 100% cpu utilization while the screen is off. I'm testing this myself atm, so I can't give u my battery stats yet.
Click to expand...
Click to collapse
Think I have the v3 version and 1.5 as well. I have setcpu set to 200-400 powersave. ive tried others and same. Suspend and events/0 keeping eating at the CPU. Thanks for the suggestions though.

figured i'd chime in here. i've had days where the battery was fine and days where the battery was absolute trash. it's happened on stock, and it's happened on root. but it almost always seems to coincide with LOS. the first picture is one of several instances where i've had pretty fast drain followed up by an instant dump in charge under normal use. it's strange how after the drop, it slowly works back up then levels off and drains normally. the 2nd pic is from today. i left my phone at home on accident when i went off to work, and when i returned, i had LOS and this battery stat. you can tell where i lost signal . the last pic is from yesterday while i had the phone at work all day and light use; a nice consistent drain.

FU battery drops and FML
Ok so i read all the posts in this thread and i understand theres a issue that effects the phone from even knowing what the battery % is. i had to post these though. i was at 47% then rebooted my phone. phone boots up and yehhh! woop woop 8% now mind you if you look at the graph it shows a nice constant cerve downward but steady because i was using my phone the entire time. now after the restart/batery drop of 40% i kept using the phone constantly but its funny how it took me over a hour of screen on to go from 8% to 5% !!!!! i bet to get from 5% to 1% it will take 2 more hours for sure. you can see the graph start to flatten out like its a super battery after the 40% drop because it didnt really drop to 8% !!! normally i wouldnt care since my phone battery last just as long, it just goes down really slow from 8%-1% but at 5% it auto dims screen and wont let me use my camera for the next 2-3 hours while i knock off the remaining "4%" of battery left. fml

Get Starburst v1.6. He removed DRM processes which should lower Android OS usage and thus battery draining. Plus with the LoStKernel, I haven't had any issues with losing signal since.
Also, use Titanium backup to remove running services that you don't need. I got rid of the stock email client, digital clock, media/social hub if you don't use those. They don't take up a lot of ram, but every little bit helps.
My battery life has improved after battery calibration. I suggest you calibrate if you didn't already so your battery usage graph may be more accurate. Hope this helps.

Thanks for the tips! I was wondering how you would calibrate the battery. Is it the same as wiping battery stats from CWM?

Huge battery drain

.Hello everyone,
Just got my G3 about 3 days ago, and so far the battery is going really bad for me.THis phone would consume the whole battery in just 6.5 hrs!!
I used to have Xiaomi Mi4 before it and it would easily make it the whole day -some times +18hr- on the same usage connections.
I've tried different roms and kernels, limited the CPU to 1.9GHz, set governor to powersave, set brightness to auto and then to 30% manual, and still all the same, nothing better! I don't play games or use huge apps, just facebook, whatsapp, 9chat, calls, and FaucClock.
On average, I lose +10% of the battery per hour, Is this normal for this device? The battery says it's 3000mAh but it's acting like it's 1450mAh!
UPDATE:
Yesterday I tried to drain the battery to 0% to charge it again by watching a Full HD movie. It consumed about 30% of the battery leaving me with 30%, that was on 02:48AM. Today I woke up at 9:00AM and there was 29% left, meaning it only consumed 1% in about 6hrs. using the phone would consume more than 5%/hr but the standby is getting really good and very stable. I'll be draining the battery and try to recharge it later hopefully it can get better than this.

ahmad.afef said:
Hello everyone,
Just got my G3 about 3 days ago, and so far the battery is going really bad for me.THis phone would consume the whole battery in just 6.5 hrs!!
I used to have Xiaomi Mi4 before it and it would easily make it the whole day -some times +18hr- on the same usage connections.
I've tried different roms and kernels, limited the CPU to 1.9GHz, set governor to powersave, set brightness to auto and then to 30% manual, and still all the same, nothing better! I don't play games or use huge apps, just facebook, whatsapp, 9chat, calls, and FaucClock.
On average, I lose +10% of the battery per hour, Is this normal for this device? The battery says it's 3000mAh but it's acting like it's 1450mAh!
Click to expand...
Click to collapse
Check your wakelocks...

pikachukaki said:
Check your wakelocks...
Click to expand...
Click to collapse
Thanks for the reply. I really don't know how to read it, so I just attached some pics, I hope they're useful for you.

I have the same, if not worse, battery drainage. I got my phone(new) yesterday. Just 40 minute ago o was charging it and after i plugged out o saw immediately how the battery was draining more like a % per minute . I looked in the the battery section to see that it'll stay on for 3 hours and 40 minutes. Now i'm letting it play on YouTube till the battery is empty-empty , do a recharge and if that is not the case, maybe i just have a faulty battery and hopefully not a faulty phone. Although i looked at the apps that were used in stand-by(over night) and i sow that Google services was using 16% battery in stand-by , something that i never had like that. Yesterday when my phone arrived it had already pre installed Lollipop 5.0 . After connecting to wi-fi the software updated once more with a small file, something like 120-160 mb, i'm not sure exactly. Now it says that it has the latest update - 20h . I'l do a few full discharge/charge cycles and if that doesn't solve the issue it must be the battery or the phone. Either way i hope i'll not end up returning the phone for testing , the though is already infuriating me a little.

Alexzander said:
I have the same, if not worse, battery drainage. I got my phone(new) yesterday. Just 40 minute ago o was charging it and after i plugged out o saw immediately how the battery was draining more like a % per minute . I looked in the the battery section to see that it'll stay on for 3 hours and 40 minutes. Now i'm letting it play on YouTube till the battery is empty-empty , do a recharge and if that is not the case, maybe i just have a faulty battery and hopefully not a faulty phone. Although i looked at the apps that were used in stand-by(over night) and i sow that Google services was using 16% battery in stand-by , something that i never had like that. Yesterday when my phone arrived it had already pre installed Lollipop 5.0 . After connecting to wi-fi the software updated once more with a small file, something like 120-160 mb, i'm not sure exactly. Now it says that it has the latest update - 20h . I'l do a few full discharge/charge cycles and if that doesn't solve the issue it must be the battery or the phone. Either way i hope i'll not end up returning the phone for testing , the though is already infuriating me a little.
Click to expand...
Click to collapse
I just hope it's the first few days of the battery life and it would get better by time, but tbh this is the first time I see something like this!

I don't know if it helps but I had similar battery drain after I install a new update of Android. It happened after every update.
For me the solution was a full wipe.
After it I can reach ~2days with ~4hours SOT.

ahmad.afef said:
Thanks for the reply. I really don't know how to read it, so I just attached some pics, I hope they're useful for you.
Click to expand...
Click to collapse
Use greenify messenger and whats up are causing all those wakelocks....

At the time i posted here(post #4) my battery was at around 60 percent playing YouTube for the first real drainage of battery science i've got my phone. Now it's at 12 % with 26 minutes estimated till complete drain. I mention i have the speaker on mute. If i had it on the drainage would've been a little faster. Anyway, after the drain i'll recharge the battery and let it overnight in stand by with the wi-fi on. Also the location will be enabled so the data connection even though it's somewhat deactivated by the wi-fi on status. I enabled also bluetooth and NFC although those are more dormant than active. It'll be setted just as i'm using it daily . Now it's 12:14 AM Eastern Europe time. I'll post here the finishing time of charging/letting it in stand by. In the morning (my morning time ) I'll post again the battery percent. I'll use the phone normally with a little bit of everything . Wi-fi will be on all the time, so the voice network and from time to time i'll "simulate" a carrier 4g/LTE data only usage(YouTube, FaceBook and Mail). I'll post againt the time when the battery will be depleted completely.
It's now 01:12 and the battery is empty. I'll charge it and talk to you in the morning.

Check the SD card. do you still have a battry drain if the sd card is in the Phone?
i had the same problem. i toke the sd card out and my Phone was normal again and no overheated Phone.
i formatted my card to NTFS and it worked.

padarnor said:
I don't know if it helps but I had similar battery drain after I install a new update of Android. It happened after every update.
For me the solution was a full wipe.
After it I can reach ~2days with ~4hours SOT.
Click to expand...
Click to collapse
Thanks for the reply. I've tried a full wipe more than one, still the same.
pikachukaki said:
Use greenify messenger and whats up are causing all those wakelocks....
Click to expand...
Click to collapse
Alexzander said:
At the time i posted here(post #4) my battery was at around 60 percent playing YouTube for the first real drainage of battery science i've got my phone. Now it's at 12 % with 26 minutes estimated till complete drain. I mention i have the speaker on mute. If i had it on the drainage would've been a little faster. Anyway, after the drain i'll recharge the battery and let it overnight in stand by with the wi-fi on. Also the location will be enabled so the data connection even though it's somewhat deactivated by the wi-fi on status. I enabled also bluetooth and NFC although those are more dormant than active. It'll be setted just as i'm using it daily . Now it's 12:14 AM Eastern Europe time. I'll post here the finishing time of charging/letting it in stand by. In the morning (my morning time ) I'll post again the battery percent. I'll use the phone normally with a little bit of everything . Wi-fi will be on all the time, so the voice network and from time to time i'll "simulate" a carrier 4g/LTE data only usage(YouTube, FaceBook and Mail). I'll post againt the time when the battery will be depleted completely.
It's now 01:12 and the battery is empty. I'll charge it and talk to you in the morning.
Click to expand...
Click to collapse
Waiting for a feedback.
Cradlebmw said:
Check the SD card. do you still have a battry drain if the sd card is in the Phone?
i had the same problem. i toke the sd card out and my Phone was normal again and no overheated Phone.
i formatted my card to NTFS and it worked.
Click to expand...
Click to collapse
I don't have an SD card.

You have stock firmware?? And try to install os monitor and it tells you witch program is using the most!

On stock rooted firmware

I also don't have an sd card, and of course i did a phone reset before recharging. I'm getting a little worried dough. Last night it finished charging after 1 hour and 50 minutes. I immediately started tu setup the phone with the google account , did a google restore . Also i forgot to tell that i'm on Orange Romania and i do have some bloatware but i disabled all of it just to make sure that those apps won't interfere with my test. Already my battery was at 85% before going to sleep. I mention that my google restore does not take to much time . When i woke up 10.45 AM my time( now is 11.23 AM) the battery was at 75 percent. I stayed a little on YouTube and just answered a 30 second call and it's down to 67 % now. I am getting aggravated. I'll call Orange support to tell the about the situation and i'll ask them if i can firstly try to fix my problem alone by rooting the phone. If they don't like the idea of rooting my phone i'll try a few more charges/discharges .

Install OS monitor!

I'll try it. Thanks! By the way now the time is 15:56 and the battery is at 66%. So it lost 2 percent in 4 and a half hours(stand-by).
Ps: now that i woke it up for writing this post, it's at 63%.

Really strange battery drain

Hello there,
I've a new G4 since last friday and I'm experiencing a really strange battery drain.
Let's say I will charge my phone to 100% and than leave it idle, it will start discharging really slowly with all syncs active (for example last night it lost 2% in 8 hours). That's cool.
The problem is that as soon as I start using it again it will drain really fast, like 1% every 2 minutes. What is strange is that after start using it it will drain fast (1% every 10 minutes) even if i will let it idle again, so screen off and same operations as the 2% lost during 8h in the night.
At the moment I'm in Germany and I've experienced same drain ratio under good and bad cell signal and wifi. My model is H815. I'm not rooted so I cannot see good statistics in BBS.
I've already tried a factory reset.
Thanks everyone fo the help

I would start with checking the battery information inside settings. In there it will give the biggest battery drains. If you're lucky, you'll see something else up top that is not Android System, Android OS, or the screen.

Muffyone said:
Hello there,
I've a new G4 since last friday and I'm experiencing a really strange battery drain.
Let's say I will charge my phone to 100% and than leave it idle, it will start discharging really slowly with all syncs active (for example last night it lost 2% in 8 hours). That's cool.
The problem is that as soon as I start using it again it will drain really fast, like 1% every 2 minutes. What is strange is that after start using it it will drain fast (1% every 10 minutes) even if i will let it idle again, so screen off and same operations as the 2% lost during 8h in the night.
At the moment I'm in Germany and I've experienced same drain ratio under good and bad cell signal and wifi. My model is H815. I'm not rooted so I cannot see good statistics in BBS.
I've already tried a factory reset.
Thanks everyone fo the help
Click to expand...
Click to collapse
Try disabled sync while using others app to see the outcome

I have the same problem. That's why I have a spare battery + charging cradle + power bank. Maybe I'll need to flash again since my device is not acting normally.
See my post and screenshots here http://forum.xda-developers.com/showpost.php?p=62982669&postcount=942

spartan268 said:
I would start with checking the battery information inside settings. In there it will give the biggest battery drains. If you're lucky, you'll see something else up top that is not Android System, Android OS, or the screen.
Click to expand...
Click to collapse
faizalotai said:
Try disabled sync while using others app to see the outcome
Click to expand...
Click to collapse
bel57 said:
I have the same problem. That's why I have a spare battery + charging cradle + power bank. Maybe I'll need to flash again since my device is not acting normally.
See my post and screenshots here http://forum.xda-developers.com/showpost.php?p=62982669&postcount=942
Click to expand...
Click to collapse
Today it seems better, only stuff I've changed is that I've disabled the quick cirlce cover since I don't have it but I don't think is related. At the momento I'm at 50% after 7h of wich 2h and 15min of screen time. Seems good to me.
I will go on testing during the weekend and I will report back. I hope the culprits are not rocket player (and mediaserver sice my music is on the SD card) but I've noticed a higher battery drain when using it. (today I haven't that much)

Those are some very good stats so far. Poised to hit 4h on the dot for SoT which is considered the expected average

I had to use a different launcher rather than the stock one and also a quick circle app and that was it

Muffyone said:
Today it seems better, only stuff I've changed is that I've disabled the quick cirlce cover since I don't have it but I don't think is related. At the momento I'm at 50% after 7h of wich 2h and 15min of screen time. Seems good to me.
Click to expand...
Click to collapse
It is, if you were to continue you would be looking at 12h+ of run time.
I will go on testing during the weekend and I will report back. I hope the culprits are not rocket player (and mediaserver sice my music is on the SD card) but I've noticed a higher battery drain when using it. (today I haven't that much)
Click to expand...
Click to collapse
i think that is just reindexing of content on the sd card. It is temporary. It could also mean that your sd card is going bad and more reads were required.

One Twelve said:
i think that is just reindexing of content on the sd card. It is temporary. It could also mean that your sd card is going bad and more reads were required.
Click to expand...
Click to collapse
I've tested the card and seems good, It's strange that is still indexing it, I've the phone since one week now.
The charge after the one that seemed ok was totally bad. I'll investigate more
Thanks everyone

If you add files or remove them then i think it triggers indexing. Leave it for a while it should go away after some time.
if it does not try a different card. I only use the red sandisk class 10 cards, these give the least problems.

Muffyone said:
I've tested the card and seems good, It's strange that is still indexing it, I've the phone since one week now.
Click to expand...
Click to collapse
This of course is way, way too long.
Usually this is because of a corrupt/unreadable/unknown file on the external SD. Copy all files to PC, format the card, restore files. The media scanner will now end it's process in a matter of minutes :good:

So I've investigated a bit during the past few days, those are the results:
- Media server is not anymore keeping the device awake that much
- It seems that RocketPalyer is using a lot of CPU compared to what it was doing on my Note 3.
- Battery drain still seems a bit random, yesterday for example i got 16 hours with 4h and 3min of screen time, today I'm already at 56% after 5h and only 1h and 20min of screen time (I'ìve not changed what I did with the device that much, and I'm under same network and wifi as yesterday at work)
I think that if I want to understand why sometimes is acting weird I will have to root and use wakelock detectors, btw now that I saw that the device is not faulty (I was able to get good battery time on some days) I'm not afraid that much anymore to root it.
Thanks everyone

Muffyone said:
- Battery drain still seems a bit random, yesterday for example i got 16 hours with 4h and 3min of screen time, today I'm already at 56% after 5h and only 1h and 20min of screen time (I'ìve not changed what I did with the device that much, and I'm under same network and wifi as yesterday at work)
Click to expand...
Click to collapse
you have normal sot. 4-5hsot with wifi.
have been trying to figure out keep awakes with people that can't get more than half as much.
I think that if I want to understand why sometimes is acting weird I will have to root and use wakelock detectors, btw now that I saw that the device is not faulty (I was able to get good battery time on some days) I'm not afraid that much anymore to root it.
Thanks everyone
Click to expand...
Click to collapse
There is a way to see wake locks without root.

One Twelve said:
you have normal sot. 4-5hsot with wifi.
have been trying to figure out keep awakes with people that can't get more than half as much.
Click to expand...
Click to collapse
Yes 4-5h sot is when is working fine, but sometimes I get 2.5-3, that's when it annoys me

Muffyone said:
Yes 4-5h sot is when is working fine, but sometimes I get 2.5-3, that's when it annoys me
Click to expand...
Click to collapse
something to do with gps ?
check your android system and see whether it has any gps minutes on it that should not be there if you weren't using gps.

Muffyone said:
Yes 4-5h sot is when is working fine, but sometimes I get 2.5-3, that's when it annoys me
Click to expand...
Click to collapse
I get 2.5 to 3 on work days.
I get spotty signal at my desk and the skytrain makes my phone go on a major drain

Horrible battery life on newish S4 Mini ("best" performance <3h)

Hey guys,
after dropping my beloved Nexus 4 to the concrete floor in May, I bought a new S4 mini in the electronic market because of it's decent size and all the fuzz about having a very good price-performance-ratio.
After a few weeks I already was fairly disappointed.
On an average work day (without WiFi) and little use (~30min OSD) the battery wouldn't last a full day. I tried the usual things like turning off GPS, bluetooth and using Wifi whenever possible (turning it off, when not in range), etc. I also used the App greenify which boosted my deepsleep in Wakelock Detector to stable 85+%.
When using GMaps/navigation my phone is getting hot (~50°C) and battery is drained within minutes. When trying to navigate out of the city (<15min navigation) one day my phone was discharged within 3 hours after a full charge. I got Wakelock Detector, Better Battery Stats and Battery Monitor Widget installed.
The only thing I found out, that when I am connected to Wifi the drain is a lot lower 1-2%/hour compared to when I am using 3G/H+ which results in 7-15%/hour (both when not using the phone), although there is no problem with signal quality. Recently my phone started to bottoming out rly hard when hitting the 20% mark. From there I can watch the battery dropping to 0% within a few minutes.
Things I tried so far:
- turning off features that are not in use (GPS, bluetooth, Wifi when not in range)
- make sure phone gets into deep sleep/greenify apps
- recalibrate akku
- reduce brightness & disable auto-brightness
Setup:
GT-I9195 bought in May 2015 from electronic market chain
CM 12.1 (Android 5.1.1, serranoltexx)
Standard CM Kernel
Baseband I9195XXUBML4
I can provide Screenshots from BMW, WD and BBS. Any ideas how to solve this or what else I could do?

Probably you should use something like better battery stats, to check
- if a service is going mad, then turn it off with disable service to test (most times happens with unclean flash)
- if you have an app with wakelocks
If you can't find anything that way, might be a hardware fault.

Personally if I came across this problem I would return the phone to stock Android and do some tests, see if the same happens again. CM12.1 can have issues across different same model phones. Try the Samsung Phone Info app to see how old your phone is. I'm guessing it was second hand? Some older revisions of the Mini had battery problems. Maybe a new battery is needed? Maybe.. As for the battery draining 20%-0% in minutes I have also suffered this on a brand new March 2015 device. Not all the time though it only happens with randomly once a week. But I put that down to the battery not been fully calibrated and then drained and recharged over the next 3 4 days, as I use a spare battery and swap out the batteries regularly which means my battery is very rarely calibrated.
All that said though I can easily get through an entire day if not 2. And using stock I'm able to get 4 and a half hours on average every time, maybe 4 hours of screen on time when using 3G a lot and GPS etc.

NNNexX said:
Hey guys,
When using GMaps/navigation my phone is getting hot (~50°C) and battery is drained within minutes. When trying to navigate out of the city (<15min navigation) one day my phone was discharged within 3 hours after a full charge. I got Wakelock Detector, Better Battery Stats and Battery Monitor Widget installed.
The only thing I found out, that when I am connected to Wifi the drain is a lot lower 1-2%/hour compared to when I am using 3G/H+ which results in 7-15%/hour (both when not using the phone), although there is no problem with signal quality. Recently my phone started to bottoming out rly hard when hitting the 20% mark. From there I can watch the battery dropping to 0% within a few minutes.
Click to expand...
Click to collapse
I have had the same problem as you.
I return twice my phone to vendor. But they could do anything.
I solved it with undervolting and underclocking my phone (only the low frequency).
I read from someone, you can undervolting 150 millivolt.
My experience, is undervolting 125 milivolt. and underclocking the low frequency at the minimum.
You didn't feel any difference, behalves that the phone is cooler and battery live is better.
My WiFi and Bluetooth are always on. I don't have to recharge my phone during the day.
It is so effective en transparent that I don't understand why Samsung didn't do it natively.

Hey,
I tried to apply some of your advice and flashed the newest stock rom for S4 Mini (Kitkat ...COE4).
In that process I recognized that the Baseband is not updated by CM and that the one that was installed when I bought it was fairly old (from 2013). Do you think that this might be part of the problem? (I sort of hate the Samsung Rom)
This week when working and not having Wifi all day, I managed to get 2h of SOT and still had around 25% left which I couldnt have gotten before imo. I only lose 1-4% per hour when the phone is not used. But still thats not pretty good, when ur saying you can get 4h with GPS and everything. I also didnt use GPS. And today when I restarted my phone it just went from 40-ish % to 15% without any reason. Any more ideas?
I installed BetterBatteryStats today and will try to give some more insight the next days. Wakelock detector said that I had 85% deep sleep (timeframe 1 day 2 hours).
Try the Samsung Phone Info app to see how old your phone is. I'm guessing it was second hand? Some older revisions of the Mini had battery problems. Maybe a new battery is needed?
Click to expand...
Click to collapse
No I bought it new from a electronic store (Media Markt). The app says that is was made on Oct 19th 2014 in Vietnam and that it is original/not refurbished.
How much do you gain by undervolting (SOT or % per hour when idle)?
How do you do it?

maybe the best way is to downgrade by flashing CM11 for example ...
(another way with stock + Alexax kernel + own debloat&freeze ... )
I have the same consumption problem with Resurection Remix LP too ..... very strange !
Lollipop is supposed to be less angry than Android 4.X.X ... but it seem have problem somewhere for our S4-mini sources maybe ,i don't know ...

This night I did some BBS tests:
Setup:
Stock Rom I previously installed (see posts above)
charged phone during evening
set up custom timepoint before I went to sleep
WLAN disabled
all apps greenyfied except those I deemed significant that they keep running (Whatsapp, calendar, Swiftkey, BBS, BMW, etc). Forgot newly installed app hoomn.
I had to upload the logfile to pastebin because it was too long for the xda forum: pastebin.ca/3256568 (I am not allowed to post URLs, sorry)
I lost 14% of battery during 9hrs (-1,6%/h). That's probably not too bad?
93% deep sleep, 33min awake time
Weird things I discovered/things I did not understand:
- negative Voltage loss?
- Wifi runtime 100% although I disabled it
- dominant wakelocks (count > 100, all of them < 30s): Alarm Manager, RILJ1, *net_scheduler*, GCM_CONN, ContextManagerWakeLock, Event Log Service, AlarmManager (com.sec.spp.push.Samsung Push Service), SyncLoopWakeLock, GCM_HB_ALARM
- dominant KWLs (count > 100): ril-fd (25min), bam_dmux_wakelock (13min), radio-interface (7min), PowerManagerService.WakeLocks (3min), mmc1_detect (1min), alarm_rtc, alarm, sec-charger-monitor, smdcntl0, pm8921_soc_lock, power-supply, KeyEvents, smsm_snapshot, qmuxd_port_wl_0, qmuxd_port_wl_1, smdcntl1, mmc0_detect
- Alarms (>20): ccc71.bmw (Battery Monitor Widget), android, com.google.android.gms, com.sec.spp.push
any ideas/assessments?

Is this normal ?

Had this for 2 weeks basically same stats why does android take so much battery?!? Standby drain is horrible. I'm on latest update. This has been from the first day I got it.

My battery life is almost the same

I'm in the same situation, horrible battery performance, I have the Exynox SM-N975F

bovoro said:
I'm in the same situation, horrible battery performance, I have the Exynox SM-N975F
Click to expand...
Click to collapse
Another one here.
Have the phone for 5 days and it loses 30%+ overnight... My old S8 loses only 9%.

RoyaL said:
Another one here.
Have the phone for 5 days and it loses 30%+ overnight... My old S8 loses only 9%.
Click to expand...
Click to collapse
30% is a lot.. Go for battery setup and try to find an reason (some apps maybe eat little bit more, then they should). Second problem is processor... Owners of Exynos have bigger battery usage, then Snapdragon users, that is fact. Maybe try to turn off voice activation of Bixby.

Stanislav.K said:
30% is a lot.. Go for battery setup and try to find an reason (some apps maybe eat little bit more, then they should). Second problem is processor... Owners of Exynos have bigger battery usage, then Snapdragon users, that is fact. Maybe try to turn off voice activation of Bixby.
Click to expand...
Click to collapse
Another night, another 31% drained. From 60 to 29...
I killed all open apps before going to bed. And still...
Battery usage shows nothing. The game was played before going to bed, so it was not the caused.
This is a big disappointment.
Edit : yep, just noticed I had Bixby voice wake up enabled. Just killed it. Let's see tomorrow.

I was about to make a similar post asking for help. To me it doesn't seem right Android system is using 2-3x battery than any other app/program. And lost 13% in just one hour.

I installed CPU Spy and my Phone never ever entered Deep Sleep. 0 seconds
I've just reset all network and system settings but it seems done anything to the issue.
Really want to avoid factory resetting...
I feel I returned 10 years in time, getting back to troubleshoot deep sleep and wake locks on Android 2.0... But now on a 1K device. Shame on you, Samsung...

RoyaL said:
I installed CPU Spy and my Phone never ever entered Deep Sleep. 0 seconds
I've just reset all network and system settings but it seems done anything to the issue.
Really want to avoid factory resetting...
I feel I returned 10 years in time, getting back to troubleshoot deep sleep and wake locks on Android 2.0... But now on a 1K device. Shame on you, Samsung...
Click to expand...
Click to collapse
Mine sleeps like a baby 20 min runtime 18 min deep sleep
I have the exynos version

Running US version mine uses about 2% overnight sometimes less

Mine Exynos looks so . The Battery can better, don't know what I do wrong

I have the same results. 4hrs, sometimes barely 5hr of SOT
Android system, and idle device seems to drain too much battery ... I'm disappointed.

Yeah me too,
I see a lot of people with crazy SoTs that go beyond 7 or 8 hours. And i'm stuck here with 4 to 5 hours. I don't see why since Samsung develops its own Exynos platform. Maybe Android isn't fully optimized for Exynos ?

My Note (Exynos) use about 5% max 10% battery over night. Always on display is off and Bixby still off. 10% if everything is turn on.

Any solution to this guy's? Its driving me crazy brand new phone with huge battery drain problems...

RoyaL said:
Another one here.
Have the phone for 5 days and it loses 30%+ overnight... My old S8 loses only 9%.
Click to expand...
Click to collapse
Def something wrong! I have the Exynos model and i lose 4% over night

Ranop11 said:
Any solution to this guy's? Its driving me crazy brand new phone with huge battery drain problems...
Click to expand...
Click to collapse
Nope. I think it depends on the LTE band and provider. is just a guess.

I have finally fixed my problem. Reset all Network and System Settings (without factory reset), put all the settings back how I had before, and now it is going fine into Deep Sleep overnight.
Went from 31% to 5% battery drain in 8h sleep. Now its perfect.
Don't know exactly what was causing it but it must have been a bug as all the settings are exacly as I had before.

RoyaL said:
I have finally fixed my problem. Reset all Network and System Settings (without factory reset), put all the settings back how I had before, and now it is going fine into Deep Sleep overnight.
Went from 31% to 5% battery drain in 8h sleep. Now its perfect.
Don't know exactly what was causing it but it must have been a bug as all the settings are exacly as I had before.
Click to expand...
Click to collapse
Thanks will test this out.:laugh:

Friends, I have 5 charge cycles with this equipment, I suffer from battery drain too, does anyone know what the battery health means in the "PHONE info" for samsung APP? the Battery Health value that appears to me is 40.1%. Is my battery defective?