Develop Bugs

Battery drain

i am new on note2 using custom rom 4.1.2 i feel last night my battery drain at least 13% whole night on standby.my early s3 take only 1% on standby whole night.

relisys667 said:
i am new on note2 using custom rom 4.1.2 i feel last night my battery drain at least 13% whole night on standby.my early s3 take only 1% on standby whole night.
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Click to collapse
S3 only 1%? Wow that's awesome.. WiFi and Data On?
Sent from my GT-N7100 using xda premium

relisys667 said:
i am new on note2 using custom rom 4.1.2 i feel last night my battery drain at least 13% whole night on standby.my early s3 take only 1% on standby whole night.
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Click to collapse
13% is ODD. Something is sucking up your battery.
Expand your Android system and post the Screenshot - want to look at cpu wake time.
What is your setting under - Advanced Wifi options - while asleep - wifi on or off ?

SAJdroid said:
13% is ODD. Something is sucking up your battery.
Expand your Android system and post the Screenshot - want to look at cpu wake time.
What is your setting under - Advanced Wifi options - while asleep - wifi on or off ?
Click to expand...
Click to collapse
now i set wifi sleep to never and watch this night
thnx for replying

SAJdroid said:
13% is ODD. Something is sucking up your battery.
Expand your Android system and post the Screenshot - want to look at cpu wake time.
What is your setting under - Advanced Wifi options - while asleep - wifi on or off ?
Click to expand...
Click to collapse
To be honest I have done so many tweaks to help with wakelocks. It is definately not an app but the standby time is sooo much worse on my Note in comparision to my HTC One S. I'll get about a day regardless of screen time. On my One S I'll get 2 days with the same screen time and with the same apps.
The only thing I can think of it being is that mdm_hsic kernel wakelock. Have no clue what to do about that though, and it's clearly a Samsung/Note 2 bug given that the HTC doesn't have this sucking away the standby time.
Sent from my Galaxy Note II LTE using Tapatalk

Do you have ebay app installed?
Try uninstalling and see if this makes a difference. The ebay process/service constantly runs in background even tho its disabled in app settings and doesn't show battery usage.
I had same problem and found that its to blame!

unFKNreal said:
Do you have ebay app installed?
Try uninstalling and see if this makes a difference. The ebay process/service constantly runs in background even tho its disabled in app settings and doesn't show battery usage.
I had same problem and found that its to blame!
Click to expand...
Click to collapse
The thing is, I also have the ebay app on my HTC and it doesn't suffer from this problem. The HTC is 4.1.1 though so I'm guessing this is either a Samsung problem or a 4.1.2 problem.
Sent from my Galaxy Note II LTE using Tapatalk

relisys667 said:
i am new on note2 using custom rom 4.1.2 i feel last night my battery drain at least 13% whole night on standby.my early s3 take only 1% on standby whole night.
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Click to collapse
hi,just a few pointers to think about ....?
i am on stock 4.1.2 not rooted ,and my avarage battery drain overnight (10/11 hrs +) is 2%..or ..3 %.
i also have a note8.0 and battery drain is normally 1% in standby mode overnight (10/11 hrs )also on 4.1.2
lucky ? no i don't think so .
(maybe i got my all "tweaks " right..no ?)
just a few pointers (things to think about, why others get better results and others not,in this case on 4.1.2 )
good luck

unFKNreal said:
Do you have ebay app installed?
Try uninstalling and see if this makes a difference. The ebay process/service constantly runs in background even tho its disabled in app settings and doesn't show battery usage.
I had same problem and found that its to blame!
Click to expand...
Click to collapse
no dear brother i have not installed any ebay app

relisys667 said:
no dear brother i have not installed any ebay app
Click to expand...
Click to collapse
Do you have any Battery manager apps installed? I had one that constantly pulled WiFi status and since I have WiFi disabled when outside of home or work it kept on turning it on/off and drained my battery. It was my error for configuring it wrongly, I admit but still, that may happen without control.
Check Wakelock Detector, click on this:
Awake.............................Statistics since..............................Deep sleep
bar after night of rest and post statistics that you find there, The most interesting is a difference between Screen-on and awake times. If your phone is awake much longer than it has it's screen on then there are some processes that keep it awake and drain battery.

mat9v said:
Do you have any Battery manager apps installed? I had one that constantly pulled WiFi status and since I have WiFi disabled when outside of home or work it kept on turning it on/off and drained my battery. It was my error for configuring it wrongly, I admit but still, that may happen without control.
Check Wakelock Detector, click on this:
Awake.............................Statistics since..............................Deep sleep
bar after night of rest and post statistics that you find there, The most interesting is a difference between Screen-on and awake times. If your phone is awake much longer than it has it's screen on then there are some processes that keep it awake and drain battery.
Click to expand...
Click to collapse
Last night I disable wifi and battery takes 3% whole night I think wifi eat battery

relisys667 said:
Last night I disable wifi and battery takes 3% whole night I think wifi eat battery
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Click to collapse
WiFi by itself will not eat battery, something has to use it to create this drain. How do you have your wifi configured?
Check in Settings>WiFi>Advanced>Keep WiFi on during sleep>???
I have that set to Never

mat9v said:
WiFi by itself will not eat battery, something has to use it to create this drain. How do you have your wifi configured?
Check in Settings>WiFi>Advanced>Keep WiFi on during sleep>???
I have that set to Never
Click to expand...
Click to collapse
Wifi does seem to be messed up on this phone. I find, on standby, it causes more drain than 3G does. Usually something like 10% - 15% overnight.
This is not right and something is seriously a miss with Samsung. My HTC running the exact same apps does not have this problem. You shouldn't have to turn wifi off as opposed to 3G to get better battery life.
Sent from my Galaxy Note II LTE using Tapatalk

fade2black101 said:
Wifi does seem to be messed up on this phone. I find, on standby, it causes more drain than 3G does. Usually something like 10% - 15% overnight.
This is not right and something is seriously a miss with Samsung. My HTC running the exact same apps does not have this problem. You shouldn't have to turn wifi off as opposed to 3G to get better battery life.
Sent from my Galaxy Note II LTE using Tapatalk
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Click to collapse
Are you thinking about some hardware problem that causes wifi to use more memory than usual? Like higher voltage or something? Because that is not very probable. I think there is some app there that is using wifi, high power usage happens when wifi is performing scans is being turned on or actively transmiting data. Please use wakelog detector to find what app is causing kernel wakelocks and from there we can find a real culprit.
I does not have to be malicious but may be an incompatibility between hardware and some software, one that works well on HTC and not on this Samsung model.

mat9v said:
Are you thinking about some hardware problem that causes wifi to use more memory than usual? Like higher voltage or something? Because that is not very probable. I think there is some app there that is using wifi, high power usage happens when wifi is performing scans is being turned on or actively transmiting data. Please use wakelog detector to find what app is causing kernel wakelocks and from there we can find a real culprit.
I does not have to be malicious but may be an incompatibility between hardware and some software, one that works well on HTC and not on this Samsung model.
Click to expand...
Click to collapse
No I don't think it's hardware.
I also don't think it is an app given what I have observed with wakelocks and deep sleep. I have made many adjustments to the phone and I'm clued up with wakelocks and the like and this doesn't seem to be a wakelock issue.
I have even assigned a static ip and made tweaks within my router but it hasn't helped. There seems to be a strange way this phone handles wifi and it is causing unnecessary drain.
In regards to Kernel wakelocks, it would appear something called mdm_hsic is causing lots of wakeups and more standby drain than it should be and this does not feature at all on my HTC. This is not related to wifi, but I'm pinning the general crappy standy drain im getting on this but there doesn't seem to be a way to get rid of it.
Sent from my Galaxy Note II LTE using Tapatalk

Id download ds battery saver from the playstore and set it to agressive itll turn off wifi and data whenever screen is locked and turn it back on upon unlock. Its awesome on my sgs4
Sent from my SAMSUNG-SGH-I337 using xda premium

fade2black101 said:
No I don't think it's hardware.
I also don't think it is an app given what I have observed with wakelocks and deep sleep. I have made many adjustments to the phone and I'm clued up with wakelocks and the like and this doesn't seem to be a wakelock issue.
I have even assigned a static ip and made tweaks within my router but it hasn't helped. There seems to be a strange way this phone handles wifi and it is causing unnecessary drain.
In regards to Kernel wakelocks, it would appear something called mdm_hsic is causing lots of wakeups and more standby drain than it should be and this does not feature at all on my HTC. This is not related to wifi, but I'm pinning the general crappy standy drain im getting on this but there doesn't seem to be a way to get rid of it.
Sent from my Galaxy Note II LTE using Tapatalk
Click to expand...
Click to collapse
mdm_hsic is related to Modem part, you may try different modems (be mindfull of efs problem in newer firmwares), also try to enable/disable "fast dormancy". I think you could test that by selecting "GSM only" and observing.

mat9v said:
mdm_hsic is related to Modem part, you may try different modems (be mindfull of efs problem in newer firmwares), also try to enable/disable "fast dormancy". I think you could test that by selecting "GSM only" and observing.
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Click to collapse
Thanks for the reply
I have tried different radios in the past. If that's what you mean?
I've also tested around with fast dormancy (it is currently disabled)
My network only works on 3G and has no 2G coverage. It is purely a 3G network and therefore GSM only will not work. This problem still persisted when I was on a different network though and selected gsm only fornthe majority of the time.

fade2black101 said:
Thanks for the reply
I have tried different radios in the past. If that's what you mean?
I've also tested around with fast dormancy (it is currently disabled)
My network only works on 3G and has no 2G coverage. It is purely a 3G network and therefore GSM only will not work. This problem still persisted when I was on a different network though and selected gsm only fornthe majority of the time.
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Click to collapse
Yes, I was talking about radios.
Have you ever tried changing CSC file? Full, four part flash in Odin, not only PDA?
What method did you use for modifying fast dormancy setting? Because the correct one includes full factory reset when changing CSC. Anyway fast dormancy would be a problem only if you used 3G network for data.

mat9v said:
Yes, I was talking about radios.
Have you ever tried changing CSC file? Full, four part flash in Odin, not only PDA?
What method did you use for modifying fast dormancy setting? Because the correct one includes full factory reset when changing CSC. Anyway fast dormancy would be a problem only if you used 3G network for data.
Click to expand...
Click to collapse
Nope have not tried changing the CSC.
The method I used for fastdormancy was with that app in the marketplace than allows you to toggle it on and off. I'm not sure if fastdormancy is linked the mdm_hsic though, to be honest.

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?
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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?
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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.

Wifi Calling Battery Drain

Anybody else getting battery drain from wifi calling being enabled?

My wifi calling is on but when i go into power saving settings the WFC Setting is not there to show if it is draining battery.

M4ver1ck said:
Anybody else getting battery drain from wifi calling being enabled?
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Click to collapse
It should be draining your battery. You are constantly broadcasting a wifi signal looking for other wifi signals. I turn off wifi period unless I am at a location I want it to be used at. The Wifi is the strongest RF generator on your phone and the one that creates the most drain next to the display.

It should definitely NOT drain your battery like that. Not even close. I use it all the time. You need to clear out the cache and clear data if possible. Force stop the app and reboot. Should be good to go.

I turn on the wifi calling at work, lowest I have seen my phone go to is about 50% at a 9 hour work day. Have no issues with battery life on wifi calling.
Sent from my SM-N910P using XDA Premium HD app

HTC 10 WiFi issues

So I have an HTC 10 and I generally like this device but I have a few problems though. Wondering if anyone can help me out.
1. I have extremely high battery drain while using WiFi. Like 1% every minute or two. If I go to sleep leaving the WiFi turned on I may lose 10 to 15% battery life which feels like quite a lot.
2. The battery history graph always displays WiFi as turned on no matter if I turned it on or off. It's basically a solid green line. Does anyone else have this problem or know of any solutions?
Thanks for helping!

jhadsfi said:
So I have an HTC 10 and I generally like this device but I have a few problems though. Wondering if anyone can help me out.
1. I have extremely high battery drain while using WiFi. Like 1% every minute or two. If I go to sleep leaving the WiFi turned on I may lose 10 to 15% battery life which feels like quite a lot.
2. The battery history graph always displays WiFi as turned on no matter if I turned it on or off. It's basically a solid green line. Does anyone else have this problem or know of any solutions?
Thanks for helping!
Click to expand...
Click to collapse
There's a few threads about Wi-Fi issues. I have bad drain as well along with many others.
Here is a main one:
http://forum.xda-developers.com/htc-10/how-to/wifi-constant-suspend-resume-leading-to-t3392562
Check if Wi-Fi scanning is turned on in Wi-Fi setting and turn that off. It keeps Wi-Fi active even when Wi-Fi is off.

andybones said:
There's a few threads about Wi-Fi issues. I have bad drain as well along with many others.
Here is a main one:
http://forum.xda-developers.com/htc-10/how-to/wifi-constant-suspend-resume-leading-to-t3392562
Check if Wi-Fi scanning is turned on in Wi-Fi setting and turn that off. It keeps Wi-Fi active even when Wi-Fi is off.
Click to expand...
Click to collapse
Thanks a lot for helping. I cannot find the WiFi scanning setting though. I checked in Settings > WiFi > Advanced WiFi. Nothing there.

jhadsfi said:
Thanks a lot for helping. I cannot find the WiFi scanning setting though. I checked in Settings > WiFi > Advanced WiFi. Nothing there.
Click to expand...
Click to collapse
Settings->Locations->Three dots(menu)->Scanning

Does wifi drain battery when moving about?

At home using wifi. When at work or on the road, LG G4 uses LTE but wifi setting remains on. Question, does this reduce battery life? In other words, does the phone keep looking for wifi networks and drain the battery in the process? If so, should I find an app that turns wifi off automatically whenever leaving home?

htcnext said:
At home using wifi. When at work or on the road, LG G4 uses LTE but wifi setting remains on. Question, does this reduce battery life? In other words, does the phone keep looking for wifi networks and drain the battery in the process? If so, should I find an app that turns wifi off automatically whenever leaving home?
Click to expand...
Click to collapse
I would asume yes it uses power always trying to find a open hotspot even if data is on. If u leave wifi on its on all the time. Prob in a lower power state just searching for open spot or known wifi . instead of downloading or streaming which bring it to full power.

I am going to try an app called wi-fi matic for the next few weeks. It allows turning off wifi radio when away from home. Let's see if it makes any difference with battery life.