battery is even worse after ICS - Galaxy Note GT-N7000 General

I had sticked with GB from day 1. Only a minor OTA update to 2.3.6. Four days ago I saw that there were a new ICS update for my French GNote. I said "what the hell!" and done with the update. Now I am getting 7-8 hours instead of 12-13 hours, and the phone is getting warmer now.

same old story.
ics gives more performance, but drains more battery.
I improve my situation with a change of kernel (speedmod)

There is a deep sleep issue well documented on ICS 4.0.3 for Note. If you install cpu spy you can see that when the screen is off your device is still running at 200MHz thus eating up the battery.
I've had my phone go dead after 3.5 hrs of use. Hopefully 4.0.4. resolves this issue
The poster who said that ICS just eats up more battery is wrong. There is a legitimate bug preventing the phone from deep sleep.
There is a trick where you can enable airplane mode, power device off, pull battery, insert battery back in, power on device and the deep sleep bug is gone, that is until you charge your phone again.
Hope this helps there are many threads about this.

If you are comfortable, flash a custom kernel or ROM. Also, get BetterBatteryStats and look for wakelocks.

I found ICS does drain more battery - though on my Note it wasn't anywhere near drastic as yours, maybe 5-10% more. I never ran into a deep sleep issue on 4.0.3 myself.
As for phone getting warmer, check to make sure you don't have an application running that is using a lot of CPU time. I found that for me, an older version of the Facebook app would occasionally get "stuck" and really use up the CPU, making the phone very warm - and running battery down.
As King Meda mentioned, a new kernel can make a big difference. After switching to the Speedmod kernel, I'm getting much better battery life, a few extra hours a day in my case.

Yes ICS gives smoother interface at the cost of battery life. I do not mean deep sleep bug. Even without that bug, ICS in general consumes 10 to 20% more battery when screen is on.

inurb said:
The poster who said that ICS just eats up more battery is wrong.
Click to expand...
Click to collapse
its my experience, my friend. I got no problem of deep sleep and I tried several kernels.
a lot of user in the italian forum represented the same problem.

King Meda said:
its my experience, my friend. I got no problem of deep sleep and I tried several kernels.
a lot of user in the italian forum represented the same problem.
Click to expand...
Click to collapse
Va bene amico Milanese. Io sono Abruzzese!

what to do if i found i have wakelocks..
andreww88 said:
If you are comfortable, flash a custom kernel or ROM. Also, get BetterBatteryStats and look for wakelocks.
Click to expand...
Click to collapse

4.0.3 certainly had worse battery life, as I couldn't even get my device to enter "deep sleep". But, personally, 4.0.4 lasts me through the day - if not a bit longer - and I am happy.

Brad387 said:
4.0.3 certainly had worse battery life, as I couldn't even get my device to enter "deep sleep". But, personally, 4.0.4 lasts me through the day - if not a bit longer - and I am happy.
Click to expand...
Click to collapse
+1
With 4.0.4 I'm more or less back where I was with GB, 1,5-2,5% drain per hour under normal use.
4.0.3 was a horror story for me due to the deep sleep (l2_hsic wake lock) problem.

Brad387 said:
4.0.3 certainly had worse battery life, as I couldn't even get my device to enter "deep sleep". But, personally, 4.0.4 lasts me through the day - if not a bit longer - and I am happy.
Click to expand...
Click to collapse
Tonio78370 said:
+1
With 4.0.4 I'm more or less back where I was with GB, 1,5-2,5% drain per hour under normal use.
4.0.3 was a horror story for me due to the deep sleep (l2_hsic wake lock) problem.
Click to expand...
Click to collapse
Which 4.0.4 roms and kernels u guys r using?
Thx
Sent from my GT-N7000 using xda premium

Chrak's rom lastest version with notecore 13.4ex......rock
Cheers
Inviato dal mio GT-N7000 con Tapatalk 2

Dear all,
I am pretty new to xda, so please bear with me
I to have upgraded to ics and find that my phone is getting slower as more functions are added : / also battery life seems to be getting worse with each update...
- still haven't found a rom that fixes this...
Will keep experimenting...

AviatorBobo said:
Dear all,
I am pretty new to xda, so please bear with me
I to have upgraded to ics and find that my phone is getting slower as more functions are added : / also battery life seems to be getting worse with each update...
- still haven't found a rom that fixes this...
Will keep experimenting...
Click to expand...
Click to collapse
Try cleanote 5.0(LR6 indian...lastest )with notecore 13.4 std or 13.4ex( for performance )
Fast , stable and battery safe(the phone not warm...up..).....
Hope this help
Inviato dal mio GT-N7000 con Tapatalk 2

Ofeliax said:
Try cleanote 5.0(LR6 indian...lastest )with notecore 13.4 std or 13.4ex( for performance )
Fast , stable and battery safe(the phone not warm...up..).....
Hope this help
Inviato dal mio GT-N7000 con Tapatalk 2
Click to expand...
Click to collapse
Thanks for the advice, but will the Indian version still have Danish interface? I don't speak Indian...

AviatorBobo said:
Thanks for the advice, but will the Indian version still have Danish interface? I don't speak Indian...
Click to expand...
Click to collapse
Inviato dal mio GT-N7000 con Tapatalk 2

inurb said:
There is a deep sleep issue well documented on ICS 4.0.3 for Note. If you install cpu spy you can see that when the screen is off your device is still running at 200MHz thus eating up the battery.
I've had my phone go dead after 3.5 hrs of use. Hopefully 4.0.4. resolves this issue
The poster who said that ICS just eats up more battery is wrong. There is a legitimate bug preventing the phone from deep sleep.
There is a trick where you can enable airplane mode, power device off, pull battery, insert battery back in, power on device and the deep sleep bug is gone, that is until you charge your phone again.
Hope this helps there are many threads about this.
Click to expand...
Click to collapse
Agree !!!
But 4.0.4 is good. Smooth, and stable.
I've no idea about the stockROM 4.0.4. I use customROM for 4.0.4, and it really suit my needs and my device.
Battery drains, normally due to :
*) application running in background, which requires high resources of CPU.
*) device doesn't go to proper deep sleep, when you are not using it, due to those background application, and due to some tweaks on the use kernel.
Because of the application in background, and can't go to deep sleep, you will feel that your device is heaty, and sometimes is very hot.
Once your device go hot, normally the battery will drain faster.
When this is happen, means it is time for you to check which application make your device do exercise too muach, or means it is time for you to re-flash your device.
So far, I never use stockROM at all for my device, and never use stock kernel as well. So the stock performance, is beyond my imagination.
So, peare, for your reference, you may try "speedmod" or "notecore" for your kernel. These 2 kernels have been reported as a safe kernel for ICS, and also reported as a good ICS kernel to maintain battery usage, so it won't drain so fast.
as for ROM, you may choose yourself. you can browse around at N7000 Android development, and find the ROM that you like.
You can also try the ROM I'm using now = CriskeloROM.
This ROM is very good to my device. I combine it with speedmod. So far so good.
No heaty device, and no lagging, very smooth, and battery last well (around 20+ hours).

peare said:
I had sticked with GB from day 1. Only a minor OTA update to 2.3.6. Four days ago I saw that there were a new ICS update for my French GNote. I said "what the hell!" and done with the update. Now I am getting 7-8 hours instead of 12-13 hours, and the phone is getting warmer now.
Click to expand...
Click to collapse
Try using speed mod kernel. Your battery life will be like 16-18hrs. I had same issue with ICS but am happy now.
Sent from my GT-N7000 using xda premium
---------- Post added at 06:36 PM ---------- Previous post was at 06:34 PM ----------
antique_sonic said:
Agree !!!
But 4.0.4 is good. Smooth, and stable.
I've no idea about the stockROM 4.0.4. I use customROM for 4.0.4, and it really suit my needs and my device.
Battery drains, normally due to :
*) application running in background, which requires high resources of CPU.
*) device doesn't go to proper deep sleep, when you are not using it, due to those background application, and due to some tweaks on the use kernel.
Because of the application in background, and can't go to deep sleep, you will feel that your device is heaty, and sometimes is very hot.
Once your device go hot, normally the battery will drain faster.
When this is happen, means it is time for you to check which application make your device do exercise too muach, or means it is time for you to re-flash your device.
So far, I never use stockROM at all for my device, and never use stock kernel as well. So the stock performance, is beyond my imagination.
So, peare, for your reference, you may try "speedmod" or "notecore" for your kernel. These 2 kernels have been reported as a safe kernel for ICS, and also reported as a good ICS kernel to maintain battery usage, so it won't drain so fast.
as for ROM, you may choose yourself. you can browse around at N7000 Android development, and find the ROM that you like.
You can also try the ROM I'm using now = CriskeloROM.
This ROM is very good to my device. I combine it with speedmod. So far so good.
No heaty device, and no lagging, very smooth, and battery last well (around 20+ hours).
Click to expand...
Click to collapse
How r u using criskelo and speed mod rom at same time. Pl share your installation process and Links for download
Sent from my GT-N7000 using xda premium
---------- Post added at 06:37 PM ---------- Previous post was at 06:36 PM ----------
Ofeliax said:
Try cleanote 5.0(LR6 indian...lastest )with notecore 13.4 std or 13.4ex( for performance )
Fast , stable and battery safe(the phone not warm...up..).....
Hope this help
Inviato dal mio GT-N7000 con Tapatalk 2
Click to expand...
Click to collapse
LR 6 is not android 5. It is ics 4.04.
Sent from my GT-N7000 using xda premium

I'm assuming this is the stock ROM with a potential eMMC bug the OP is talking about? I am using CM9 stable and deep sleep has no issues.
But I do feel Galaxy Note was more stable with a GB ROM and I used a slimrom called CassiesXtraLite.
peare said:
I had sticked with GB from day 1. Only a minor OTA update to 2.3.6. Four days ago I saw that there were a new ICS update for my French GNote. I said "what the hell!" and done with the update. Now I am getting 7-8 hours instead of 12-13 hours, and the phone is getting warmer now.
Click to expand...
Click to collapse

Related

Battery life on custom roms

Hey guys im keen to know your experiences with the various custom roms out there.. I have flashed villianrom today as my first custom along with various kernals but have had constant drain issues..
Looking at my battery awake stats it seems as if it never sleeps :-(
Sent from my GT-I9100 using Tapatalk
JAG131990 said:
Hey guys im keen to know your experiences with the various custom roms out there.. I have flashed villianrom today as my first custom along with various kernals but have had constant drain issues..
Looking at my battery awake stats it seems as if it never sleeps :-(
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Screenshots showing battery usage and more importantly screen on time.
I don't have Villian ROM but from reading the comments on thst thread this is one of the best as regards battery drain so im amazed you experience high drain.
I run Cognition and am happy with this.
Sent from my GT-I9100 using Tapatalk
You can see it just gettin eaten away screen off doesnt stop drain note the awake vs.screentime i have tried 4 kernals to no avail
Sent from my GT-I9100 using Tapatalk
Put on watchdog and let it run in the back ground and see if it's any app or widget misbehaving.
Thanks trying now
Sent from my GT-I9100 using Tapatalk
Just read in another thread that having motion sensor enabled causes this.
In my case ... Absolutely confirmed!
Very weird
Sent from my GT-I9100 using Tapatalk
JAG131990 said:
Just read in another thread that having motion sensor enabled causes this.
In my case ... Absolutely confirmed!
Very weird
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
That is very very weird!!
I was on Villain too,1.4 to be exact...drains as well,now on Litening 2.2,after resetting batt stats,best so far screen on time almost 5 hours, using mostly wifi..but with 3G,I get around 4hr 30mins...I usually leave my wifi on all the time at home,and switch on data only when I leave...
literom 2.2 doubled my battery life (no exageration) coming from stock rom. impressive.
Bus Driver said:
I was on Villain too,1.4 to be exact...drains as well,now on Litening 2.2,after resetting batt stats,best so far screen on time almost 5 hours, using mostly wifi..but with 3G,I get around 4hr 30mins...I usually leave my wifi on all the time at home,and switch on data only when I leave...
Click to expand...
Click to collapse
That sounds really poor performance..
Sent from my GT-I9100 using Tapatalk
Some extended idling:
Cognition 1.13 with CF KG1 Kernel, Phone undervolted as in screenshot + GPU @ 750mV for both states.
Android OS still taking 1h15m CPU time in that screenshot, which, in my experience in this case is I *think* because of Skype running all the time there. Also Trillian connected to multiple services running constantly with Wifi.
I'm using Cognition 1.15 with modified 1.4 ninmphetamine kernel, very good battery life so far! (probably the best compared to villainrom and litening rom for me)
Having fixed my awake issue my battery life is reasonable but i expected betted with villainrom + nenphetamine custom + undervolt.
We need to guage some good comparisons id like to get an extended idle test dont know if i can leave my phone for that long. LOL
Btw How did you undervolt gpu?
Sent from my GT-I9100 using Tapatalk
I would stay away from these newer kernels like Nephetamine until they actually mature. I alslo tried some other custom kernels and they kinda drained the battery way more. So I'm sticking to a plain kernel like CF for the moment. Also seems better to stick to the normal ondemand governor.
Undervolting GPU via Tegrak Ultimate, it's worth it imho, especially since I basically shaved off 25% voltage without any issues.
JAG131990 said:
That sounds really poor performance..
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
How many hours are you getting if 4:30 and 5 hours screen display on time is poor performance? Please enlighten me...
I too flashed Villain rom (KF2) 2 days back and after flashing I get more battery drain compared to KF2 stock rom. android os is consuming 60% of battery.
BTW How can i see that graph thats shown above? is there any app for that
galaxyII said:
I too flashed Villain rom (KF2) 2 days back and after flashing I get more battery drain compared to KF2 stock rom. android os is consuming 60% of battery.
BTW How can i see that graph thats shown above? is there any app for that
Click to expand...
Click to collapse
Just tap on the grey part,where it states the hours and minutes on battery, the graph will be expanded and shown...
I will post screenshots i took this morning 9 hours standby wifi off, background data off, auto sync off, everything else on, stock rom KF3, no freezing of anything
the result?
1%!! loss over 8.5 hours

Battery Life BUG in ICS based ROMS

I've done a little research and there is a bug in the 4.0.3 AOSP release. You can see a link to this issue here: http://code.google.com/p/android/issues/detail?id=22878#makechanges
Attached is a screenshot of the problem ocuring in ICS Passion 13.1
I am curious is anyone NOT having this issue?
Yeah, mine started couple of days ago with the same problem. Android System shows 75% battery usage.
I wonder if there is a fix for this bug. I read whatever is on the link but there is all king of possible solutions.
I'm on MIUI and this is happening quite a bit too
Yeah, My battery will be 80% I reboot and it 10% or it's10% and I reboot then it's 80%...lol
I think, 84% is the culprit. Read my post here --> http://forum.xda-developers.com/showpost.php?p=23766036&postcount=2223
bobshute said:
Yeah, My battery will be 80% I reboot and it 10% or it's10% and I reboot then it's 80%...lol
Click to expand...
Click to collapse
I used to have that issue on CM7 many moons ago. Did a bunch of searches and someone mentioned a process call GOOGLEBACKUPTRANSPORT.APK somewhere on XDA, that constantly runs even after you do not choose to backup to google (at least thats what I think its for).
I used root explorer to go into /system/apps and delete the GOOGLEBACKUPTRANSPORT.APK. I have never had any negative effect from doing it. It fixed the Android OS sucking up battery problem. Now I make it a point to delete it after flashing a rom regardless of whether batter drain is there or not. Never had that issue since.
Try it and see what happens. You can always just move it or rename it so you can put it back if it does not solve your problem.
illego said:
I used to have that issue on CM7 many moons ago. Did a bunch of searches and someone mentioned a process call GOOGLEBACKUPTRANSPORT.APK somewhere on XDA, that constantly runs even after you do not choose to backup to google (at least thats what I think its for).
I used root explorer to go into /system/apps and delete the GOOGLEBACKUPTRANSPORT.APK. I have never had any negative effect from doing it. It fixed the Android OS sucking up battery problem. Now I make it a point to delete it after flashing a rom regardless of whether batter drain is there or not. Never had that issue since.
Try it and see what happens. You can always just move it or rename it so you can put it back if it does not solve your problem.
Click to expand...
Click to collapse
I'm trying this now, I'll report back. Thanks
I'm joining this club.
Mine S2 is having the same problem since yesterday....
System uses 39% and keeps my phone awake for 6 hours now.
Would like to add a screenshot but I can't
Info:
Model: GT-I9100
Version: 4.0.3
Baseband: I9100XXLPQ
Kernel: [email protected] #3
Build: Lite'ning ROM v2.1
thaizz said:
I'm joining this club.
Mine S2 is having the same problem since yesterday....
System uses 39% and keeps my phone awake for 6 hours now.
Would like to add a screenshot but I can't
Info:
Model: GT-I9100
Version: 4.0.3
Baseband: I9100XXLPQ
Kernel: [email protected] #3
Build: Lite'ning ROM v2.1
Click to expand...
Click to collapse
Post to the Google Code bug
Just wondering if there have been any discoveries or new info on this problem.
I was experiencing this bug for a long time and I thought it was a bad battery. After replacing my battery it was still happening.
Battery life is the sole reason I went from ICS Passion (4.0.3) to Slim ICS (4.0.4).
I think battery life is better now, but I've also been incrementally restoring all my apps, ensuring battery drain isn't unreasonably affected with each restore.
I have this same issue! My battery lasted up to a day yesterday and today I had to charge my phone twice. Lasted only 4 hours. Pretty ridiculous I would say! I did try removing googletransport.apk and it reduced my android os to 25% or so from 60% that's about it.
Sent from my SGH-T959 using xda premium
Try using any of the ROMs on Android 4.0.4
EXROM
SLIM ICS
ZenWick
I too was on ICS Passion. I noticed a huge battery improvement when moving to the ROMs listed above (4.0.4 based)
xdaboualem said:
Try using any of the ROMs on Android 4.0.4
EXROM
SLIM ICS
ZenWick
I too was on ICS Passion. I noticed a huge battery improvement when moving to the ROMs listed above (4.0.4 based)
Click to expand...
Click to collapse
I was hoping for a work around sigh .
Sent from my SGH-T959 using xda premium
illego said:
I used to have that issue on CM7 many moons ago. Did a bunch of searches and someone mentioned a process call GOOGLEBACKUPTRANSPORT.APK somewhere on XDA, that constantly runs even after you do not choose to backup to google (at least thats what I think its for).
I used root explorer to go into /system/apps and delete the GOOGLEBACKUPTRANSPORT.APK. I have never had any negative effect from doing it. It fixed the Android OS sucking up battery problem. Now I make it a point to delete it after flashing a rom regardless of whether batter drain is there or not. Never had that issue since.
Try it and see what happens. You can always just move it or rename it so you can put it back if it does not solve your problem.
Click to expand...
Click to collapse
Wow, this worked beautifully, thanks a mil illego.
Installed ICS Passion v13.1 a few days ago and had severe battery drainage, from 100% to 0% in 8 hours after calibration.
Looking at the battery stats I realized that the phone was always in AWAKE mode, with ANDROID SYSTEM sapping like 80%.
After renaming GOOGLEBACKUPTRANSPORT.APK the phone finally went into much needed sleep mode.
In hindsight, I enabled Google "Backup this Phone" during first ICS setup, and this must've tried to connect to the internet the whole time or had a process keeping the phone awake.
Brilliant fix, you made my day, thx.
I was using ICSSGS's 4.0.3 and noticing that my battery was draining pretty quick with little or no use.
I decided to try the Dark Knight 4.0.4 rom and my battery life has pretty much doubled.
No lock screen issues now either!
SlimICS!
I have been using SlimICS and have never had any batt drain issues. Googlebackup.apk is removed by default from this ROM.
I never get good battery life on a ics rom, tried on 3 different phones with 6 different roms. It looks nice but isn't battery friendly from my experience.
[bman123] said:
I never get good battery life on a ics rom, tried on 3 different phones with 6 different roms. It looks nice but isn't battery friendly from my experience.
Click to expand...
Click to collapse
You must have one or more apps draining your battery.
User betterbatteryStats or "BadAss battery monitor" to check where battery is being used and whether any app is keeping the phone awake.
I agree
I have to agree. When I use a Froyo Rom my phone loses .5% per hour in idle. At times it loses a max of 1% per hour. However, with ICS ROMs I lose around 1.7% per hour. I have tried just about all ICS Roms, and all Kernels. While some are better than others, 1.7% per hour is pretty standard with any ICS. Trust me, I have no deep sleep issues, and no abnormal wakelocks. I've read all the post of saving battery life, and done them all. Roughly 1.7% per hour is what I get with any ICS Rom.
Personally, I like the look and feel of ICS so I just take the good with the bad. Can anyone shed some light on this. Why does ICS drain battery so quickly in idle vs older android versions. Or, is it just the Vibrant? Im stumped.

[Q] upgrade to ICS or not?

I have a galaxy tab p7500 surprisingly with micro sd slot when i got it has android 3.1 p7500 xxkg7 kernel 2.6.36.3 build hmj37 p7500jpkg6 so i checked update OTA and via kies but no update was available and i upgraded it with odin to P7500JPKL2_P7500OJPLB1_P7500XXKL3 as i live in pakistan so i found jpkl2 latest available for my region but it is HC 3.2 . now i am thinking to upgrade it to ICS again via odin but i have some doubts when i read about ICS there are many discussions regarding bad battery performance on ICS like battery drain issues so please advice me should i upgrade via odin to official ICS and if answer is yes then which version of official ICS as there are many available even some are released in september for australia region.is the battery drain issue fixed in latest released ICS and is it better stability wise then previously released ICS versions.Please answer my condusions.Thanx
Ferashtc said:
I have a galaxy tab p7500 surprisingly with micro sd slot when i got it has android 3.1 p7500 xxkg7 kernel 2.6.36.3 build hmj37 p7500jpkg6 so i checked update OTA and via kies but no update was available and i upgraded it with odin to P7500JPKL2_P7500OJPLB1_P7500XXKL3 as i live in pakistan so i found jpkl2 latest available for my region but it is HC 3.2 . now i am thinking to upgrade it to ICS again via odin but i have some doubts when i read about ICS there are many discussions regarding bad battery performance on ICS like battery drain issues so please advice me should i upgrade via odin to official ICS and if answer is yes then which version of official ICS as there are many available even some are released in september for australia region.is the battery drain issue fixed in latest released ICS and is it better stability wise then previously released ICS versions.Please answer my condusions.Thanx
Click to expand...
Click to collapse
I've tried the India version of the ICS official update and there aren't too many issues with stability compared to the sucky Honeycomb that came on it. I've also tried several CM 9, 10 and AOKP ROMs on the P7500.
Does the ICS ROM drain your battery more than the HC ROM? Yes, in my experience.
Is it worth it? Hell yeah.
In the end, the choice is yours.
I think you definitely should upgrade, the new ics is much smoother and better overall.
Sent from my DROID X2 using Tapatalk 2
Ferashtc said:
I have a galaxy tab p7500 surprisingly with micro sd slot when i got it has android 3.1 p7500 xxkg7 kernel 2.6.36.3 build hmj37 p7500jpkg6 so i checked update OTA and via kies but no update was available and i upgraded it with odin to P7500JPKL2_P7500OJPLB1_P7500XXKL3 as i live in pakistan so i found jpkl2 latest available for my region but it is HC 3.2 . now i am thinking to upgrade it to ICS again via odin but i have some doubts when i read about ICS there are many discussions regarding bad battery performance on ICS like battery drain issues so please advice me should i upgrade via odin to official ICS and if answer is yes then which version of official ICS as there are many available even some are released in september for australia region.is the battery drain issue fixed in latest released ICS and is it better stability wise then previously released ICS versions.Please answer my condusions.Thanx
Click to expand...
Click to collapse
Yes, upgrade, but you will need to install A1 kernel and overclock so that the tab will have the necessary performance (and more) and you will not have propblems to enter the CPU in deep sleep (battery drain issue).
jaswinky said:
Yes, upgrade, but you will need to install A1 kernel and overclock so that the tab will have the necessary performance (and more) and you will not have propblems to enter the CPU in deep sleep (battery drain issue).
Click to expand...
Click to collapse
but i want to go on with official stuff only as the custom roms are modified always.may be i will wait till i know which build of official ICS for p7500 is most stable and with out battery drain problems.overclock improves performance but why the samsung guys dont overclock the official builds.Can we know some how which ICS version released so far is most stable?
Ferashtc said:
but i want to go on with official stuff only as the custom roms are modified always.may be i will wait till i know which build of official ICS for p7500 is most stable and with out battery drain problems.overclock improves performance but why the samsung guys dont overclock the official builds.Can we know some how which ICS version released so far is most stable?
Click to expand...
Click to collapse
Some coments:
1. A1 kernel is not a modified ROM as CMx, but just a half-modified kernel which prevents bricks (emm_cap_erase), oveclocks gpu and cpu, and let you charge the tab from any USB port.
2. If you wait for a stock ics or jb rom with better performance than actual stock roms, surely you will watch before on tv the first step of the man over mars.
3. The reason why samsung or any other manufacturers don't overclock the devices is the same reason why a elevator can technically support 7.500kg weight, but the plate says max. 750kg/10 pers... ie, the tab supports higher freq, but depending of some ambiental and manufacturing conditions one tab could works lightly different than other tab on same freq (and so, same cpu voltages). Because this undervolting could affect by different way on different tabs of same model. The manufacturer finally set a nominal freq which sure them the tab will not give probelms in a determined life time (this is quality).
Enviado desde mi GT-P7510 usando Tapatalk 2
jaswinky said:
Some coments:
1. A1 kernel is not a modified ROM as CMx, but just a half-modified kernel which prevents bricks (emm_cap_erase), oveclocks gpu and cpu, and let you charge the tab from any USB port.
2. If you wait for a stock ics or jb rom with better performance than actual stock roms, surely you will watch before on tv the first step of the man over mars.
3. The reason why samsung or any other manufacturers don't overclock the devices is the same reason why a elevator can technically support 7.500kg weight, but the plate says max. 750kg/10 pers... ie, the tab supports higher freq, but depending of some ambiental and manufacturing conditions one tab could works lightly different than other tab on same freq (and so, same cpu voltages). Because this undervolting could affect by different way on different tabs of same model. The manufacturer finally set a nominal freq which sure them the tab will not give probelms in a determined life time (this is quality).
Enviado desde mi GT-P7510 usando Tapatalk 2
Click to expand...
Click to collapse
ok i will do as you say but which version of official ICS should i use with A1 kernel plz suggest me according to my recent Rom P7500JPKL2_P7500OJPLB1_P7500XXKL3 and also explain briefly steps to do so as i have updated my p7500 only once via odin.if i upgrade as you say then the battery life will be same as of HC 3.2?will the cameras work?also i was reading that charging via usb does not give required voltage and it takes much more time to charge the tab.
Ferashtc said:
ok i will do as you say but which version of official ICS should i use with A1 kernel plz suggest me according to my recent Rom P7500JPKL2_P7500OJPLB1_P7500XXKL3 and also explain briefly steps to do so as i have updated my p7500 only once via odin.if i upgrade as you say then the battery life will be same as of HC 3.2?will the cameras work?also i was reading that charging via usb does not give required voltage and it takes much more time to charge the tab.
Click to expand...
Click to collapse
I think last oficial version for p7500 is xwlp6 in sammobile.com , you can flash it using odin and then you can flash A1 kernel to improve the performance allowing overclock.
About usb charging, you read wrong, it's nothing to do of voltage (allways 5V for usb), but with currents. Here is the explanation (see my last post):
http://forum.xda-developers.com/showthread.php?t=1918223
Enviado desde mi GT-I9100 usando Tapatalk 2
so guys finaly i made my mind after suggestions from u and upgraded via odin to indian ICS P7500XWLP5_P7500ODDLP5_P7500XXLQ8_INU as i read that italian ICS has some bugs.what i found in ICS is it is very smooth,fast and beautiful then HC3.2.i like it very much.so far didnt use it much as i upgraded at night before sleep but i turned off wifi and left it on with battery 85% and then i checked after 7 hours and 30 min and battery dropped to 77% so it consumes 1% in 1 hour so far so u guys tell me is it ok ?(i didnt switched to aeroplane mode as i didnt find it anywhere).today again i will use it and compare battery life.Now as jaswinky suggested to flash it with kernel A1 i decided to 1st use it for sometime without kernel A1 and meanwhile read some more about the process of flashing with kernal A1 as it is little bit complicated process.
Guys should i try this method in link below to fix 1% battery drain for 1 hour or is it ok to have battery 1 % drop/hour while not using it.
http://forum.xda-developers.com/showthread.php?t=1840344
Ferashtc said:
Guys should i try this method in link below to fix 1% battery drain for 1 hour or is it ok to have battery 1 % drop/hour while not using it.
http://forum.xda-developers.com/showthread.php?t=1840344
Click to expand...
Click to collapse
All us have this aprox. 1% per hour battery drain. It is ok, it means more than 4 days on with the screen off (!!). What more you need??
Dude, punctuation, capitalization and grammar are your friends and will make your posts a lot easier to read and understand.
ok Jaswinky i checked again with aeroplane mode on and battery dropped 5% in approx 8 hours so it is less then 1% in aeroplane mode on and approx 1 % with aeroplane mode off without sim card inside so i think this indian ICS version dont have battery drain issue but the guy from link claims to have no battery drop by disabling google services framework tell me is it worth trying?
http://forum.xda-developers.com/show....php?t=1840344
Ferashtc said:
ok Jaswinky i checked again with aeroplane mode on and battery dropped 5% in approx 8 hours so it is less then 1% in aeroplane mode on and approx 1 % with aeroplane mode off without sim card inside so i think this indian ICS version dont have battery drain issue but the guy from link claims to have no battery drop by disabling google services framework tell me is it worth trying?
http://forum.xda-developers.com/show....php?t=1840344
Click to expand...
Click to collapse
If you use autostarts to disable some google services, you probably will not be notified of some issue as gmail, calendar, etc. You should be care using autostarts. I use autostarts to completelly disable start formsome third programs and games, and also maps, facebook, google+, that's all.
If you are not happy with having the tab with more than 4 days battery with the tab on and screen off, you can try different roms and kernels.... i am happy with this battery situation.
Regards,
Enviado desde mi GT-P7510 usando Tapatalk 2
something bad started happening last night i left tab in airplane mode on and screen off and battery dropped from 70% to 31% after approx 12 hours when i checked in day so now it consumes 3% per hour.i made sure that no program is running in backgroud wifi was off,i dont use sim mobile data off.it surprised me a lot as 1st night it consumed 1% per hour but 2nd night 3 % per hour that is too much means that if i dont put it on charge battery will drain in 1 day.plz suggest what i can do or try.
As i was reading about this problem i found some1 suggested to use cpu tuner application it is free should i give it a try?
Also some guys told to change option for background processes to off or disable to no background processes in settings -developer option if i do it will it help,do it effect the performance of tab & is it ok if i disable it only at night before sleep and again turn it on for normal usage.
some1 also suggested to turn off account & sync in settings saying this conserves the battery.do it help?i use only gmail account for google play store
jaswinky said:
All us have this aprox. 1% per hour battery drain. It is ok, it means more than 4 days on with the screen off (!!). What more you need??
Click to expand...
Click to collapse
You are right. And with the old Galaxy S, I had only one day - with not a lot of phone calls! So, with more than 24 hours, I'll be happy at all.
Ferashtc said:
something bad started happening last night i left tab in airplane mode on and screen off and battery dropped from 70% to 31% after approx 12 hours when i checked in day so now it consumes 3% per hour.i made sure that no program is running in backgroud wifi was off,i dont use sim mobile data off.it surprised me a lot as 1st night it consumed 1% per hour but 2nd night 3 % per hour that is too much means that if i dont put it on charge battery will drain in 1 day.plz suggest what i can do or try.
As i was reading about this problem i found some1 suggested to use cpu tuner application it is free should i give it a try?
Also some guys told to change option for background processes to off or disable to no background processes in settings -developer option if i do it will it help,do it effect the performance of tab & is it ok if i disable it only at night before sleep and again turn it on for normal usage.
some1 also suggested to turn off account & sync in settings saying this conserves the battery.do it help?i use only gmail account for google play store
Click to expand...
Click to collapse
Probably your tab is not entering in deep sleep. You should check it with setcpu or system tuner or similar app to discard it is your problem. If you are entering in deep sleep, check battery uses to see the wake up frequency and the top battery draining apps.
Enviado desde mi GT-P7510 usando Tapatalk 2
well i got good results last day it was like 10% drop in 8 hours with some changes i made in settings.For me sync was already off i have only gmail&samsung accounts there.i turned off in settings mobile data data usage&in wifi i changed it to only when plugged in.well it is amazing if these 2 changes can give me such good results.below are screen shots.but i think problem is still there as tab didnt go into deep sleep in both pics &constantly using 216 Mhz..Now i will try to root my tab and install betterbatterystats application to check why 216 Mhz is used always,yesterday i tried to root on tab by putting root.zip in root directory but it didnt work for me so i think i will have to root with help of odin with recovery file.I have one doubt as the cpuspy was running as application all this time so may be it is responsible for using 216 Mhz?Plz help
Ferashtc said:
well i got good results last day it was like 10% drop in 8 hours with some changes i made in settings.For me sync was already off i have only gmail&samsung accounts there.i turned off in settings mobile data data usage&in wifi i changed it to only when plugged in.well it is amazing if these 2 changes can give me such good results.below are screen shots.but i think problem is still there as tab didnt go into deep sleep in both pics &constantly using 216 Mhz..Now i will try to root my tab and install betterbatterystats application to check why 216 Mhz is used always,yesterday i tried to root on tab by putting root.zip in root directory but it didnt work for me so i think i will have to root with help of odin with recovery file.I have one doubt as the cpuspy was running as application all this time so may be it is responsible for using 216 Mhz?Plz help
Click to expand...
Click to collapse
1- Nope, CPU SPY is not respnsible.
2- You don't need to root to run better battery stats.
3- You will probably find out that the responsible is a l2_hsic wakelock. You will have to go to settings, more, kernel wakelocks.
Ferashtc said:
well i got good results last day it was like 10% drop in 8 hours with some changes i made in settings.For me sync was already off i have only gmail&samsung accounts there.i turned off in settings mobile data data usage&in wifi i changed it to only when plugged in.well it is amazing if these 2 changes can give me such good results.below are screen shots.but i think problem is still there as tab didnt go into deep sleep in both pics &constantly using 216 Mhz..Now i will try to root my tab and install betterbatterystats application to check why 216 Mhz is used always,yesterday i tried to root on tab by putting root.zip in root directory but it didnt work for me so i think i will have to root with help of odin with recovery file.I have one doubt as the cpuspy was running as application all this time so may be it is responsible for using 216 Mhz?Plz help
Click to expand...
Click to collapse
No app will solve your problem except a right kernel. You must solve asap your no deep sleep state entering issue, and usually it is because the kernel. Try a different kernel as A1 kernel (you have ICS right?), you need to root before, and try both min freq 150 and 216 (i use 150 but some people reported that they need to set to 216 min freq to enter deep sleep).
EDIT: before flashing a different kernel, try to clean the installed kernel by doing wipe cache partition and wipe dalvik cache (from CWM Recovery in rooted device). Some times it works to solve the deep sleep issue.
Enviado desde mi GT-P7510 usando Tapatalk 2

[POLL]Battery life in JB is.....

Please post your battery life experience in here. I am doing this because if Samsung does come here from time to time, let us show them how many users experience poor battery life with the JB rom. Also, let us ignore wipes or full resets since people may receive this update via OTA or Kies and they should not have to do a full wipe or reset to get a good battery life.
No doubt it is better.
Why make another thread....
Sent from my GT-I9300 using xda app-developers app
It's definitely about 30% worse.
Common, do you really think project butter is free?
parhelion69 said:
It's definitely about 30% worse.
Common, do you really think project butter is free?
Click to expand...
Click to collapse
Yeah I think because my batter life is so damn good.
jb
mine is better than ics in jb. using android revolution hd 12.
If i fully charge mine before i go to, then by the time i wake up after about 7 hours, ive only lost 2% battery power.
Thats with data still so not in flight mode or with the phone turned off.
Sent from my GT-I9300 using xda premium
I've tried litterally every JB leak so far inckuding the official ones.
I got sick of having bad battery life on all of them, no matter if I wiped etc.
So two weeks ago I put the very first stock rom on my phone (dated may!), and let it run auto updates from my carrier.
It ended up on LH3 and the battery life is night and day better. I'm getting over 24 hours easy now with what I consider to be decent use -phone calls, lots of facebook, whatsapp, browsing and at least 90 mins of mp3 playback each day. I leave wifi, 3g and BT one the whole time and it always gets over 24 hours.
Today though I flashed the newest UK Hutchison 3G official JB as it's my carrier. I'm going to see how this goes but I'm not expecting it to keep up with ICS. I'll be very happy if it does though.
It was terrible on JB for me (less than 24 hours of moderate use).
I disabled google now and installed juice defender and I get at least 2 days and maybe 3 if lighter use.
Swedish ROM is by far the best in battery life.
Sent from my GT-I9300 using Tapatalk 2
Battery life for keeps getting better with each jellybean update. Currently on omega v28 with perseus kernel and battery life is the best its ever been. 24hrs easily with 5± hrs screen time.
On Jellybean i get 6hrs on screen at 25% brightness and 16hrs idle with Wi-Fi off during sleep and whilst using mobile data
WanamLite 4.0, Siyah 1.7RC1 -100mv CPU and -100/-125mv GPU coupled with dualcore only at 1.2Ghz and touch-boost for 600Mhz at results are shown above and below whilst remaining lag free
Other tweaks: EXT4 optimizations, Multi-tasking fix, SQLite tweaks, SD card cache increase for internal&external to help maintain speed
16 hours max and my battery is empty, crazy...
mdfpido said:
Swedish ROM is by far the best in battery life.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Try switching radio?
Sometimes, battery need more than 2days to settle down. It took me 1week to start seeing my battery performing on par with ICS rom.
Sent from my GT-I9300 using xda app-developers app
With Google Now: Very bad.
Without Google Now: As good as ICS (very good)
On Polish ROM
monoespacial said:
With Google Now: Very bad.
Without Google Now: As good as ICS (very good)
On Polish ROM
Click to expand...
Click to collapse
Agreed.
People complaining about battery life: Disable Google Now and untick every option in Maps!
You will see a huge difference.
Black Dawg Down said:
Agreed.
People complaining about battery life: Disable Google Now and untick every option in Maps!
You will see a huge difference.
Click to expand...
Click to collapse
If you disable Google Now it just disables the notifications that it gives you and you can still make searches right?
Ics was much better
Gesendet von meinem GT-I9300 mit Tapatalk 2
Disabled Google Now, and all maps options.
Battery life is epically rubbish, as expected.
Back to ICS I go.

s2 in jb 4.1.2 battery life

hi. I am o supernexus build 5 wth siyah kernel. I got round 7 hiurs if heavy usage on gs2. I've done facebook, viber, internet using stock browser and downloading around 200mb zip file. what can you say about this battery life. its my first time to use gs2 and I am using 2000mah. the battery life seems pretty bad in my opinion. I will attach screenshot of my hardware info, battery use and screen time. hoping for any opinions out there
Sent from my GT-I9100 using xda app-developers app
I think is good , for me with stock battery (1650mah) i get 3 hours and 30-40 minutes (screen on time), wifi on , screen brightness auto
Send from my SGS2 I9100 with HassanROM and latest DorimanX 8.xx kernel
I think the battery life should be better with a 2000mah battery..
Is the battery properly callibrated??
krazy1101 said:
I think is good , for me with stock battery (1650mah) i get 3 hours and 30-40 minutes (screen on time), wifi on , screen brightness auto
Send from my SGS2 I9100 with HassanROM and latest DorimanX 8.xx kernel
Click to expand...
Click to collapse
oh really that means I should be getting better because I am on 2000mah but it seems not. Im not sure what's the problem if its the battery or the kernel. I also used an ICS firmware from Samsung I9100TDULP4. I don't know if that affects the battery life
Sent from my GT-I9100 using xda app-developers app
peRFect! said:
I think the battery life should be better with a 2000mah battery..
Is the battery properly callibrated??
Click to expand...
Click to collapse
Well I dont know if it is properly calibrated. By the way I got this unit from my uncle so I am not really sure if the battery is still good. How do we know if its still good. I dont know how old is this battery. How do we calibrate the battery and does the room affect this battery life?
Sent from my GT-I9100 using xda app-developers app
by the way I just installed this rom A week ago. The battery takes 3-4 hours to be charged using my xperia charger
Sent from my GT-I9100 using xda app-developers app
I have suggestion for you , go to miuiandroid.com and download the latest build , install Siyah Kernel v6.0b5 with that and you will love the battery timing on that (Trust me, i am using it right now)
Mr.KiLLeR said:
I have suggestion for you , go to miuiandroid.com and download the latest build , install Siyah Kernel v6.0b5 with that and you will love the battery timing on that (Trust me, i am using it right now)
Click to expand...
Click to collapse
you mean downloading the miui rom? yeah definitely I'll give it a try after slimbean which I will try if I see no improvement on the bAttery. Has anyone had 2000mah and siyah kernel with supernexus rom build 5? What are your timings?
Sent from my GT-I9100 using xda app-developers app
infinitylook said:
you mean downloading the miui rom? yeah definitely I'll give it a try after slimbean which I will try if I see no improvement on the bAttery. Has anyone had 2000mah and siyah kernel with supernexus rom build 5? What are your timings?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
I have tried Slim Bean too and after trying that i came to Miui Rom
anyone who have experience with 2000battery
Sent from my GT-I9100 using xda app-developers app
anyone who have experience with 2000battery
Sent from my GT-I9100 using xda app-developers app
right now I am using the original 1650 mah stock battery of s2. I've been doing a lot of file transfers as of this moment via e.s. file explorer and currently I am transferring almost 13gb of data via wifi from my laptop. its been awake for 4 hours now with screen time of 1 hour and 30min. e.s. file explorer is keeping the system awake for 3 hours. I did some facebook and viber chats. screen at 35% brightness.. do you think this is the expected life of the stock battery? I am fairly new to samsung and I found the battery life to be disappointing even with the stock jelly bean rom from samsung. I will post some pics of the battery stats and cpu stats from cpu spy. another thing though. is there a good app from the market where I can test my two batteries and compare them? thank you
Sent from my GT-I9100 using xda app-developers app
infinitylook said:
right now I am using the original 1650 mah stock battery of s2. I've been doing a lot of file transfers as of this moment via e.s. file explorer and currently I am transferring almost 13gb of data via wifi from my laptop. its been awake for 4 hours now with screen time of 1 hour and 30min. e.s. file explorer is keeping the system awake for 3 hours. I did some facebook and viber chats. screen at 35% brightness.. do you think this is the expected life of the stock battery? I am fairly new to samsung and I found the battery life to be disappointing even with the stock jelly bean rom from samsung. I will post some pics of the battery stats and cpu stats from cpu spy. another thing though. is there a good app from the market where I can test my two batteries and compare them? thank you
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
To callibrate battery..first completely drain the battery to about 5%, then charge the phone non stop without disturbing it till 100% and immediately remove the charger..again fully drain the battery and follow the above steps and u will get better battery life after a few cycles!
About roms..battery life does differ from rom to rom...i suggest u could check the custom kernels packed with zzmoove governor, ithat particular governor definitely improves the battery backup!
And in the above post es file explorer is eating ur battery..for that u should download greenify and hibernate apps continuously running in background!
great. I will follow your steps. one more thing. how can I know if the battery is still good or if its still holding the proper charge its suppose to have? thanks
Sent from my GT-I9100 using xda app-developers app
best I can get is about 3 days standby in jb stock.
I use the 2000mAh battery is primary battery.. no big surprise to expect here, capacity is just 21% more by construction...
With wifi on, JB burns in my case about 3% in IDLE.. stock kernel.. and about 5% in 3G mode, IDLE.. then battery drains more or less fast depending on screen on, phone calls etc. I use the phone extensively for work (email sync & replies, phone calls, sms and voip) and i have to topup the battery twice or trice a day!
Have tried various custom kernels with all sort of magic to reduce battery drain.. more or less effectively.. sometimes with less stability.
Right now trying out latest dorimanx 8.27.. seems thatn IDLE with WIFI on drains around 2% per hour.. better than stock.. still not quite awesome
I miss the GB battery life.. but JB is so beautiful in comparison, I cannot go back!
jmarcnms said:
I use the 2000mAh battery is primary battery.. no big surprise to expect here, capacity is just 21% more by construction...
With wifi on, JB burns in my case about 3% in IDLE.. stock kernel.. and about 5% in 3G mode, IDLE.. then battery drains more or less fast depending on screen on, phone calls etc. I use the phone extensively for work (email sync & replies, phone calls, sms and voip) and i have to topup the battery twice or trice a day!
Have tried various custom kernels with all sort of magic to reduce battery drain.. more or less effectively.. sometimes with less stability.
Right now trying out latest dorimanx 8.27.. seems thatn IDLE with WIFI on drains around 2% per hour.. better than stock.. still not quite awesome
I miss the GB battery life.. but JB is so beautiful in comparison, I cannot go back!
Click to expand...
Click to collapse
Does Jb stock for you has better life or does custom rom have more? I really like the custom roms but as per observation stock rom offers more battery time. Right now I just reverted to stock rom i9100xwlss. Touchwiz really sucks. Supernexus is really beautiful but offers less battery (but I will have to try yet their latest build). Also one of the reasons for going back to stock is the camera shot quality. Custom roms really have poor camera quality. I guess when it comes to lowlight shots the stock roms are best. So much for that. Does stock rom offer more battry for you or custom rom does?
Sent from my GT-I9100 using xda app-developers app
SGS2 Battery Life on 4.1.2
infinitylook said:
hi. I am o supernexus build 5 wth siyah kernel. I got round 7 hiurs if heavy usage on gs2. I've done facebook, viber, internet using stock browser and downloading around 200mb zip file. what can you say about this battery life. its my first time to use gs2 and I am using 2000mah. the battery life seems pretty bad in my opinion. I will attach screenshot of my hardware info, battery use and screen time. hoping for any opinions out there
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Below is a reply in some other forum by Samsung offcials regarding a specific method to Hard-Reboot your phone after a Firmware update: This method particularly helped me improve the battery life on SGS2 after 4.1.2 update.
"1. I’m sorry you are having issues with your device after upgrading the firmware. I can understand your frustration about this.
Old systems settings can be left on the phone after an update occurs, which is why we usually recommend a full factory reset after updating. If this isn’t done your device may begin to give false readings from system resources, or experience technical problems, which may explain the issue you are having.
We would advise on doing the following, which is designed to reset the settings on your device. Please back up your device using Samsung KIES before you do this.
1) Remove the battery for at least 40 minutes, put the battery back in and allow it to fully discharge. Afterwards, perform a full battery charge with the device turned off. Do not interrupt the charging process.
2) After the battery is fully charged, we would like you to perform a full factory reset, which can be done via Settings > Backup > Reset.
This process will reset your device, remove old system files that are no longer needed and enable your device to operate normally again.
Please let us know if your device continues to experience problems after the reset so we can investigate further.
If you require any further assistance, please contact Samsung again and we will be more than happy to help.
Kind regards,
Stewart
Online Support Team
SAMSUNG Customer Support Centre
infinitylook said:
Does Jb stock for you has better life or does custom rom have more? I really like the custom roms but as per observation stock rom offers more battery time. Right now I just reverted to stock rom i9100xwlss. Touchwiz really sucks. Supernexus is really beautiful but offers less battery (but I will have to try yet their latest build). Also one of the reasons for going back to stock is the camera shot quality. Custom roms really have poor camera quality. I guess when it comes to lowlight shots the stock roms are best. So much for that. Does stock rom offer more battry for you or custom rom does?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Actually I only use stock JB.. and trying to get it last longer with some custom kernels.. recently trying snapdragon rom, which is stock JB as well but with some S4 apk made compatible with S2... tried some time back omega, vanila rootbox and some other android builds for s2.. but was facing few stability issues / bugs and also missed some features that i was getting from stock rom.. so i gave up with these... now just aiming at stability and if possible battery endurance.. but not at the cost of stability.

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