Hello guys, I have a P768 L9 (JB, rooted and bootloader unlocked) about 3 months and in the last three weeks he presented a strange behavior. It all started after a day it overheated, the battery reached 0% and hung. After that I started to pay attention to battery consumption and realized I was different. Consumption was approximately 10% per hour with no use in standby and all connections closed. I made hard resets, I started testing with other roms, even tested with Pacman (yes, the camera did not work), yet consumption remained high. Configured the fastdormancy and changed nothing. After that I went back to the original rom and started testing, installed juice defender and the consumption decreased to about 6% per hour, which I still think is a lot of battery. The BBS does not indicate anything that may be the cause of it, and Battery Drain Analyzer says the culprit is IDLE and Radio. I can not understand because also tested in airplane mode.
I made some screenshots (link below) and hope someone can help me, please!
https://www.dropbox.com/sh/gju9rl93u743399/9S82BZvgLd
thiagodecp said:
Hello guys, I have a P768 L9 (JB, rooted and bootloader unlocked) about 3 months and in the last three weeks he presented a strange behavior. It all started after a day it overheated, the battery reached 0% and hung. After that I started to pay attention to battery consumption and realized I was different. Consumption was approximately 10% per hour with no use in standby and all connections closed. I made hard resets, I started testing with other roms, even tested with Pacman (yes, the camera did not work), yet consumption remained high. Configured the fastdormancy and changed nothing. After that I went back to the original rom and started testing, installed juice defender and the consumption decreased to about 6% per hour, which I still think is a lot of battery. The BBS does not indicate anything that may be the cause of it, and Battery Drain Analyzer says the culprit is IDLE and Radio. I can not understand because also tested in airplane mode.
I made some screenshots (link below) and hope someone can help me, please!
https://www.dropbox.com/sh/gju9rl93u743399/9S82BZvgLd
Click to expand...
Click to collapse
I`m not too experienced with this but I`ve had this issue before and a battery calibration helped for me. Download this app and follow the instructions. It might solve it.
well, I've used this many times too = / thanks for trying to help
thiagodecp said:
well, I've used this many times too = / thanks for trying to help
Click to expand...
Click to collapse
If still on guarantee, i suggest you to get it there. Might solve it now but maybe the battery has suffer damage already.
Luis_D1 said:
If still on guarantee, i suggest you to get it there. Might solve it now but maybe the battery has suffer damage already.
Click to expand...
Click to collapse
I've already tested with another battery and the problem persists, the battery indicator seems a countdown like as before...
and worst of all is that I have no warranty because I bought my L9 in another country... sad guy
no data connection
Hi ;D
Where do you live / how good is your data connection, because it seems, that in your area there is none... And searching for data connetion may drain battery fast...
Minicuxn said:
Hi ;D
Where do you live / how good is your data connection, because it seems, that in your area there is none... And searching for data connetion may drain battery fast...
Click to expand...
Click to collapse
Thanks for trying to help, I live in Brazil, in the southern region, and have a good connection all the time and most of the time I leave the connections closed ... as I said, I tested also in airplane mode and the problem persists = /
I have a Galaxy SIII mini and the battery lasts two days away from the charger with the same use during the day ..
I have no idea what can be, love my L9 and I'm losing hope
people, no one is going through this? nobody knows what to do?
browsing the internet i find many android phones with this problem, but the solutions are specific to each model and never work for me
Related
As far as I know, this bug is related to gingerbread and not by samsung, somehow it is triggered randomly (some say google maps, others say wifi or games) and the root cause is unknown, that's why some people haven't experience it, a quick temp solution is to restart the device but this is just terrible solution..if you are affected pls help spread the word so the issue becomes a high priority in google, the issue is already raised here since Feb 2011 and a lot of people have already experienced it (I myself experienced it):
http: / / code.google.com/p/android/issues/detail?id=15057
but it is still under medium priority, unbelievable! do you remember the SMS bug? google got pressured when it was spread in forums and news site..I think we can do the same here..let's raid android forums and android news site
here's the thread detailing the bug:
http://forum.xda-developers.com/showthread.php?t=1039696
it happened to me once...as you said before i restarted the phone and everythnig was normal again..
battery drain was due to wi fi sharing(although it was turned off)..and
dialer(dont know why...nearly 20% battery drain...) mainly...
I reverted back to KE2, factory reset, rooted, froze the bloat and getting phenomenal battery life.
Sent from my GT-I9100 using Tapatalk
No never only time i get battery drain is the usual after flashing a rom .
jje
I'm on build KE3 and in 4 days I have experienced no battery drain. Every time I check battery usage; it's usually 50% display drain.
PDA: I9100BOKE3
PHONE: I9100BOKD1
CSC: I9100TMUKE3
wackyD said:
I reverted back to KE2, factory reset, rooted, froze the bloat and getting phenomenal battery life.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Hi mate,
I used madmack's ROM which is based KE7 to enable Arabic.
What does factory reset means? will I loose all this setup? also how do you do the reset?
What would be my options if I want to keep madmack's ROM?
Kind regards,
Sul
The battery on my UK Vodafone supplied SGS2 doesn't last long.
The battery usage shows the following:
1) Android OS 54%
2) Email 20% (I have an exchange account)
3) Display 12%
4) Cell standby 5%
3) The rest is divided up as Phone idle and Android System
This is after just over 11hours of it being turned on, with a 3G, no wi-fi, gps or bluetooth, and the battery is nearly drained.
Does anyone know what type of usage accounts for 'Android OS'. I have no idea why it uses so much of my battery. I don't use the phone that much, i'm not playing with apps and fiddling.
The 3G signal is for my Vodafone Sure Signal. Since it's local to my house, the transmit and receive power is very low, far less than if I were outdoors with a 3G signal.
I wondered if the various types of Sync's that are performed in the background are what's accounting for 'Android OS'.
I've turned off the live wallpaper now to see if that improves things, just in case that wallpaper keeps cycling even though the screen is off.
I'm not getting the monstrous drains some are reporting, but still a solid 21% of Android OS plus 5% of Android System (whatever the difference is there). I can't remember exactly if my Hero had the same amount, but I think it was lower than that.
Got the drain. A factory reset fixed the problem, and I'm gradually re-enabling services and accounts now.
Just enabled my second Google account now, and the results are a bit worrying. I'll post back when I know.
How can you find out the battery usage??? I can't find it anywhere on my SGS2, I want to know too
Sorry, I've found it...
Mine is (without sim card, wifi on)
Android OS : 16%
Display : 14%
Android system : 3%
Phone idle : 2 %
Cell standby 65%
Yep I get it. Maybe we could start a poll?
For anyone else experiencing this battery drain: Factory reset helped A LOT. Doesn't seem to matter much which sleep policy I have for Wifi either, and all my Google accounts are added now. Will be re-connecting some more accounts and changing some settings gradually over the next days. I'll post back if I find anything that breaks my newfound battery life.
anderssv said:
For anyone else experiencing this battery drain: Factory reset helped A LOT. Doesn't seem to matter much which sleep policy I have for Wifi either, and all my Google accounts are added now. Will be re-connecting some more accounts and changing some settings gradually over the next days. I'll post back if I find anything that breaks my newfound battery life.
Click to expand...
Click to collapse
same here. did a factory reset and the problem was gone. Will add more and more apps step by step and see if it comes back.
dont think theres a bug, its just how, samsung built the os
Sent from my GT-I9100 using XDA App
I had this problem on my S as well... seemed to happen randomly. Some days the phone would have stellar battery life, others it would die before the work day was over.
What's the point of doing a factory reset then loading up all the same stuff you had on it last time which will eventually lead you to the same problem?
Rooster19 said:
What's the point of doing a factory reset then loading up all the same stuff you had on it last time which will eventually lead you to the same problem?
Click to expand...
Click to collapse
well eventually you will be able to find out WHAT is causing the problem.
Rooster19 said:
What's the point of doing a factory reset then loading up all the same stuff you had on it last time which will eventually lead you to the same problem?
Click to expand...
Click to collapse
I'm asking my own too.
i had the same problem as Madcow29 my cell standby is 70% without sim and wifi on. 22 hours and the battery was emty
Hi all,
I've got my sg2 since june and since the first moment I have got the same problems. I had the stock ROM & kernel with android 2.3.3. The problems I experienced were these:
1) extreme low battery life (6-10 hours, with normal usage)
2) when using heavy apps, my s2 just suddenly turns of. When rebooting it, it has a battery drop of like ~15%. (this only occurs when battery is already bellow 40% left).
3) Like 5-20 times a day (it really difference day-to-day), I got the notification that I have to put my sg2 on a charger. - So the battery bar drops from example 80% to 1%. After like 1 or 2 minutes it just fills up back again to the 80% before. Sometimes when this occurs, it also turns in a few % (like 80% before, and afterwards 75%).
So what did I already tried to fix this?:
- bought new 1600mah battery > didnt solve the problem, conclusion: no hardware malfunction
- I thought the problems could be occured by the tiny space between the battery and the frame of the phone. So it had a lack in connection... So I filled up the little space with i tiny piece of paper> nope didnt helped.
- downloaded mutiply apps for battery saving, task killers, etc etc.> didnt help!
It's really really frustrating, and I'm guessing more and more it's just a software problem. I do have warranty/insurance on it, but i don't want to send my phone to a repairservice because then I've no phone for like 3 or 4 weeks.
So my last option for me was to try a custom ROM and Kernel. So last week I installed the Lite'ning ROM. I also followed up the advice to calibrate my battery, so i did.
And the first day it was running really smoothed! At the end of the day my battery was still alive and I've used it for over 20hours, so I was really statisfied... But a small sidenote: I had a really busy day at work, so I didnt use my phone that much.
So next day, used it alot more. After 5 hours it had only 50% left.... And that's not all, my phone turned off suddenly. Not once, not twice, but 5 times that day.
Seems all these solutions didnt help. The only positive thing of installing Lite'ning ROM is that i now have about 4 or 5 hours more battery life a day.. But if I use it alot, it shut downs a lot more. Wich lead in more battery drops after reboot.
I'm really desperate, and I really don't know what to do now. Does someone have got these really frustrating problems, and do you guys have got some solutions?
And one more question: is my warranty/issurance voided after installing the Lite'ning 6.1 ROM? or can it by tresspassed by using a Jig?
Tnx for your time, and I really really hope you guys can help me cause i'm really getting sick of all this. It's killing me!!!
ps. sorry for my bad english
your warranty is voided by installing custom rom but u can unroot and use the jig to remove counts in counter.
now apart from that it seems if u use your phone for 5-6 hours continuous it will drain the battery because main source of battery drain is the screen display but for moderate use it should be a little over a day.
i am unclear about your usage but still if you have doubts you should really get it checked at a service center.
I would flash back to stock, use the jig to clear the flash counter and exchange that phone, seems it has some type of hardware issue that could be related to temperature as it only shuts down when you use it.
My 0.02 cents
vickarul said:
your warranty is voided by installing custom rom but u can unroot and use the jig to remove counts in counter.
now apart from that it seems if u use your phone for 5-6 hours continuous it will drain the battery because main source of battery drain is the screen display but for moderate use it should be a little over a day.
i am unclear about your usage but still if you have doubts you should really get it checked at a service center.
Click to expand...
Click to collapse
My usage is definetly not THAT extreme, i guess moderate: I never watch movies or youtube, just some messages with WhatsApp, about 4 of 5 times a day checking Facebook, same for Twitter, always GPS off, some time of the day Wi-fi on, never play games, always closing apps on background.
i've got an example of my battery usage (this is one of the best battery usage days i got!!!):
imageshack.us/photo/my-images/809/sc20110622204452.jpg/
(Can't post direct link because i dont have 8 posts yet...)
Battery life the beginning .
better battery stats .
http://forum.xda-developers.com/showthread.php?t=1179809
check Wakelocks .
jje
Today step 2) happened to me
Hi guys, this is not an usual battery drain problem. I am more or less an advanced user of android but I´m writing here because I tried all my ideas and none of then worked.
I have 2 Neo V, stock. One day one of them started to have battery drain. Im talking about 6-7%/hour with no usage, the other one is around 1-2%. So with any use my phone don´t last more than 14h.
I started to check the usual(wifi policy, services running..), and don´t found anything, I switched the batteries between both to see if that was the problem but drain was still in the same phone.
I rooted the phone, tried BetterBatteryStats and CPUspy and all is OK, most of the time DeepSleeep etc.
After all I unlocked the bootloader with the S1tool testpoint etc and flashed some Cyanogen 9 rom + kernel, and the problem still persists.
I think there is nothing I can do and my phone is useless because I suppose I don't have warranty anymore.
Any ideas about what could be? Even if its hardware, what kind of hardware problem can make this high battery drain if the CPU is not working ?
Thx in advance
edit: In HTC we can also flash different RIL´s (radio interface layer) to improve signal db, avoid high battery consumes etc. There is something similar in NEO V? Because I didn´t find anything.
There are a couple things you can do:
1) Did you check that you had mobile signal all the time??, because losing mobile signal is THE biggest battery drain possible
2) Post some BetterBatteryStats screenshots so we can see what's happening under the hood
3) Try a different ROM/Kernel combination, that sometimes helps
And no, there's no RIL flashing here, just different ROMs/Kernel/Baseband combinations
I HAD the same problem
Even I faced a similar problem on my Neo V after getting FXP CM9. FXP 122 was fine. But FXP 123 and 124 drained the battery very badly(No considerable Deep Sleep in CM 9). So I switched to AOSP Polish blood. Battery life was excellent but it lacked customization, so I switched to AOKP v38+ AOSP kernel. Superb ROM but again not so good on battery (but better than CM 9). Yesterday I flashed the FXP 125 kernel. More than 5-6 hrs of WiFi, 15-20 calls and texting and some instagram and I still have 20%. I'm charging my phone now!!
I´ve uploaded some screens of bbs, cpuspy and batterydrain with wifi on and after switching it off.
Hope it reveals something, what really annoy me is the deep sleep activated most of the time, so I don´t really know what to search.
Just as I thought, what's happening to you is what happened to me a year ago and I thought changing phones would help.
Your problem is basically, bad signal, as you can see in screens 4,5 and 7,8 "No Data Connection" and "No or Unknown Signal" are preventing your phone from going into Deep Sleep, the problem comes from bad 3G signal (or just bad network signal if you don't have 3G) and that is known to basically eat up all your battery.
How is the network signal where you are???, because it looks like it's realllllyyyyy bad.
Akath19 said:
Your problem is basically, bad signal, as you can see in screens 4,5 and 7,8 "No Data Connection" and "No or Unknown Signal" are preventing your phone from going into Deep Sleep
Click to expand...
Click to collapse
Are you sure? Take a better look.
Or at least deep sleep graph. And those graphs "No Data Connection" and "No or Unknown Signal", are also ok(ven though the name is confusing a bit), I have the same.
I'm not COMPLETELY sure but this is exactly what happened to me a year ago with a Samsung Galaxy Mini, also if you look at graphs 4 and 7 Deep Sleep doesn't have as much time as the data and signal bars, to me that seems like those two are keeping the phone in wakelock state more than it is spending on Deep Sleep.
I´ve been experiencing this problem for weeks. About signal I tried everything because:
- Phone worked perfect with SIM and all bars (I live in the downtown of a big city)
- When the problem started to happen I switched to another phone and this one was working without SIMcard so there was no signal at all.
- Some days ago I used another SIM which also have all bars.
I Don´t think there is a problem of the signal . Also in my other phone, and as you can see, Deep sleep is working fine.
I reread your first post and the only hardware problem that I could think of is a faulty battery, did you use to leave it charging all night??, because that tends to burn the battery and it does hold a lot less charge.
According to what I've read, everything seems to be fine software side, my only idea would be that you reflashed stock ROM and check if the problem persists, reflash but don't restore any data, the problem could be a misbehaving app.
I have 2 Neo V (my father´s and mine) I switched batteries, and the problem persist in the same telephone. Also both of them have less than 2 months, so batteries are new.
Also revised the voltage in the CPU and it is alright.
Well, the only thing left to check (IMHO) is a misbehaving app or service, maybe check for task killers or battery savers in the "broken" phone, those are known to eat up the battery like it's ice cream!!
I believe I have the same problem. I can't remeber when it started since I tried lots of roms,
but I flashed latest ICS from pccompanion with no other tweaks for some days and it
continued the same.
I also thought about bad signal, but at night in flight mode it also spent 40% of the battery.
With a good kernel, undervolting, 2G... I can get to 15% 20% at night.
I've also switched batteries with other neo's and no difference.
Phone is 5 months old.
Not sure if it might come from the rooting process. If I understand right, the 0% issue
that some were having was more of hardware issue (or I'm completely wrong?) Then maybe
there is also something related?
ambrosiosanchez said:
I believe I have the same problem. I can't remeber when it started since I tried lots of roms,
but I flashed latest ICS from pccompanion with no other tweaks for some days and it
continued the same.
I also thought about bad signal, but at night in flight mode it also spent 40% of the battery.
With a good kernel, undervolting, 2G... I can get to 15% 20% at night.
I've also switched batteries with other neo's and no difference.
Phone is 5 months old.
Not sure if it might come from the rooting process. If I understand right, the 0% issue
that some were having was more of hardware issue (or I'm completely wrong?) Then maybe
there is also something related?
Click to expand...
Click to collapse
0% was a software related error (flashing GB 2.3.3 after having 2.3.4 broke the battery gauge firmware), however that problem doesn't exist on ICS, I find it reallt strange that both your phones have that problem, I've had my Neo for 8 months and the most battery I've lost overnight has been 10% (with CM9 and really bad signal).
Maybe the best thing you guys can do is send your phone to service.
I have a similar problem with my mt15:
when I buy my phone battery was ok. about two days with intensive social use, no gaming.
5 months later, battery drain begins: deep sleep and 8% per hour , airplane mode 8% per hour
tried almost every popular rom in development forum ICS stock, codename, tweaked, cm7.2, cm9, jjhybrid, KA, ...
tried every popular kernel: stock gb, stock ics, alliance, suave, super, nightelf, cm kernels...
battery drain happens while phone ON, happens with airplane mode, AND happens with PHONE TURNED OFF.
I thinked about battery fault. replaced my battery with a new genuine one. Same results.
If I remove the battery from phone, IT does not drain. 24h later battery is still 100%
So my neo has a hardware problem I think. And there are many people with same problem. look for "neo battery drain while off"
Neo is a buggy phone. you can be lucky, or not. but many people has these issues or 0%batt.
I give up!
After sony abandoned x10 mini pro (random reboots, eclair), I had given another chance to sony with neo. I like sony designs, but Im really tired.
sorry about my creepy english
Try freezing "Calendar" with Titanium Backup and see if battery lasts longer. It helped for me.
genyt said:
I have a similar problem with my mt15:
when I buy my phone battery was ok. about two days with intensive social use, no gaming.
5 months later, battery drain begins: deep sleep and 8% per hour , airplane mode 8% per hour
tried almost every popular rom in development forum ICS stock, codename, tweaked, cm7.2, cm9, jjhybrid, KA, ...
tried every popular kernel: stock gb, stock ics, alliance, suave, super, nightelf, cm kernels...
battery drain happens while phone ON, happens with airplane mode, AND happens with PHONE TURNED OFF.
I thinked about battery fault. replaced my battery with a new genuine one. Same results.
If I remove the battery from phone, IT does not drain. 24h later battery is still 100%
So my neo has a hardware problem I think. And there are many people with same problem. look for "neo battery drain while off"
Neo is a buggy phone. you can be lucky, or not. but many people has these issues or 0%batt.
I give up!
After sony abandoned x10 mini pro (random reboots, eclair), I had given another chance to sony with neo. I like sony designs, but Im really tired.
sorry about my creepy english
Click to expand...
Click to collapse
about battery drain when phone is off
its not consuming your battery while its off
when you are turning the phone on
cpu usage will be on 100% to run all necessary sevices and apps and most use goes to get signal
that's normal
i suppose its aroumd 3-5% of battery consume
im not gonna be at the same side with you
actually neo is a wonderful phone
i beated the score of sensation xe in antutu benchmark with it
just google it around the internet
there will be some fix mate..
Neo is not buggy at all maybe yours but not mine
this might work for you
i just found it
1-flash build 42 official rom on your device
2-root the rom (there are plenty of ways around internet)
3-flash this kernel via flashtool forum.xda-developers.com/attachment.php?attachmentid=780407&d=1321113977
4-now turn on the phone its gonna show 85% of battery
5-install this forum.xda-developers.com/attachment.php?attachmentid=897721&d=1329003275
6-plug the charger into your phone
7-from the menu of app select start full charge
its gonna take 3-3:30 to be full
may be you've seen it around web
i translated it from a persian forum
HIT THANKS IF I HELPED YOU
In my opinion, a phone broken by a software update/downgrade is buggy.
About battery draining while off, not all neo have this issue, but mine is not the only one.
On the other hand, about power consumption while booting, if i remove battery while off, wait some hours, and replace, after boot battery is 100%
Sent from my JJ's Hybrid MT15i
I had this problem too, even when the mobile was off, the battery was drained...
I sent my phone to after sales service and now it's normal drain 2 - 3% per hour when idle. (I was on stock rom and kernel, never changed).
There is maybe a bad hardware series
Hello people,
most of the time, during the night, I left my phone in Airplane mode and usually loose around 2% (~7 hours).
But since some weeks, I find my battery lose approx. 1% per hour...and I don't know why.
I tried to find wakelocks but nothing really evident -> http://forum.xda-developers.com/showpost.php?p=42248819&postcount=14809
So I'm wondering, if like me you're using sometimes the Airplane Mode, how much battery are you losing per hour ?
Thank you
I can use AP for about 10 hours (never tested longer), without losing a single percentage. Did you check for wakelocks?
1% if I hit snooze on the alarm 5-6 times over half an hour, 0% if I switch the alarm off as soon as it goes off (This is over 8-10 hrs).
Edit - Battery could be on the way out if you've had the phone for a while.
MistahBungle said:
1% if I hit snooze on the alarm 5-6 times over half an hour, 0% if I switch the alarm off as soon as it goes off (This is over 8-10 hrs).
Edit - Battery could be on the way out if you've had the phone for a while.
Click to expand...
Click to collapse
As I said, I already bought a new battery.
Donnie Sins said:
I can use AP for about 10 hours (never tested longer), without losing a single percentage. Did you check for wakelocks?
Click to expand...
Click to collapse
As you can see here there's nothing really obvious, for my part I do not see wakelocks
However, in normal usage, when I make some calls, I can see the battery draining much more than before.
I had some doubt about the open source RIL implemented in CM but I recently flashed an older nightlies (prior to open source RIL commits) and get the same drain in Airplane mode...around 1% per hour.
Anyway the small draining you get with your respective is showing that there's really something wrong on my phone.
The question is: What's wrong ?!
Thank you for replying
Quite weird, because I can't detect any bad wakelocks in that post either.. Maybe try another rom (Samsung based) to test it out? I don't use CM anymore so I can't say anything about it, but Samsung-based roms work really good.
No, you did not mention a new battery in your OP. This is the first time you've mentioned it.
Your OP:-
'Hello people,
most of the time, during the night, I left my phone in Airplane mode and usually loose around 2% (~7 hours).
But since some weeks, I find my battery lose approx. 1% per hour...and I don't know why.
I tried to find wakelocks but nothing really evident -> http://forum.xda-developers.com/show...ostcount=14809
So I'm wondering, if like me you're using sometimes the Airplane Mode, how much battery are you losing per hour ?
Thank you'
Where does it say 'the battery is new' or 'I've got a fairly new battery' or 'I just bought a new battery'.
A: It doesn't.
FredC94 said:
As I said, I already bought a new battery.
Click to expand...
Click to collapse
MistahBungle said:
No, you did not mention a new battery in your OP. This is the first time you've mentioned it.
Click to expand...
Click to collapse
My bad, sorry. I was sure to have mentioned that my battery was new. That being said, now you know that I changed the battery
Yesterday, I made a full wipe (again) ...factory reset, format /system, run GS2ROMNuke script then flashed the latest CM nightly.
After the first boot I just configured the Wi-Fi access point, my mail account and disabled location services. Nothing more than CM installed.
Then I waited the phone was in full charge (~2 hours),then disabled sync, Wi-Fi, switch in airplane mode and unplugged the power supply.
The phone has been left in this state for ~11 hours, believe me, the phone lose around 11% of battery.
I'm losing it
Anyone with an advice ?
Could it be due to the phone itself, some hardware faulty component ?
FredC94 said:
Anyone with an advice ?
Could it be due to the phone itself, some hardware faulty component ?
Click to expand...
Click to collapse
Since you're already testing it all now, why not try a Samsung based rom like I suggested..? Maybe it makes the difference for you.
Donnie Sins said:
Since you're already testing it all now, why not try a Samsung based rom like I suggested..? Maybe it makes the difference for you.
Click to expand...
Click to collapse
yep you're right and I'll probably flash a Samsung stock ROM
However, just for sharing, someone pointed me out this interesting thread where some users had the same issue.
Unfortunately, it seems to be an hardware related issue.
http://forum.xda-developers.com/showthread.php?t=2218300
thank you
Hi xda! So I've been having a problem for a couple of months with my SGSII and i have searched a lot but i haven't found a solution yet.
The problem is that battery behaves normally and has a normal drain rate, but when it reaches 40% more or less it drains massively and drops to 10 % (more or less, could be 11% or 9%. It is not something precise and accurate) and screen immediately starts to flicker, backlight as well, then the signal is lost and phone shuts down. After that i can not turn it on unless i charge it.
I have looked a lot and pretty much all of the forums recommended to buy a new battery. I bought another battery (original) and the problem still continued. I've also tried swapping batteries with a friend, but the problem still happened to me and not to him. Also I have tried a lot of Roms, I've tried going back to stock as well, but still nothing.
Currently I'm running Cyanogenmod 10.1 RC2 because it gives me the best battery life in those 60%.
I leave you an attachment of a screenshot. As you can see battery percent dropped a lot at the end, and i wasn't using it heavily.
Thank you in advance.
It is a hardware issue, I had the same problem (battery would drain below 10% though), sent it to Samsung, Motherboard and Charge Socket got replaced, I don't know which one was causing it because I had other issues like broken home button too.
brpper said:
Hi xda! So I've been having a problem for a couple of months with my SGSII and i have searched a lot but i haven't found a solution yet.
The problem is that battery behaves normally and has a normal drain rate, but when it reaches 40% more or less it drains massively and drops to 10 % (more or less, could be 11% or 9%. It is not something precise and accurate) and screen immediately starts to flicker, backlight as well, then the signal is lost and phone shuts down. After that i can not turn it on unless i charge it.
I have looked a lot and pretty much all of the forums recommended to buy a new battery. I bought another battery (original) and the problem still continued. I've also tried swapping batteries with a friend, but the problem still happened to me and not to him. Also I have tried a lot of Roms, I've tried going back to stock as well, but still nothing.
Currently I'm running Cyanogenmod 10.1 RC2 because it gives me the best battery life in those 60%.
I leave you an attachment of a screenshot. As you can see battery percent dropped a lot at the end, and i wasn't using it heavily.
Thank you in advance.
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May be there would be some hardware related problem. But why dont you give a try to to a wakelock detector app like betterbattery stats or wakelock detector? Atleast you will know which app is eating your battery or is it a hardware related problem.
Nexcore said:
It is a hardware issue, I had the same problem (battery would drain below 10% though), sent it to Samsung, Motherboard and Charge Socket got replaced, I don't know which one was causing it because I had other issues like broken home button too.
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Thank you for answering. Unfortunately I have already rooted my device hence voiding my warranty. Maybe i could have it fixed by some technician.
singhsidhartha said:
May be there would be some hardware related problem. But why dont you give a try to to a wakelock detector app like betterbattery stats or wakelock detector? Atleast you will know which app is eating your battery or is it a hardware related problem.
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I have tried a lot of battery related apps. BBS is one if them. I haven't seen anything unsual. In fact I've also tried apps like greenify. However battery life in the first 60% of battery is actually good. After 40% comes the problem.
Send it to samsung
Install triangle away and reset counter then flash stock jb rom from your country & provider
Sent from my GT-I9100 using XDA Premium 4 mobile app