Random reboot and phone's death for some days - Galaxy S II Q&A, Help & Troubleshooting

Hi everyone! I've a problem that's bothering me since i've bought this phone. Let's start from the first day when my beautiful gs2 arrived and there's no way it would turn on, i tried charge the battery but it didn't work too, it displayed the grey battery logo and then reboot in a loop. Then magically after some hours it started working. After a few months the phone started rebooting or powering off by itself and after a few more weeks it wouldn't turn on or charge like the first day and like that it returned to life after few days. I took it to a samsung point and they changed the usb connector.
It all worked fine for a few months and then here we were again and the phone died and turn to life after few days and also this time they changed the usb connector.
Now it's begun rebooting again and i think it won't turn on few weeks from now.
I've noticed that when the phone reboot there's a vertical drop in the battery charge, almost to zero, only to recharges by itself instantaneously after rebooting. Few days ago the phone didn't reboot but the battery charge went instantaneously from 60% to 10% and then started slowly charging by itself till almost 25%.
What do you think about it? I'm starting to think the problem is the battery chip that control the charge, is it possible? It's integrated in the battery right? so if i change it the gs2 would be ok?

i would personally try another battery.
if that doesnt work, it might be the u503 chip on the phone.
i recently had an issue with that chip after slight water damage (http://forum.xda-developers.com/showthread.php?t=2462207) and noticed the same issue with the battery level, and it not turning on sometimes. tried with 3 different batteries and had the same problem.
got rid of the u503 chip, and its working fine now.

The problem is i don't have another battery. I tried the battery of a friend and it came back to life but there's no way to tell if it did the trick because it's random. The other times one second it was dead and the next one it was working again even without changing anything.
In my case when the phone reboot it doesn't get hotter so i think it's different from yours. More over is still under warranty so it's better not to touch it yet

Related

[Q] Battery stuck at 0%, need battery replacement?

Suddenly my phone won't charge. Do I need a new battery?
Here's the details ...
Samsung Galaxy S2 (i9100)
CyanogenMod 10.1 Nightly (10.1-20121229-NIGHTLY-i9100).
I've had it for almost 2 years.
If I leave it plugged in, everything works fine. I can boot it up and use it normally. The lockscreen display and status bar indicate that it's charging, but it stays at 0%. If I unplug the charger, it shuts down right away.
It also seems warmer than it should be while plugged in, but I'm not certain that's part of the problem.
The results are the same whether I use the charger or a USB cable connected to the computer.
There's an immediate reaction when I plug it in or unplug it, so I don't think there's anything wrong with the charger or the port.
I've tried removing and re-inserting the battery with no change. I've also rebooted it several times... it shuts down when I unplug it anyway.
It just happened today, and I haven't installed or updated any software in the last several days. I have auto-updates in the Play store turned off. So it's not a software issue. The ROM was the last thing I updated and that was on the 30th.
I think the battery is really empty because I can't power it on at all if it's not plugged in. So, it's not just that the battery level indicator is wrong.
Hopefully, all I need is to replace the battery, but I was hoping someone here could confirm that or suggest what else might be wrong.
Thank you.
Check contact pins see if they are bent away or have crap on them. If not it sounds like the battery is dead, but I assume you already knew this.
I had already checked all connections and didn't find any damage or other problems. I bought a new battery today and that seems to have solved the problem.
Thank you.
Ghodmode said:
I had already checked all connections and didn't find any damage or other problems. I bought a new battery today and that seems to have solved the problem.
Thank you.
Click to expand...
Click to collapse
I needed to write because this topic is on top on google results. I've lived the same today. A while ago i had a sudden battery decrease issue. There i was suggested to remove the battery and wait for a while. I tried this today. Removed the battery (simcard and memory card also... i just felt desperate). Waited for a while (i gues it was about half an hour). Plugged to charge. And my battery contiued charging from %61. I just showed wrong level.
This issue is happening to me too=/ but it happened to both my batteries in the space of two weeks
.
hi i have the same problem. i bought a new battery as mine was kaput. then a few days after that i needed a new charger port. now my phone wont turn on manually but when it is on charge it will randomly turn on for 10 seconds with 0% battery and then turn off. i tried doing the reboot with the power, home and vol up button but nothing happens. do i need another new battery?
I don't think it's the battery. I think it has something to do with these custom kernels and ROMs. I've been battling this problem for months with no results.
- I have a new battery, new cable, cleaned pins.
- Tried Lollipop, CM12 with kernel, one or two other kernels.
- Tried various KK ... CM11, Dominanx Kernel, some others too.
None work properly. I love all the updates but it's I just can't pin the problem down on my S2. I'd love to know what else I can do because I think I've exhausted all possibilities. Maybe JB is the only option? I dunno.
Help would be great on this.
metro_electro said:
I don't think it's the battery. I think it has something to do with these custom kernels and ROMs. I've been battling this problem for months with no results.
- I have a new battery, new cable, cleaned pins.
- Tried Lollipop, CM12 with kernel, one or two other kernels.
- Tried various KK ... CM11, Dominanx Kernel, some others too.
None work properly. I love all the updates but it's I just can't pin the problem down on my S2. I'd love to know what else I can do because I think I've exhausted all possibilities. Maybe JB is the only option? I dunno.
Help would be great on this.
Click to expand...
Click to collapse
Hi,
if you think the problem is custom ROMs then why don't you just go back to stock ROM and try?
regards
daniu said:
Hi,
if you think the problem is custom ROMs then why don't you just go back to stock ROM and try?
regards
Click to expand...
Click to collapse
I thought it might have been the pcb. I replaced that too but even that didn't completely revive the battery life. Went back and forth between JB and various customs mods to no avail. I ended up selling it for parts locally
Loved that S2 but it was time to walk away from it
deadmike07 said:
hi i have the same problem. i bought a new battery as mine was kaput. then a few days after that i needed a new charger port. now my phone wont turn on manually but when it is on charge it will randomly turn on for 10 seconds with 0% battery and then turn off. i tried doing the reboot with the power, home and vol up button but nothing happens. do i need another new battery?
Click to expand...
Click to collapse
I also had the same problem once. What I did was, went to recovery mode and charged for 1 hour and voila,it was charged till 21% only sadly. But by then,it has never rebooted like that!:angel:
hey ive also had a similar problem in which my j1 (Samsung Galaxy J1 (2016)) started to randomly shut down or restart around 2 months ago. Then, the battery would start jumping percentages like 100%, to 54%, then 33, back up to 84 in around 10 minutes. Then when I tried to charge it, it would stay at 0% and when Id unplug it, it would say 100% and shut down. Around late last month i ordered a replacement battery, it came in yesterday and worked fine up until a few hours ago. Now when i try to charge it it would stay at 0%.
Solution
1.Turn OFF Phone
2. Pull battery out
wait few sec
3. Connect charger
4. Put battery in
5. Turn Phone ON
Working for me. If not prob replace battery :fingers-crossed:

[Q] Bad battery?

Hey, guys!
I've had my I9100 for almost 3 months now. Everything was working fine till last week. I was charging my phone, left it overnight and when I woke up in the morning, unplugged it and it didn't turn on. Thought the phone bricked by itself but when I connected a home-made jig I have it turned on but when it booted the battery was 0%.
Did some research around here and connected it to a 1A charger and left it charging (phone off) for an hour and that fixed the problem. But Two days ago, every time I use my phone and the battery discharges till 60%, the screen flickers a tiny bit and the phone turns off. When I try to turn the phone on, it gets to the booting animation and then it turns off. Sometimes it would boot and the battery indicator would show a charge of 13% or even 1%. It turns on and stays on if I connect it to the charger and let it charge but when I unplug it, it would do the same when it gets the 60%.
The only way I've made it go under 60% charge is if I wipe the batt stats when is charged and when I re-charge it, goes back to the 60% issue. I've been thinking about buying a new battery but I'm not sure if is the phone or the battery and came here to ask.
Will try to borrow a battery from a friend today and see if the problem persists.
Any help will be much appreciated.
Edit: I'm running Jellybam 7.2.0
Goto stock and use it for couple of days.
Sent from my GT-I9100 using xda app-developers app
Sagar Khanapurkar said:
Goto stock and use it for couple of days.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
I swapped batteries with a friend that also has a stock I9100 and my battery did the same to his phone. Guess is time to get a battery replacement.
Daneru said:
I swapped batteries with a friend that also has a stock I9100 and my battery did the same to his phone. Guess is time to get a battery replacement.
Click to expand...
Click to collapse
hi, i am actually facing the same problem as you. i got my i9100 for around 3 months now. 1 month ago i updated to stock jelly bean 4.1.2. it was only until last week when the battery issue surface. i had my phone charged to 100%. switched it off for the night. when i attempt to switch it on again in the day, the phone would not start up and reflects that its battery level is 0%. for subsequent days i have observed the following:
First the phone can never be fully charged. it will reflect that the charge is complete and request to remove the charging cable.
Secondly, i realized that when i removed cable, the notification to remove the cable did not disable.
Lastly, when i restart my phone, the battery level will drop to 70 - 80% range. Currently i am suspecting its a software issue. trying to install a updated stock rom now.
One more issue. whenever i switch off my phone, the giant battery logo will keep appearing in the middle of the black screen. i will not be able to switch on the phone unless i enters its recovery mode and select "reboot now manually". maybe you can verify if you have the same issue with your faulty battery? i am currently trying to troubleshoot the root of my battery problem.
any help is appreciated!
oklono said:
hi, i am actually facing the same problem as you. i got my i9100 for around 3 months now. 1 month ago i updated to stock jelly bean 4.1.2. it was only until last week when the battery issue surface. i had my phone charged to 100%. switched it off for the night. when i attempt to switch it on again in the day, the phone would not start up and reflects that its battery level is 0%. for subsequent days i have observed the following:
First the phone can never be fully charged. it will reflect that the charge is complete and request to remove the charging cable.
Secondly, i realized that when i removed cable, the notification to remove the cable did not disable.
Lastly, when i restart my phone, the battery level will drop to 70 - 80% range. Currently i am suspecting its a software issue. trying to install a updated stock rom now.
One more issue. whenever i switch off my phone, the giant battery logo will keep appearing in the middle of the black screen. i will not be able to switch on the phone unless i enters its recovery mode and select "reboot now manually". maybe you can verify if you have the same issue with your faulty battery? i am currently trying to troubleshoot the root of my battery problem.
any help is appreciated!
Click to expand...
Click to collapse
Your battery is probably damaged too, since everything was fine for almost 3 weeks, as you mentioned. If it was a software issue, I guess it would have caused problems since you updated the phone. I'd recommend you to check if your battery is swollen: take the battery off, put it on a flat surface and try to spin it. If it spins a lot, then it is swollen and you need a replacement.
Hope this helps

[Q] Overheating and not turning on !

I rooted my phone with Cyanogenmod 11 (nightly) two weeks ago, it was fine, no issues. On monday morning phone was fully charged, but with very little to no use it was completely discharged in 7 hours. When I connected phone to a charger (original and working) it didn't want to turn on, it did NOTHING, black screen. When I borrowed battery from my brother's S2 wich was charged almost fully, it booted KitKat but it showed that the battery has to be recharged. I put it back to brother's phone but it showed only approx. 15% less than before, it was okay. I tried charging my phone with brother's battery, but it was incredibly overheating , not like when you play games, I was afraid it was going to blow up. It is overheating even when phone is turned off and charging or even when normally turned on, on battery. I tried enabling airplane mode, I even installed stock ROM with Odin, but it is still overheating. It is not overheating near the camera but on the left side of the screen, I don't know what that chip is there for. Stock ROM now gives me error after 2 min. saying "Charging paused, battery temperature too high." Now my battery is discharged and phone is unable to charge it, only black screen again. Could this be done by rooting it with Cyanogenmod ? it was the only ROM that I installed through the step-by-step process on their site and for couple of days it worked fine. Is this a hardware issue that would occur even if I wouldn't root my phone, also is it somehow fixable, or would I need to change motherboard completely ? PLS HELP !
Yuki8san said:
or would I need to change motherboard completely ?
Click to expand...
Click to collapse
That.

Screen flickering then boot loop

Hi I have two Samsung S3s and I flashed both of them with blisspop a few weeks ago. One I bought 14 months ago off giffgaff the other is about 2 years old off virgin mobile.
Both phones appear to run well when connected to the mains charger but when I take them off charge after approx 30 mins of use, the screen backlight begins to flicker and then the phone goes to the Samsung SIII spalsh and begins to bootloop until I connect the charger at which point the phone boots and begins optimising apps. When the phone comes back on it shows low battery usually 4% even if the battery was 75% when it shutdown.
Does anyone have any suggestions or ideas what the problem could be? I have searched this forun and Google but can't find the exact problem. When I first noticed it, I did think it could be the battery on its way out but as its both phones I don't think so and they both charged and discharged fine before I flashed them. I have also tryed cm11 and cm12 and the problem is exactly the same in all roms for me.
Thanks Paul.
Maybe the battery connection is loose with the electrodes.

Charged battery at 0% or 5% even when charged on another device. Cannot boot.

So I have an odd issue here... I have a tmobile v10 that suddenly stopped working. Can't boot up or anything anymore. Here's some events (not in order) that have happened. I dropped my phone about 6 months ago and cracked the screen. Was fine up until about a month ago. I pulled it out of my pocket one day and it was off. Thought I had accidentally turned it off while in my pocket, so I went to power it back on, but nothing. It wouldn't boot up at all. Thought my battery died so I plugged it in, but again, nothing. for the next couple of days I was able to randomly get it to power up and boot up to the main home screen. After a few seconds it would freeze and then shut off on it's on, sometimes rebooting automatically, but never making it passed the "LG" splash screen. Any who, before all this the phone ran fine, no issues. I didn't update anything or add any odd ball apps. I got it to show some life when plugging into the computer via the lg usb cable with the battery removed, but as soon as I threw the battery back in and try to reboot, nothing.
The other odd thing I noticed is that when I threw a charged battery in it, it would kill the life of the battery (verified by placing a charged battery in the dead v10 and then after trying to boot, removing and placing back in my good v10 and checking battery life). It would always say it was either 0% or 5% when I put it back in the good v10. The batteries will still charge on the good v10 so I don't think the batteries are bad (one is a brand new LG brand battery).
I'm leaning towards the prongs being shot on the battery connector that's on the motherboard, rather than the charging port. Anyone ever have this issue or even hear of it? I did some searching online but realized I didn't even know what to look up to find what I was looking for.
Any help will be greatly appreciated and thanks in advance.
Sorry for the story, just trying to give as much details as possible. I'm sure I forgot some stuff, but I'll edit/update as I remember them. Thanks.

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