Hey there, i have a smartphone (android 5.0.2). it has a bootlooping problem, it turns on at a certain battery percentage. I can keep the phone on as long as i keep the screen on. the moment the screen locks, the phone shuts down automatically and goes to bootloop again. for the bootlooping i tried to install a fresh stock firmware and it helped a little with the bootloop. not that it doesn't bootloop, but it turns on faster. for the shutting down i thought maybe the battery needs to be calibrated so i tried calibrating the battery. the phone is not rooted so i tried the alternative with apps as well as charging to 100 and fully discharging it. it helped with displaying the percentage correctly but it still shuts down when its screen locks.
so first of all what could be the reason for bootloop and how to fix it, secondly what causes the phone to shutdown when it locks the screen.
is it a hardware problem? also the phone is LG G2.
Update: just changed the phone battery and it still boot looping. any ideas what else could cause this problem?
Related
I have an lg optimus v rooted and running the latest version of IHO backside cm7. ive been running this custom rom for about a year, updating up to the version i have now the whole way. since maybe the january updates my phone has been randomly restarting while using the phone. sometimes ill be on a call or opening facebook, or just playing music and the screen will go black and the lg logo will appear, then go away and the phone will turn off. ill try and boot the phone and it will show the lg logo and turn off again for a few times until finally it will boot properly. once it boots, the battery percentage will be about 15% instead of what it was before the random restart, usually near full charge. i noticed that if i just wait after it reboots randomly a couple of minutes with the phone off, it will boot up no problem but the random battery amount left will still change, sometimes much lower or higher % will be displayed. any recommendations? i want to reset battery stats but am not sure how to go about that properly. id like to do a wipe and clean install but also, ive never done that either. i also have clockworkmod recovery installed, and not the touch version. please help, my phone is pretty useless at this point im considering buying an extended life battery to see if its the battery but if i can avoid that even better. thanks everyone!
Hi all, I have a Lenovo A1107 tablet running stock ICS. It began powering down when it reached <50% or so and gradually climbed the % scale to the point where now it is does it at 98% and while plugged in. I have searched for hours and tried few troubleshoots (cleaning up system resources such as apps, home screens etc..., factory reset, airplane mode) but no luck finding a fix.
This problem has become seriously annoying and I just can't seem to narrow down what the problem is. Does anyone have any ideas? Thanks much!
Well, after thinking about it more I realized that the problem seems to be that for some reason or other the system isn't registering the device getting charged, even though the battery indicator says it is charged (90%, 98%, or whatever). The reason it got progressively worse (first starting at @50%, then at 80% and so on) was because even though the battery was getting charged the system was being told that it hadn't. That is why eventually it would power down almost as soon as it turned on, just like it would if the battery were completely dead. The reason I know that is not completely dead and not the battery indicator that is in error is because I could boot into recovery mode and stay in that for well over an hour, despite the fact even that the device will not boot into recovery mode if it is <30% or whatever.
So, I guess the best question would be.......what part of the system communicates between it and the battery? The part that says "no/low power so shut down"?
All moot now as I just took the tablet back and got a different one. Thread closed.
Hi guys, I'm hoping someone can help..
For the last few weeks my Nexus 5 has been randomly crashing, this has progressively worsened. The phone crashes and completely shuts off, one second it will be working the next it will be off. When I turn the phone back on it thinks the battery is almost completely drained and, when the problem wasn't as bad, the battery level would slowly increase when left.
Now the problem has increased that, when it crashes, the phone will either not fully boot or crash again very soon after starting. The only way to keep the phone on it to have it plugged in, this also seems to prevent the crashes.
I have factory reset the phone and reflashed the latest factory image. I am also rooted.
I've attached two logcat files that I started recording before the phone crashed.
Any advice on how to fix this issue would be appreciated.
Thanks
slightperil said:
Hi guys, I'm hoping someone can help..
For the last few weeks my Nexus 5 has been randomly crashing, this has progressively worsened. The phone crashes and completely shuts off, one second it will be working the next it will be off. When I turn the phone back on it thinks the battery is almost completely drained and, when the problem wasn't as bad, the battery level would slowly increase when left.
Now the problem has increased that, when it crashes, the phone will either not fully boot or crash again very soon after starting. The only way to keep the phone on it to have it plugged in, this also seems to prevent the crashes.
I have factory reset the phone and reflashed the latest factory image. I am also rooted.
I've attached two logcat files that I started recording before the phone crashed.
Any advice on how to fix this issue would be appreciated.
Thanks
Click to expand...
Click to collapse
It's normally an issue with the battery. When the device thinks the battery is dead (due to sudden voltage drop probably), it shuts down.
Aerowinder said:
It's normally an issue with the battery. When the device thinks the battery is dead (due to sudden voltage drop probably), it shuts down.
Click to expand...
Click to collapse
Thanks for replying. Does this mean if it have the battery repaired/replaced that the issue should go away? Are there any apps anyone could recommend to check if the voltage is the issue?
Hello everyone,
My galaxy s7 started freezing and restarting. It sometimes even doesn't start on its own and gets stuck at 'Samsung' screen and I need to press volume down+home+power buttons. Most of the time phone gets hot when this happens. But I noticed it can even happen when the phone isn't hot at all. I tried doing a factory reset and this didn't help. Still the same problem. I guess this is a hardware failure, right? Anyone had a similar problem and had it fixed? Can this be because of a faulty battery? But other than this problem, there isn't a visible problem with the battery such as discharging quickly.Thanks..
Deuce0001 said:
Hello everyone,
My galaxy s7 started freezing and restarting. It sometimes even doesn't start on its own and gets stuck at 'Samsung' screen and I need to press volume down+home+power buttons. Most of the time phone gets hot when this happens. But I noticed it can even happen when the phone isn't hot at all. I tried doing a factory reset and this didn't help. Still the same problem. I guess this is a hardware failure, right? Anyone had a similar problem and had it fixed? Can this be because of a faulty battery? But other than this problem, there isn't a visible problem with the battery such as discharging quickly.Thanks..
Click to expand...
Click to collapse
The battery doesn't have to be hot to be failing. The S7 battery is only designed for 500 cycles of recharging after that it starts to cause problems.
For several days now, I've been facing this odd issue with my G7 Power: it powers off totally random, even in wakelock, and only boots back up if it's plugged in the charger, no matter if the battery is at 100%. I've tried unsuccessfully to perform a calibration, but in this situation I just can't drain the battery without the phone powering off in the middle of the process. If I enter the fastboot mode and leave it like that, the phone stays on for hours without even getting close to a battery depletion.
I tried a hard reset, a LMSA recovery and went even further flashing the phone back to Android 9, after unlocking the bootloader, but neither of those alternatives solved my problem. I reckon it's a hardware malfunction, but what specific part is damaged?