Phone stuck in a bootloop - Android Q&A, Help & Troubleshooting

I have Galaxy S plus, I know it is a pretty old device but still somehow sometimes i use it. It was turned off due to low battery. I left it for a charge. It got switched off during a phone call call. don't know if it was charged a bit or not. But now when I am Turing it on it is not turning up. and when i put it into charge it gets boot up onto lockscreen and shows 0% battery and turns off by it self and turns on again and again same thing happens. i would be thankful if anyone could help me out. Thanks.

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[Q] Problems since installing CM7 on HTC Merge

The first time I've allowed my battery to get very low since installing CM7 on my HTC Merge and I'm now having all sorts of problems.
Firstly my screen won't light up. It's just completely black. The phone is on and the 4 buttons at the bottom light up but that's all. The phone is still responding to my touch as I can load apps and hear noises if I happen to touch the correct parts of the screen. It's almost as if the brightness has been turned way down, but I'm unable to see the controls to try turning it up again. I have tried booting to recovery mode but that doesn't display either.
Secondly the battery won't charge. Since the battery is drained I can only get the phone on when it is plugged in, but the orange "charging" led at the top of the phone never lights up. It just casually flashes like it ordinarily would have done when it was running from the battery. I have two batteries and they're both doing this.
I can't be 100% sure that these problems are due to the installation of CM7 but I've never experienced it before so i'm guessing they're connected.
Does anybody have any suggestions on how I can get my phone working again.
It's also worth mentioning that it is also no longer recognised by my computer
Sounds like a hardware fault, if you have the same issues in recovery as you do in your os then its very unlikely its ROM/software related
I don't your device nor have I taken it apart so its only guesses I could give you on which component needs to be replaced, LCD or flex cable are best guesses
Sent from my Nexus 4 using Tapatalk 2
Want to update on this as I've just had another look at it after a while.
With the battery having completely drained, I connected the phone to charge via my PC and the orange charge light lit up and the phone went into recovery mode without any assistance from me. After about 2 seconds the screen went off again.
When the battery has charged sufficiently, I am once again able to turn the phone on and it boots up... but the screen remains blank.
If I discharge the battery and then plug it into my PC, I am able to repeat the appearance of the recovery screen, but it always vanishes before I am able to do anything.
The screen must be surely be functional or how would I get those 2 seconds of display ?
Does anybody have any ideas of what I can do to get the phone working again?
I acquired a new battery and after fitting it the phone immediately worked again. The battery was completely without charge but the phone charged it up without any problems. However, as soon as the power ran low the same thing happened; the screen has stopped working and the battery doesn't seem to charge anymore.

LG E970 Won't Turn on after full drain

I just got my phone repaired for a cracked screen. It was working fine until this morning. while i was driving home, i check my phone to see the time and when i touched it, it was hot and at low power. When i got home the phone was dead so i plugged it in to charge. Now the phone wont turn on but the LED light is on indicating its charging but theres no battery animation on the screen. Can somebody please help i need this PHONE! :crying:

Charging Failure

Hello all. It's been a long time since I've been to this section of XDA, glad to see it's still got some life left.
I'm trying to get my old i777 working so a friend of mine can borrow it. If I remember correctly, it was running an AOKP rom when I stored it well over a year ago, and it was fine. Today I went to turn it on, nothing. I started charging it, let it go for a few hours. It still won't turn on; instead it's acting a bit strange. Every few seconds the screen flashes either the gray battery charging logo, an instant dim flash of the entire screen (a slight gray, nothing bright), or the home/back/etc buttons flash for an instant. When the charge logo appears, the screen brightens just before it goes off. All buttons are unresponsive, my computer does not recognize it. I've been unsuccessful in finding any real help with Google and searching XDA. The only advice I found was to plug it in without the battery, then put the battery in. This did not help. Any feedback would be appreciated - this little phone has a lot of sentimental value to me. It's been through hell and back, it survived my ex (who managed to break a Nokia 3310 and Nokia 920). If I have to put it to rest, I guess it's earned it, but I'd like to keep it going for just a while longer.
Did you store it away with the battery in the phone? If so, in a year, the battery could be completely drained and in some cases, that can cause a problem with charging, as in will not charge. Possibilities to test, use a fully charged battery by charging the existing battery with an external charger, or by using another battery. This would be the first thing I would try.
I am also having such a problem from time to time, when my battery is complitely drained. I am using such a device to bring the battery back to life. Always helps.
I usually plug mine into a higher powered charger like my s6 one and that gets it out of the loop.

Boot logo randomly shows during night followed by pin acces keyboard.

Hi all,
I have recently noticed when charging my phone during the night that it seemingly randomly turns on the screen, goes bright and then shows the boot logo. After a few seconds it then shows the lock screen where I can enter my pin. It doesn't seem to actually reboot.
Does anyone have an idea about what is going on? Is it faulty, do I have a virus or something else maybe?
Thanks
Hi.
I have exactly the same issue.
Today I woke up and at the same time my phone was "rebooting" and ended up in lock screen, keyboard was showing.
And the phone had been on wall charger all the night.
It is really weird and I think it started to happen after the latest updates.
1- don't leave anything charging over night. The phone will get little charges to the battery to confirm it's 100%, thus reducing battery life. You may Google it.
2- have you updated without factory reset? If so, backup with native app and do it. Most problems disappear.

Galaxy Note 4 won't get past logo

Hello,
I have a Samsung Galaxy Note 4 running stock firmware, unrooted and bootloader locked. Ever since a few months ago, I've noticed my phone having some problems such as it randomly shutting off around 20%. Over time, this battery percentage increased until I essentially had to keep it plugged in to turn on. Now it will be at full charge, and still won't get past the Samsung Logo or if it does, it will restart in around 1-2 seconds after getting to the phone lock screen. During this time, the battery percentage is still fully charged and nothing else is abnormal. I noticed something else as well before it got to the state. If I was not connected to the internet the phone will not restart when it runs low on battery, but as soon as I do connect it restarts. I've considered getting a new battery, but is there anything else I can do for the time being?
Peter Wang
Edit: I managed to get it to turn on for longer than 5 seconds and turned on flight mode and now it does not turn off (while plugged in). I'm going to do a backup real quick.

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