[Q] Nexus 5 won't turn on - Android Q&A, Help & Troubleshooting

Hi All,
So, my nexus 5 D820 wont turn on after full discharge. At first when I tried to turn it on it stuck at Google screen,but after 10 min of charging phone didn't respond. Now I can't turn it on. The screen is not turning on. I also tried to get to the bootloader, but ... The phone is dead. I tried to charge it all day but nothing has changed, even the charging icon didn't appears on the screen. I thought that it is battery issue, I put my battery on another Nexus device turn it on and it is working, but the battery fully discharged, I charge it fully and put it on my Nexus 5 and tried to switch it on, but it doesn't react. Any ideas? Maybe the reason in the boot loader?

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[Q] Phone Wont Turn Off

I just switched to an i9100 and gave my wife my old i777. I restored this phone back to stock rooted. The problem at first the phone would reboot when trying to turn it off, also when putting the battery back in it would automatically turn on. Now i pulled the wifes phone off the charger, it was fully charged and had the full charge notification. After the phone had been unplugged from the charger for 10mn the full charge notification was still in the status bar. I tried turning the phone off and it would not even reboot this time, just this weird loop, see vid http://youtu.be/PKyYhXhu4zY

Phone stuck in a bootloop

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.

Galaxy s2 won't turn on after wipe /data

Hello everyone!
As title says ,my samsung galaxy II (CM12.1 flashed) doesn't give any signs of life.
Here is the story:
I turned off my phone this morning and plugged in charger.After hour i plugged off charger from my phone and tried to turn it on.As it was turning on it got stuck on samsung logo.Afterwards i went into recovery mode and wiped /cache.Everything was fine.Then i went to "factory reset" where problem occured...while it was deleting /data it got stuck.Few minutes later my phone suddenly turned off.After that moment it just won't turn on.I tried to get into recovery and download mode but phone doesn't react.When i plug in charger it doesn't react neither. Battery was at 50% when i tried to turn it on.
Before this, phone was running fine. But recently it was freezing a lot so i had to take off batery and put it back in.
Im not native english speaker so don't get mad on my "perfect" english
I hope someone will help me diagnose the problem
Thank you
Goodmorning.
....the same here..... sadly.
This is what I know regarding that unable to turn phone back on problem, perhaps can solve yours.
We know the S2 i9100 (and maybe the other variants too) has "problem" with battery levels. In my case, it won't surprise when I got (for example) 48% then drops drastically to 3% after reboot. The problem sometimes also occur when I reboot to system from recovery.
Regarding to your problem, try to recharge your S2 until 100% (in this case, phone is off completely), unplug the charger, then turn it on by holding the power button.
If the phone still won't turned on, try this tips as it always working for me. Plug the charger and try to turn the phone on (holding the power button). If the phone just go back to battery indicator screen (sometimes the screen will blinking once), here the problem.
From here, you need to see what kind of battery indicator image shown on the screen. If the image is a battery indicator with round progress inside it (and doesn't change no matter how long you expect to it), you need to press and hold the power button to restart. Repeat this until you got the image with battery indicator with ACTUAL battery level and bar shown. When you see this, unplug your charger, wait until the screen is completely off, then holding the power button to turn on the phone. In my case, this is always work.
If for some reason you never get the correct battery indicator screen after many tries, try to remove the battery off, wait for at least 15 seconds, put it back on, then try the procedure again.
Hope that help.

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.

Battery doesnt fill up

Hi guys, i wanna ask
So earlier this day i charged my redmi note 3 for 2hours or so, but when i get back to get my phone the battery indicator still showing 0%
I tried different charger and cable still same. Even tho the led turns on and it says charging on the screen.
I turned it on, it boot just fine but it turned itself off right after bcus 0%
Is the battery dead or something?
I need the data inside and i cant get it
Saika6969 said:
Hi guys, i wanna ask
So earlier this day i charged my redmi note 3 for 2hours or so, but when i get back to get my phone the battery indicator still showing 0%
I tried different charger and cable still same. Even tho the led turns on and it says charging on the screen.
I turned it on, it boot just fine but it turned itself off right after bcus 0%
Is the battery dead or something?
I need the data inside and i cant get it
Click to expand...
Click to collapse
Flash latest fastboot rom and check if same issue.

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