[Q] D850 Issues powering on - AT&T LG G3

I have a d850 that I bought used. It came with the stock updated image.
I rooted the phone, used an autorec app from the store to get TWRP on it, took a backup of the rooted image, (after much failed fiddling with other methods) and flashed the latest CM nightly for the D850 on it. After much fiddling, I finally found a GApps package that worked and flashed that as well to get CM working properly, then took another backup.
At this point I was pretty happy that I had everything working how I wanted. However, I paired my phone with my vehicle (bluetooth) and shortly afterwards the phone shut off.
In this state, the buttons on the phone produce no result. I tried a battery pull, plugging it in and some other shenanigans and nothing worked. Just when I was about to declare it bricked, I discovered something. If I pull the battery, and then plug the phone into power, the error screen comes up. At this point, I could reinsert the battery and the phone would switch to the powered off charging mode (green battery icon). From here, I can reboot the phone into recovery mode (via button pushes), but only if I remove the charge cable once the LG screen comes up. If I don't remove the charging cable, the LG screen comes up, then the phone switches back to powered off charging mode (green battery icon). From recovery (TWRP) I can boot the system back up normally and everything runs fine. I can reboot the phone without issue. However, if I power off the phone, I have to play the pull the battery, plug the cable game again.
I have no idea what portion of the phone (bootloader, recovery image, image, etc) controls what the buttons do when the phone is off. Anyone have any ideas on what I have hosed or how I can fix it?
UPDATE: I found a second method today. Inserting the battery while holding down the power button will also boot the phone successfully. Still clunky, but less clunky.

Related

[Q] TF101/Megatron Bricked?

Hi,
I've been running Megatron ROM for the last couple of weeks with no issues. Tonight when I turned on my tablet it offered me a ROM update to 1.1.3, so I downloaded the update, rebooted into recovery and installed the zip.
When the tablet restarted it kept saying "unfortunately system ui has stopped" and I couldn't access the menu buttons at the bottom of the screen. I managed to get the tablet to power off and I was going to boot into recovery, wipe and reinstall the full ROM again but I couldn't get the tablet to power on.
I plugged it into the wall charger and managed to get it to boot (system ui crashed again) so I powered it off again and now it's completely dead.
I've tried to power on with all combinations of the Vol Up/Down and power button, nothing.
I guess I wait for the battery to discharge and try again?
Any other ideas? Am I bricked?
1.1.3 is a update only. Install 1.1.2 from the thread and then 1.1.3
and delete this directory "/data/data/com.android.providers.media"
I can't get the tablet to power up, it's dead!
I'll wait until the battery has discharged and try to power on.
mappy24 said:
I can't get the tablet to power up, it's dead!
I'll wait until the battery has discharged and try to power on.
Click to expand...
Click to collapse
connect the charger. if it doesn't power up, hold the power button until it does
I held the power button for 5 minutes, nothing.
Will try again tomorrow, the battery was at 45% when it died.
Still couldn't get it to turn on this morning, i'll keep trying over the weekend.
If I still can't get it to turn on after a few days I'll try charging it overnight to see if I can revive it. It's looking very bricked at the moment though
Let sit for a full day or so
Plug in the charger to the tf but not the wall and ground it somehow (piece of metal etc.)
Hold the power button for 3-5 mins (to discharge)
Shout, PRAISE ODIN!
Plug in tf to wall for a minute.
Unplug
Hold power.
This is how I revived a Sph-d700 that I had in a really bad state, the odin step is crucial. Good luck.
Is it not even possible to boot into the recovery mode when you only plug the tablet to the PC?
Sent from my Galaxy Nexus using Tapatalk 2
last case scenario, try and boot into APX and use adb to reinstall your system
I had it attached to my pc last night and tried all combinations of vol-up/down and power, the tablet never appeared in device manager. I understand that APX mode the screen stays blank but something should appear in device manager, right?
I'll see if I can get any life out of it tonight and if not, i'll give it a charge and try again tomorrow.
Thanks for the advice everyone.
Guys, after a 1 hour charge i've managed to get the tablet to boot again.
System UI stops on loading.
I've used adb reboot to get into CWM, the up and down buttons work but the power button doesn't respond. I can't choose any options in CWM.
How should I proceed to get the tablet usable again?
mappy24 said:
Guys, after a 1 hour charge i've managed to get the tablet to boot again.
System UI stops on loading.
I've used adb reboot to get into CWM, the up and down buttons work but the power button doesn't respond. I can't choose any options in CWM.
How should I proceed to get the tablet usable again?
Click to expand...
Click to collapse
You can use the "touch" recovery. Use the repacked by Roach.
It only read from the internal SD card so put all your files you need to flash there.
Just DON'T use a superwipe script or you'll have nothing to flash.
Right, i've managed to flash Megatron 1.1.2 again, the system ui error is gone.
However, it looks like my power button has failed which would explain why I couldn't turn the tablet on or work with CWM.
I guess I try and flash to stock and contact Asus....
It looks like the power button isn't broken, it just needs to be pressed harder than usual to get the tablet to turn on. I've changed the settings so that the volume rocker wakes the tablet.
Flashed Megatron 1.1.2 then 1.1.3 and we're back in business
Edit: PRAISE ODIN!
Just a quick update, I noticed that my power button was at a slight angle, it looks as though it had slipped and the bit of plastic behind the button was sitting below the actual button on the tablet, meaning that I had to push the button harder to turn it on (if that makes sense).
I got a small bit of blu-tac and pulled the button up, which appears to have reseated it and it's now working as it was before.
Glad to here everything is working again. The question now is why this happened in the first place?
Did you go from 1.0.4 to 1.1.3? I am on 1.1.3 with no issues but as said in the Megatron thread, you have to fully wipe coming from 1.0.4 plus 1.1.2 has to be installed before installing the 1.1.3 update.
I don't know, I was on 1.1.2 and installed the 1.1.3 update then when I rebooted I started to get the UI error. That's really the only problem that I had with Megatron, it would have been easily fixed by just wiping and reinstalling.
It was just at that point that my power button started to play up which confused the issue.

Phone will not boot into recovery

My phone is rooted with stock rom. The only changes are listed below
Froze bloat that was safe
changed bootanimation to stock samsung
replaced some apps with inverted versions of themselves (ex. google +, stock messaging)
Here goes:
I was using navigation and I noticed that my phone was off after I had finished. Nothing worked at all, I could not boot into recovery or download. I connected the phone to a charger and red led flashes and an empty battery appears. The battery was full. I could reboot the phone while on the charger, but it would shut off as soon as it got to the homescreen. While off, If I pressed the home button, the green battery would appear as if it were charging. From here I could boot into recovery and download mode. The phone will only boot into these modes while connected to the charger. Here is where it went bad. I attempted to restore a backup while the phone was on the car charger and my car charger got pulled out in the middle of a restore. No charger meant that the phone shut off mid restore. Now, when I plug in the phone, the red led appears and the empty battery with a circle inside appears and then goes away. This repeats itself over and over and the phone buzzes when the empty battery reappears. I can still boot into download mode but not recovery. If I try to flash the stock samsung rom via odin, it says that it passes, however upon automatic reboot the samsung appears and nothing else. After the samsung appears the phone just continues to buzz every 5 seconds or so as if it is trying to do something. Could it be a bootloop? I have done a ton of searching here and now I am resorting to help! Your time is appreciated and beers on me if you can help me get my phone back to normal.
What Rom/kernel were you using before this happened? If custom, which one?
I have another thread a few posts down with the same topic. I am going to delete this one. I was stock rom and kernel. For some reason the phone will not recognize the battery. I tried a new one at verizon and the same thing. I can now boot into both recovery and download mode when connected to the charger , but the phone shuts off as soon as it boots and shows an empty battery with a circle in the middle. Sometimes it does not make it through the verizon boot animation and sometimes it makes it all the way to the homescreen and I can make a few selections before it turns off. After flashing the stock kernel and rom in odin I believe i am completely stock, however I do not want to chance sending the phone into Verizon. I believe that I saw a thread before this happened to me talking about having to calibrate the battery in some way and it had an item to flash in order to fix the problem. I can not find it now. Any ideas? Now that I can access recovery is there anything else that can be done? Why won't the phone recognize that it has a battery? As soon as I pull it off the charger it shuts off. When it is on the charger it appears to be charging and the green in the battery appears to be at about 80% but the level does not move up or down at all. Thank you for your help ahead of time.

[HELP] Stock 5.0.1 phone power up issue

Hello,
I flashed the latest LRX22C image on my nexus 5 today.Had flashed it clean,wiping data,cache and system etc except the Internal Storage.Then I flashed the SUPERSU 2.37 ZIP .Everything was fine for about 4 hours.Then suddenly when I pressed the power button to turn the screen off,it was not turning off and the "Switch off" mode was popping up instead .Then, when I got a call,it switched off.The phone won't turn on again.It starts,the Google Boot Splash appears and the bootanimation starts for like 2 seconds and it switches off.Same thing for bootloader mode.
Please Help me!
EDIT: Now its turning on by itself and switches off in 2 seconds!
Sounds like a bad power switch to me, but of course that is just my opinion. :good:
sounds like a mech issue.
legit isue
I have the same problem on mine now... Basically my phone powered down around 45%. Battery. At the time i thought it was dead... But it wasnt. When i would plug into external power, either usb or through wireless charging it would power cycle continuously at the android splash screen.... (1 to 2 second intervals - even if i booted into fastboot) Interestingly it would never go to the battery charging mode. But automatically boot on charge... It did this for about 6 hours then i gave up and left it unplugged for a day. I plugged it back in and it started power cycling again, however this time on its third boot it came back to life . thats when i discovered i still had 40% battery... I dont know what exactly made it boot but it did. Oddly also on boot, it started optimising apps and finishing install again. I checked the md5 before I installed the update so no issue there. Since it powered up i have powered the phone off using the power button long push and let the phone power down. After doing this when i plug the phone in to usb charge it goes to the charge screen. No issue. That said, if i try to power up while tethered and charging it will not allow it. It just stays at the charge screen. As soon as i unplug the usb the power button allows the phone to power up and work... When booted up it charges as normal when plugged in. Im convinced there is an issue with the power management drivers or drivers for the button controls. My phone worked fine until the 5.0.1 update was installed. On my nexus 5. Anyone else or just us two? Ive had a hard time finding people posting on this issue.

Boot loop, dead battery, no recovery

Thanks for any help in advance.
My Nexus 5 device is unable to boot stock or recovery image. It's a locked bootloader, and stock ROM from my wireless carrier. I charged it with a 2 amp capable charger.
Symptoms: preceding the failure , there were strange slowdowns, apps crashing, and inability to charge the battery over the course of a day. When the battery finally died, that was the last I saw my Operating System. Now, when it's plugged in to power, it indicates full charge. If the power button is pressed it will show the Google logo, then cycle back to the battery charged icon. If the power button is held, the battery logo is skipped and Google logo displayed repeatedly. If the down volume button is pressed in addition to power, I get the screen where I can chose the recovery loader, but then the process of Google logo and reboots persist.
If nothing else, I'd like to grab built-in SD card memory contents and strip out a bitcoin key with about $40 on it that I didn't get to back up before it failed.
What have I tried so far: basically everything above to generate those symptoms. I also tried opening the back, and pulling one of the top cover and unplugging the battery entirely. No effect.
Cheers all. :good:
what happens when you connect it to your pc?
Possible power button issue? You could open the phone, remove the plastic power button from the phone housing, reconnect everything, and then try to boot the phone.
When I connect it to the PC, it goes through the same fully charged loop until I hit the power button for 2S, then it boots. If I hold power, it boot loops; if I leave it alone it fully charged loops (regardless of battery being attached or not). If I remove power button and depress it manually, I get the same loop.
This is a refurb from Google, about 8 months old.

Completely stock Pixel 3 reboot loop

Hi,
Yesterday, I updated my Pixel 3 to the latest version of Android 10.
Today, my Pixel 3 was on like 3% battery, so I turned down the brightness. All of a sudden, the phone just turned off - black screen, and started rebooting constantly until the battery was completely dead. At home, I plugged it into the charger, waited a bit (phone kept rebooting) and after a while, I tried to boot / soft reset it multiple times. When I got to recovery mode and pressed one of the volume buttons to choose factory reset - boom, phone reboots. So, I tried Fastboot to at least get it recognized by my PC. It stays in Fastboot for a few seconds, then reboots.
Can anyone help me out? I need this fixed ASAP, I'm a delivery guy and need my phone to do my job
I had that once. Had to let the phone completely die, then keep it on charger for a few hours.
I got that problem yesterday too. Then I tried to stop the loop by holding Power button and up or down buttons. After that I entered Safe mode(not sure which of the two combinations worked), restart after and everything was fine.

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