J2 Prime reboots after turning on. - Samsung Galaxy J2 Questions & Answers

So, I was busy doing some things, when my phone ran out of battery, so I decided to turn on the ultra power saving, after that, I turned off the phone. When I came back to my home, I charged my phone and started it again. Now, it reboots but first it gets on the menu of ultra power saving mode and after 3-5 seconds, it reboots, and its looping for forever. I tried to fix it by getting on recovery mode and wiping cache partition, but it didn't work. I know that I may fix it by doing a factory reset, but I would like to know if there is another way to resolve this.
P.S: 5 days ago, the phone did the same for the first time, but I could fix it (idk how, I only turned on the phone.)
Anyways, thank you for the help.

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[Q] HELP!! New stock nexus ui crashed, stuck at boot animation

Stock galaxy nexus, ui force closed. Powered off. Can get into recovery mode to attempt to reinstall stock rom. It shows a droid with an opened chest, with a red triangle above it when I try to go to recovery mode from the odin screen.
Anyone else have this issue? Is there a way to flash using a mac? I have limited access to a pc.
Thanks all.
This is the hspa version.
svntsvn said:
Stock galaxy nexus, ui force closed. Powered off. Can get into recovery mode to attempt to reinstall stock rom. It shows a droid with an opened chest, with a red triangle above it when I try to go to recovery mode from the odin screen.
Anyone else have this issue? Is there a way to flash using a mac? I have limited access to a pc.
Thanks all.
Click to expand...
Click to collapse
The android icon you're referring to sounds like the stock recovery. In order to flash a ROM (even stock) from recovery mode, you'll need to load a custom recovery. This requires the device to be unlocked.
Not very often a stock setup needs to be restored. Generally, with the stock setup, only the /data partition is wiped (revert to factory default) and the issues are cleared. Not sure why a stock setup would need to be restore.
If you're still going to pursue reloading the system, without access to the normal android mode, the best route will be using fastboot. This can be done on a mac and the fastboot commands should be the same.
Hope that helps get a start!
This happened me earlier. I was able to factory reset it, which, unfortunately really annoyed me because I hadn't saved a backup..
Before the "Google" logo shows up, press and hold the power button and the volume up and down buttons.
Then go into recovery mode using the volume buttons.
When it reboots, you get that Droid with the hazard sign (which I know you're at, but just for the sake of others who need help) all you have to do is hold down the power button and WHILE it's held, press the volume up or down button and move to "Factory Reset". When you hold down the power button and press the volume rocker, a little menu will appear. It should only take a few minutes then.
Hope this helps. Apparently this is a WiFi issue. I'll definitely be keeping backups as of now..
I left it off, plugged it back in for a couple of hours and it booted right up. Strange.
I'm wondering if it had anything to do with juice defender and its settings that take effect at a lower battery level? Its the only thing I can come up with. Never had a stock phone's ui force quit and not reboot. The battery was definitely up to 25% given the time it was initially charging, but maybe it was still interfering.
Well, now that she's running, time to get root, recovery, rom and rejoice.
Thanks for the replies, very much appreciated.
svntsvn said:
I left it off, plugged it back in for a couple of hours and it booted right up. Strange.
I'm wondering if it had anything to do with juice defender and its settings that take effect at a lower battery level? Its the only thing I can come up with. Never had a stock phone's ui force quit and not reboot. The battery was definitely up to 25% given the time it was initially charging, but maybe it was still interfering.
Well, now that she's running, time to get root, recovery, rom and rejoice.
Thanks for the replies, very much appreciated.
Click to expand...
Click to collapse
I had the exact same problem happen last night with UI crashing and then the getting stuck at the boot animation. I was desperately searching online, looking to find a solution that didn't involve rebooting to factory setting and came across this post and did exactly what you did and it WORKED, very strange, I really wanna know what caused that!!!!
I've had the same problem with my Galaxy Nexus. I received it on December 21st, with stock 4.0.1 build. No root or unlock attempt at any time. On January 2nd I experienced this problems (UI process crash, screen not responding, reboot and stuck in boot animation).
The only solution was to do a factory reset and start over.
On January 10th same problem, same solution. Second factory reset.
I got the 4.0.2 OTA just two days after that. I thought that would resolve the problem. The phone seemed more stable, with less FC's and no trace of the UI crash. Indeed it lasted long...
Exactly until January 24th when I picked up the phone and seemed in the sleep of dead. Removed the battery, restarted the phone... and stuck in the boot animation.
Do you have any advice? Should I return the phone? Aside from those specific problems I am quite happy with the SGN and Android 4 in general. And I use it quite a lot (I have a very long train commute) without other problems.
Again...
It happened again!!
I don't know what to do anymore, this is not a usable phone when I have to reinstall and reconfigure every 3 weeks.
I may have found the problem
Well, not me exactly, but this bug report seems to fit the problem and the charging workaround. Seems to be a problem the file used to store the battery stats and draw the charge graph.
It also fits my usage (I try not to charge it up until 100%).
I can't post links to the forum, the issue is id number 24518 which you can find in code.google.com/p/android/

HOX Won't Boot

I need a bit of help with a stock HTC One X. As of this morning it won't boot up. I have made no changes to the ROM, everything is stock.
Tried entering the recovery panel and turning fastboot on then restarting but every time the system stops at the "HTC One" page after making a startup sound. Sometimes the screen will go black and hitting the volume keys will bring up the volume changer but that is it.
There was no warning of an OTA update or anything like that.
When charging the screen stays on and dims, but stays on the "HTC One" screen.
Factory reset HOX and it booted, but next day same issues. This is 3 times I've had to factory reset now.
Every time I restart or cold boot it freezes on the "One X" screen.
This exact same thing has just happened to me! Just 10 minutes ago
I have no idea what to do.
I have not attempted root or anything like that everything is stock (Optus from allphones).
All I did was restart and now I cannot get into the phone.
I can get to those options (fastboot) by holding down the volume down button and the power button but restarting it or powering it off there does not help.
I havn't tried a factory reset yet as I'm scared about loosing all my data.
Can someone please help!
Please please
I'm suprised someone else is having the exact same issue what the hell is happening
Have you tried using the Recovery option from the Bootloader?
Yeah I tried that.
It didn't do anything. I've since done a factory reset. That worked but I've now lost everything
Now that's it's allw whiped I figure I might as well root it and install android revolution. I hope it's just a software thing and this will fix it.
Pyrope said:
Yeah I tried that.
It didn't do anything. I've since done a factory reset. That worked but I've now lost everything
Now that's it's allw whiped I figure I might as well root it and install android revolution. I hope it's just a software thing and this will fix it.
Click to expand...
Click to collapse
Fair enough, if you're thinking of Rooting and installing ARHD etc then feel free to use my Guide : The Stock to Custom ROM Awesomeness guide
It'll take you from Stock to having ARHD on your phone ok
(Shameless plug)
http://forum.xda-developers.com/showthread.php?p=30471180#post30471180
Took it into HTC last night and had the firmware flashed. No problems now... 12 hours with numerous restarts just to make sure.
It looks like it was a corruption in the software. I noticed HTC turned off the fast boot option before giving the phone back to me. Took 30 minutes in total.
If it happens again, try to hold the power button and the "Homepage" button at the same time. You should see a grey box saying "Continue holding to restart".
Thats a full restart rather than a shell restart.
That may help.

5X HW brick? No loop

Wanted to seek some clarity on whether my phone is HW bricked. Here're the conditions:
Rooted/Unlocked Bootloader/Custom ROM/Stock Kernel
Randomly found the phone not responding last night, no software updates or heavy usage that day.
Have to long press power to get to turn on. Typical bootloader unlocked warning message then Google screen, then phone turns off. No screen content when charging (battery indicator or booting).
I can get to fastboot with power/vol down and interact with from Nexus Toolkit but attempting to boot to anything including TWRP just produces the same sequence: boot warning, google logo then complete shutdown. Tried booting recovery, wiping, etc from toolkit, nothing.
Occasionally it'll loop once or twice but most of the time it just shuts right off.
Phone is in the freezer now, will try heating solder later. Am I looking at a new phone here? Anything else I can try before heading to the store?
Same issue
Did the freezer trick work?
I have the same issue.
Nexus 5X
Rooted/Unlocked/TWRP/Stock ROM
Randomly turned off, Long press to get back on. Turns off during boot. Managed to access Recovery the first time but havent been able to since, just shuts off.
Google chat thinks it hardware issue.. still under warranty, but would be nice to back up the userdata from it some how...
Surprisingly enough the freezer trick allowed the device to boot into recovery.. unfortunately it wasn't long enough to recover any data and now the phone won't turn on at all :/

Soft-Bricked M9

I've had an M9 for 2-3. After the first year I got my phone, I installed a custom recovery and rooted it but later uninstalled root and custom recovery. It has been fine ever since except recently. Last month, my phone randomly crashed for the first time and got stuck in the infinite bootloop. It was as if everytime it tries to boot up, it crashed during it. If I hit the power, vol up, and vol down button, I make it to the screen with the option to go into recovery, download, etc. But when I actually try to go into either bootloader, recovery, or download mode from that menu, it crashes and goes back to the white htc logo. I've have gotten the phone to bootup a couple times by leaving it in the freezer as it tries to boot up but after using it for 1-5 minutes, it crashes again. If I don't use the phone at all, then it usually wont crash. After a day or 2, the phone fixed itself. Then one morning, my notifications got stuck together and my screen became unresponsive. So I took my death sentence and restarted my phone and now my phone has been doing the same exact thing for a week. I don't know how to fix this problem because getting it crashes trying to go into recovery and trying to do a factory reset is risky since it could crash during the reset. If also manage to make it into safe mode thinking maybe an application or virus is causing this but the phone crashed in SAFE MODE so I don't know what the problem is. I doubt there is any saving this phone because is probably a hard ware problem but who knows. Any help would be greatly appreciated!! Thank you.
Flash back to stock. Stock firmware fixes all sorts of issues.

HTC M9 Stuck on Bootload After Battery Dropping to 0 Fix/Work Around

Hi all,
My phone is rooted (still S-ON)(TWRP installed) and running viper's ROM. Last night I forgot to charge the phone when I got home, when I looked it was 1% and shut off. I plugged in the phone and foolishly tried to reboot right away instead of waiting a good ten minutes. Well the phone never got out of the HTC logo screen. I would hold down the power and it would vibrate twice, no clue what that mean't. Anyways I waited for at least 10 minutes to give the battery a chance to chare and see if it rebooted but it didn't. Finally I was able to get into recovery doing the following. Hold down the volume up and power button till the phone reboots (screen will be black) Then quickly hold volume down and power until you see the HTC logo on the black background. Then you should have the options to boot into recovery and into twrp. I had to do a data wipe as something in the OS got hosed. I lost all apps and SMS but at least I was able to boot back into the phone. Hope that helps some out there.
I have encountered this same issue on 2 phones but couldn't recover either without reflashing a stock firmware.

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