Develop Bugs

[Q] HTC Desire Z constantly restarts

Hi, i have a problem with my phone i could not find any solution online.
Two days ago the phone was in my pocket in sleep mode. I took it out and it was closed, no button was responding, i took the battery out, put it back again and started it. It asked for the pin code, i entered then it said "unlocking sim card" then the phone restarted.
From that moment it constantly restarts, regardless of me entering pin code or not, it restarts. I use stock firmware and i didn't do any overclocking or any modifications to the phone.
I tried the boot screen (the one which is entered by pushing yolume down+power button) I did factory reset from that screen, it didn't help. I put the phone in recovery mode and a screen appears and nothing happens, i think it is like a dfu mode in iphone, i don't know how to use it. In the boot screen a green text screen appears for a second says "PC101img.zip is missing" or something like that.
Do i have to load the rom again to this phone? If so how can i do that?
Any help will be appreciated.

Hey,
i've never heard of this issue on any phone.
So you coulds just try to do a few things.
First you could try to flash a new radio ROM.
just see the android developement section and the radio thread.
the radio doesnt change the actual rom on your device so yiou wouldnt loos your data.
it might help it might not, as we dont know what the reason for the issue ist.
when does it reboot? when you enter the sim code?
try a different sim card, just to see if it still happens and/or try to remove the sim passcode.
this might help and might help to see where the issue is...
nick

Thanks for the answer. I didn't try different sim card but i tried to start the phone without the sim card and the sd card. It didn't change anything, it still restarts after few seconds.

the-nj said:
Hey,
i've never heard of this issue on any phone.
So you coulds just try to do a few things.
First you could try to flash a new radio ROM.
just see the android developement section and the radio thread.
the radio doesnt change the actual rom on your device so yiou wouldnt loos your data.
it might help it might not, as we dont know what the reason for the issue ist.
when does it reboot? when you enter the sim code?
try a different sim card, just to see if it still happens and/or try to remove the sim passcode.
this might help and might help to see where the issue is...
nick
Click to expand...
Click to collapse
I don't see how a new radio would affect the phones sim card...
Sent from my T-Mobile G2 using XDA Premium App

The problem seems to be with the sim card. I changed the sim card of the phone and it didn't restart from that moment. I used vodafone sim card with the phone for a week and after a week sim card started restarting the phone.
Is there a known cause of vodafone sim cards doing this?

Re: Constantly reboot...
the same issue does happen on mine! Stock firmware, never rooted, however, I've tried using different SIM cards and removed SD card, the same situation still exists. Reboot and reboot... please help!

Spastic909 said:
I don't see how a new radio would affect the phones sim card...
Click to expand...
Click to collapse
Yeah, and randomly suggesting to flash new radios for a problem this person never heard of before is not great advice. Bricking the phone is possible when radio flashing, and should be approached with caution, and only done when there is a radio-specific issue.

G3 D855 not working after factory reset because of 'Unfortuanately' popup

I factory reset my LG G3 D855 for no reason other than wanting to start fresh again. I have since encountered an issue I have never come across before:
Upon each boot, I am brought to the LG Set up wizard. No issues there, but without fail, after no more than 5 seconds I get the popup 'Unfortuantely, the process com.android.phone has stopped'. Pressing 'okay', all that happens is the same popup is shown again immediately.
I have tried resetting it to factory settings via the volume and power keys multiple times but theres nothing changes. I've even tried resetting without the micro sd card and sim card ejected, but still no difference.
PurpleDrake wont recognize my phone is connected, nor PC Suite. My computer just doesn't know it's connected.
I have tried everything I know of; if it were as simple as flashing the software via the recovery screen I could do that no worries, but if you're at all familiar with the G3, the bootloader is locked.
I've tried racing through the setup after removing the battery and rebooting (because with the popup, literally nothing is is interactable), but I can't get very far in 5 seconds.
Please help me guys, I don;t have a backup phone and I need this bad.
side note..the last software i remeber installing was 10vi or something....and I don't know if it would be relevant at all, but a few weeks ago, I converted the phone app from system to user so I would be able to customize the LED alerts.
Any sort of help would be appreciated.

Flash the firmware via LGFlashtTool and you should be good to go
Sent from my LG-D855 using Tapatalk

yousifamir said:
Flash the firmware via LGFlashtTool and you should be good to go
Sent from my LG-D855 using Tapatalk
Click to expand...
Click to collapse
awesome, thanks for pointing me in the right direction.

LG G3 Blue Screen

Earlier today I was using my phone I forget what exactly I was doing I think I was using the web browser or opening an app. The phone randomly restarted and after the LG Logo screen appeared I got a blue screen for about 10 to 15 seconds and the screen went off. I pulled the battery to see if that would help but that didn't work. Tried safe mode and even factory reset both times got the blue screen (can get the little menu tho) I then plugged the phone into the computer and initially I could get it into download mode. But after installing the LG drivers, and installing LG Flash Tool I went to flash it back to stock. (My phone has pretty much been stock and unrooted except for the lollipop update. ) When I went to flash the phone screen went blue and the flash tool was unsuccesful at implementing the flash. I also tried the LG Mobile Support Tool. Now intermittently I can get the phone into download mode and get the computer to recognize the phone and LG Flash Tool to the ready stage to flash but after that no luck. Any suggestions? I have not tried fastboot or kdz conversions as I dont think those apply to my problem but I could be wrong

Chris1672 said:
Earlier today I was using my phone I forget what exactly I was doing I think I was using the web browser or opening an app. The phone randomly restarted and after the LG Logo screen appeared I got a blue screen for about 10 to 15 seconds and the screen went off. I pulled the battery to see if that would help but that didn't work. Tried safe mode and even factory reset both times got the blue screen (can get the little menu tho) I then plugged the phone into the computer and initially I could get it into download mode. But after installing the LG drivers, and installing LG Flash Tool I went to flash it back to stock. (My phone has pretty much been stock and unrooted except for the lollipop update. ) When I went to flash the phone screen went blue and the flash tool was unsuccesful at implementing the flash. I also tried the LG Mobile Support Tool. Now intermittently I can get the phone into download mode and get the computer to recognize the phone and LG Flash Tool to the ready stage to flash but after that no luck. Any suggestions? I have not tried fastboot or kdz conversions as I dont think those apply to my problem but I could be wrong
Click to expand...
Click to collapse
what about your phone now? is it fixed or not? i have the same issue. please reply.

sajjadrashid said:
what about your phone now? is it fixed or not? i have the same issue. please reply.
Click to expand...
Click to collapse
I work on phones for a living. Unfortunately, i think the motherboard is bad. Nothing you can do.

Bake at 350 for 10 minutes
bloodstorm666 said:
I work on phones for a living. Unfortunately, i think the motherboard is bad. Nothing you can do.
Click to expand...
Click to collapse
I know this sounds ridiculous but I just did it this weekend and IT WORKS. I pre-heated my oven to 350, removed the motherboard (without sim and/or SD card) and placed it in the middle of my oven on a piece of white paper for EXACTLY 10 minutes. Afterwards, I let it cool and re-assembled. My phone is now working perfectly and I didn't lose any data that was on my phone. I was able to back up my data and am still using it, although I am prepared for it to fail again at any point. I know this sounds absurd but it works. I would post the link but I can't until I've placed 10 posts. I thought this was important enough to share with others and that is why I created an account here. If the moderators look at this please add the link. you can just search Google for "lg g3 blue screen fix oven" and it is the first result right now on forums.androidcentral.com. I'm gonna go ahead and use my phone until it dies again, but for the last 48 hours it has been working flawlessly.

Phone always crashing, even on stock firmware?

Hello all,
This is just the continuation of my last post - http://forum.xda-developers.com/galaxy-s4-tmobile/help/s4-acting-buggy-using-roms-t3306395
I was recommended to use Odin to flash the original 4.4.4 firmware, so I did just that and my phone worked for a few hours. But then, it would freeze again and force reboot. Then it would get stuck in bootloop and I would have to take the battery out to reset it. When this finally loaded, I wouldn't get any service and told me to insert an SIM card even though there was one already inserted. A few moments later it would crash again.
After this, I flashed the 4.4.2 firmware through Odin, and the same things kept happening. I'd only be able to use my phone normally for about an hour or so and then the cycle of crashing and bootlooping would start again.
I noticed that whenever I did a factory reset and wiped all data, the phone would work normally for a short period of time. But as usual, a bit later it will freeze.
Is this just a hardware problem with my phone and practically unsolvable, or is there a fix to this?
Any help will be appreciated, thank you.

Did you restore any data or apps after flashing the fresh firmware?

lumin30 said:
Did you restore any data or apps after flashing the fresh firmware?
Click to expand...
Click to collapse
Nope, I just went to the store to get a couple of my most used apps like WhatsApp, Twitter, and Soundcloud. I didn't restore anything else

Did you take out the micro SD card as well? Do you get messages when the device crashes?
Sent from my SM-G920T using Tapatalk

serio22 said:
Did you take out the micro SD card as well? Do you get messages when the device crashes?
Sent from my SM-G920T using Tapatalk
Click to expand...
Click to collapse
Yup, I tried rebooting without my SD card as well, same problem occurs. And usually what happens is it'll boot up, but becomes unresponsive as soon as I touch it. It will then reboot by itself and go into a bootloop. In the rare occasion I am able to bypass my lock screen after booting, I get a com.process is not responding and my background is all black. This too will eventually freeze and enter a bootloop.

fmaster12 said:
Hello all,
This is just the continuation of my last post - http://forum.xda-developers.com/galaxy-s4-tmobile/help/s4-acting-buggy-using-roms-t3306395
I was recommended to use Odin to flash the original 4.4.4 firmware, so I did just that and my phone worked for a few hours. But then, it would freeze again and force reboot. Then it would get stuck in bootloop and I would have to take the battery out to reset it. When this finally loaded, I wouldn't get any service and told me to insert an SIM card even though there was one already inserted. A few moments later it would crash again.
After this, I flashed the 4.4.2 firmware through Odin, and the same things kept happening. I'd only be able to use my phone normally for about an hour or so and then the cycle of crashing and bootlooping would start again.
I noticed that whenever I did a factory reset and wiped all data, the phone would work normally for a short period of time. But as usual, a bit later it will freeze.
Is this just a hardware problem with my phone and practically unsolvable, or is there a fix to this?
Any help will be appreciated, thank you.
Click to expand...
Click to collapse
i am also have some problem.

LG G3 Bootloop and random restarts

So I was on holiday in London recently and i left my phone charging for a while, when i went to use it to check my texts all of a sudden it froze and got stuck in a bootloop.
After coming back from my holiday i bought a new battery which didnt fix the problem. Sometimes the phone manages to boot up but its either laggy or it ends up restarting into a bootloop eventually. I have tried everything, hard reset, upgrading to 6.0, flashing, and nothing seems to work.
I dont know what else to do at this point, is my phone screwed or am i missing something?
LG D855

find any fix
tried new battery but no luck
factory reset and re-flash

Same here
I have the exact same problem my lg g3 d855 would randomly restart or/and bootloop. I did everything I wiped dalvik cache data even internal storage and started from scratch. It stopped for a while but then again it started to do the same thing. If you find any solution let me now.

This happened to me last night :crying:

lovetatfitties said:
This happened to me last night :crying:
Click to expand...
Click to collapse
Happened same time to a friends LG G3
i just fixed it doing this
Download and install lg drivers for pc http://oceanhost.eu/ed0bnrnghgef/LGUnitedMobileDriver_S51MAN312AP22_ML_WHQL_Ver_3.12.3.exe.htm
Boot phone into download mode (turn phone off, Plug usb cable in first then hold power & volume up immediately after)
Run the program in attatched "B2CAppSetup.rar" and start the update process

EasyAndroidPro said:
Happened same time to a friends LG G3
i just fixed it doing this
Download and install lg drivers for pc http://oceanhost.eu/ed0bnrnghgef/LGUnitedMobileDriver_S51MAN312AP22_ML_WHQL_Ver_3.12.3.exe.htm
Boot phone into download mode (turn phone off, Plug usb cable in first then hold power & volume up immediately after)
Run the program in attatched "B2CAppSetup.rar" and start the update process
Click to expand...
Click to collapse
It worked... Kinda. Now the WiFi/BT doesn't work. This is probably hardware related so I think it's time to move on, but thanks anyways!

lovetatfitties said:
It worked... Kinda. Now the WiFi/BT doesn't work. This is probably hardware related so I think it's time to move on, but thanks anyways!
Click to expand...
Click to collapse
I think this was caused by a virus or bad update. before I updated my friends I managed to get it to to boot once and the Wi-Fi did not work either after update Wi-Fi still did not work. Which would explain why this happened at the same time to multiple people... tried everything to fix Wi-Fi nothing would work he ended up sending it back for replacement under warranty.
All the flash does is update it to the latest android which would not cause the Wi-Fi problem

jimmyjim11 said:
find any fix
tried new battery but no luck
factory reset and re-flash
Click to expand...
Click to collapse
I cant believe this, I was looking at a post i made on another forum a while back and someone said the sd card was corrupted, so i removed the sd card and Lo and ****ing behold my phone is working perfectly again. Somehow the SD card is corrupted or something while still functioning. hopefully this helps, i dont get why this isnt suggested in LGs official troubleshooting guide, ridiculous.

downgrade to kitkat 4.4.2 stock rom
For LG G3 boot loop issue, only downgrading to stock ROM KitKat 4.4.2 worked for me. Newer android releases seem to cause hardware conflicts with this model, especially while using Wi-Fi and enter in a boot loop. To downgrade, I used LGUP Tool and a suitable kdz file as LG stock firmware which you can find after some research on the net.