[Q] Phone auto restarts when connected to pc - G2 Q&A, Help & Troubleshooting

Hello! I have a major problem. After flashing back to stock, my phone suddenly cannot connect to the pc at all. Once I plug in the cable the phone auto restarts and is stuck in a bootloop until I remove the cable. It also doesn't charge if connected to the charger. Any ideas on how to fix this?

More info regarding this case. Phone is an lg d802 32gb model. Reverted to stock from cloudyg3 rom. Right now I cannot access download mode as the phone auto restarts once I plug it in the pc. Tried with 2 diff pcs but the same problem.

hmmm
dekapitatorr said:
More info regarding this case. Phone is an lg d802 32gb model. Reverted to stock from cloudyg3 rom. Right now I cannot access download mode as the phone auto restarts once I plug it in the pc. Tried with 2 diff pcs but the same problem.
Click to expand...
Click to collapse
Try changing the usb cable.

Hi, I tried 3 diff cables but it still has the problem. Also, I think the cables are not the problem as those cables do work for my other phone (both in charging and connecting to pc). This is a really weird issue. Anyone else experience this?

I have the same problem, phone restarts when connect to pc, if you connect and disconnect several times the usb cable, sometimes it works, you can try this to access your phone, turn it off, connect usb cable, and the power off, sometimes it work for me, also to charge the phone.
Anyway if someone can help us.
Thank you.

Related

[Q] How to return to stock recovery and rom without USB

Hi guys,
Im actually using samsung galaxy s GT-9001 and have recently ran into a serious problem. actually two
Problem 1 : Usb cable malfuction
Im unable to connect my phone to pc, windows reports unrecognised device (was able before, tried few PC, cables) , furthermore im unable to charge my device unless i remove the battery, connect the charger then put the battery back up. Also noticed if i just put the charger on turned off device it boots instantly (skiping the option to charged as turned off), it does charge over USB, but does not recognise it.
Problem 2 : How to return to stock recovery and rom without USB
In regards to my problem number 1 , i have decided to give a shot at warranty, unfortunately cannot get rid of my CWM and custom ROM without ODIN. Any ideas how i could go back to stock rom + stock recovery without USB cable?
ps: Only created this thread as my last resort, after countless hours of browsing and testing. Please help
furthermore im unable to charge my device unless i remove the battery, connect the charger then put the battery back up. [/QUOTE]
Have you tried cleaning the contacts on battery and phone?
MogiMogi said:
Problem 2 : How to return to stock recovery and rom without USB
Click to expand...
Click to collapse
You can try Mobile Odin and also these to resolve connection problems

[Q] No usb after 5.0.2

Hi i have a nexus 7 (2012) everything was working fine until android 5. The device was slow and almost unusable. Then the 5.0.2 update came out and guess what? I updated it and now my laptop wont recognize the device so i tried a different cable and nothing. I plugged the nexus 7 in my second computer and nothing not even the sound that means you plugged something in the usb port. So i went to my brothers house and tried his computer.... the same... nothing. We plugged his nexus 7 (2012) 5.0.2 wich is the exact same device as mine and it works so we thought that it was the usb connector on the device and we switched my connector with his....NOTHING happens. computer wont recognize the device, no sound, no pop-up, no ADB detection. Does anyone have the same problem or a solution on how to downgrade 5.0.2 back to 4.4 without usb cable?
Thank you
Did you tried out to start n7 into fastboot mode and recovery mode?
Is usb not available also there?
fastboot and recovery mode also has no USB. absolutely nothing happens. when i connect the device it charges but the lightning icon does not appear on the battery in the status bar. and its not the usb port on the N7 i changed it.
?????????????????
Same here
I have the same Problem - a N7 GSM with 5.0.2 and no communication via USB.
I have tried different computers with Win7 and Ubuntu14.10. As well as differnt cables. (And all combinations of that work with my HTC M7, by the way)
Under Linux, not even lsusb shows the device, or dmesg shows any connection to a usb device.
To be completly honest, I did not give much love to my N7, I have been using it hardly. But when I did, I have been flashing some differnt Roms and testing different bootloaders so this might be some kind of my fault.
i updated to 5,1 and still the same problem so i assume its hardware related. but i know it is not the USB connector because i tried it on my brothers N7. and it works
Mine is quirky, comp recognizes it and can order boot but sideload and push to device don't work. Its odd.

MTP, ADB, PC wont see them, ODIN pc see my phone. Also OTG my phone recognise it.

Hi all.
I need help.
My pc wont recognise my phone anymore. deleted all the drivers and everything.
ADB and USB not working.
But when i put my phone into download mode. my pc recognise my phone again.
But when booted my pc wont see my phone.
My phone only say's he's connected to a charger..
i already checked *#0808#
MTP + ADB is checked.
Tried this on other PC's and same error..
Think something is wrong with mounting data or something?
How did this happen,
i installed twrp recovery + crisscross mod.
After that MTP + adb isnt working anymore..
Flashed stock back on the phone but no results..
OTG is working great on the phone.
Please help
EDIT::
Problem is solved.
I drained the battery to 0%.
Didn't charge for an hour.
Connected phone to PC via USB, in Download mode.
Then flashed Philz recovery.
Reboot to system, and problem's were fixed.
Yes, I have the same problem. G920P
Teardown check after I found the USB interface power supply is normal!
The '1.9 v from The then measured normal tail current 5 v
I ruled out the power supply and USB interface problems
Has not ruled out the mainboard problem
The bodhi said:
Yes, I have the same problem. G920P
Teardown check after I found the USB interface power supply is normal!
The '1.9 v from The then measured normal tail current 5 v
I ruled out the power supply and USB interface problems
Has not ruled out the mainboard problem
Click to expand...
Click to collapse
you encountered the same problem after rooting?
Problem solved!
jer0o1 said:
you encountered the same problem after rooting?
Click to expand...
Click to collapse
NO. I tried all the way to still can't normal computer connection

Bricked d290n, not detected for PC - help needed

Hello everyone,
I think I've completely bricked my phone. I had a problem with security boot and after patching wrong "aboot.bin" it doesn't work Currently when i'm trying to turn it on, it only vibrates and nothing else happen. When I plug in the USB and connect it to the PC, phone also vibrates but isn't detected. When i put the battery off and connect the charger or usb it shows screen about not battery plugged.
Please help me and explain how to make it detected again.
nalif20 said:
Hello everyone,
I think I've completely bricked my phone. I had a problem with security boot and after patching wrong "aboot.bin" it doesn't work Currently when i'm trying to turn it on, it only vibrates and nothing else happen. When I plug in the USB and connect it to the PC, phone also vibrates but isn't detected. When i put the battery off and connect the charger or usb it shows screen about not battery plugged.
Please help me and explain how to make it detected again.
Click to expand...
Click to collapse
Unfortunately, there's nothing you can do at this point.. If you are still under warranty, just return the phone, they will probably change its motherboard or just change the phone itself. I have also been in the same situation as you, I tried everything, but nothing worked..
nalif20 said:
Hello everyone,
I think I've completely bricked my phone. I had a problem with security boot and after patching wrong "aboot.bin" it doesn't work Currently when i'm trying to turn it on, it only vibrates and nothing else happen. When I plug in the USB and connect it to the PC, phone also vibrates but isn't detected. When i put the battery off and connect the charger or usb it shows screen about not battery plugged.
Please help me and explain how to make it detected again.
Click to expand...
Click to collapse
Can you get into the download mode? Vol + and then plug a cable into your phone
And i have same problem,but no one dont know how to resolve this...
Are you install corect LG USB drivers ?

usb only charges, no data transfer

my nexus 6 will only charge no data transfer and pc wont recognize it. When i connect it to the pc it goes staright to charge mode and the usb trident symbol doesnt ever appear. In developer options usb configure is stuck in "charge mode" only. Ive tried different roms from pie to mm . i reinstalled bootloader and radio, tried twrp back ups and still the same. Had new charging port put in phone thinking that was the problem but didnt help. Ive searched google but couldnt find anything. Any Ideas, really appreciate it thx
When I installed stock rom which was android 7.1 it changed phone back to encrypted. Now i have to format internal drive in order to install a pie rom. Does anyone think that formatting internal drive might fix problem with not being able to do anything but charge phone from usb port, because if that doesnt fix it there would be no way for me to put any rom on my internal drive to install it.. Does anyone have any suggestions
kanpol said:
When I installed stock rom which was android 7.1 it changed phone back to encrypted. Now i have to format internal drive in order to install a pie rom. Does anyone think that formatting internal drive might fix problem with not being able to do anything but charge phone from usb port, because if that doesnt fix it there would be no way for me to put any rom on my internal drive to install it.. Does anyone have any suggestions
Click to expand...
Click to collapse
Just to double check that adb devices shows your serial #. If not, it may be a driver issue.
Computer doesn’t see it, when I enter adb devices it doesn’t show up. Nothing shows up in device manager either: Also when I enter fast boot on the phone “power lower volume button” it says “connect usb data cable” I’ve trued numerous cables that work fine on my other phone. So it’s not the cable. After I plug them into phone it still says connect usb data cable.
I also have a thumb drive with a micro usb connecter that used to work on the phone. Now the phone doesn’t see it when you plug it in to the phone. But it works on my other phone so it’s not the thumb drive
kanpol said:
I also have a thumb drive with a micro usb connecter that used to work on the phone. Now the phone doesn’t see it when you plug it in to the phone. But it works on my other phone so it’s not the thumb drive
Click to expand...
Click to collapse
It sounds like a driver problem. Is it a windows PC? Have you tried installing the Google USB driver? I've had similar issues, and reinstalling the driver(s) has worked for me.
It’s windows 10 and I reinstalled driver, other thing is in my car when I plug it in to the usb slot for android auto, it doesn’t show up in my car either and it used too.
It’s like the phone is stuck in charge only mode and I can’t get it out of that
kanpol said:
It’s like the phone is stuck in charge only mode and I can’t get it out of that
Click to expand...
Click to collapse
When you connect your other phone to your PC, does its serial # show up in adb devices? If so, I'm out of suggestions.
1 more thing.. Have you enabled USB debugging in Developer Options?
Other phones shows up and in devolpers options in “usb configuration” you can set it to mtp but when you hit enter it goes back to charge only. I was on” aiop 14.0 rom” when it happened but it was working fine on that rom , then one day android auto kept saying connect usb, so when I got home I tried to plug it into pc and nothing. So I replaced charging port thinking that was problem but it didn’t help. Flashed other roms and even went back to stock, reflashed bootloader nothing helped. I was hoping someone here had seen this before cause I googled it and nothing like this could I find
kanpol said:
Other phones shows up and in devolpers options in “usb configuration” you can set it to mtp but when you hit enter it goes back to charge only. I was on” aiop 14.0 rom” when it happened but it was working fine on that rom , then one day android auto kept saying connect usb, so when I got home I tried to plug it into pc and nothing. So I replaced charging port thinking that was problem but it didn’t help. Flashed other roms and even went back to stock, reflashed bootloader nothing helped. I was hoping someone here had seen this before cause I googled it and nothing like this could I find
Click to expand...
Click to collapse
Forget USB configuration for a minute. In developer options, under debugging, USB debugging needs to be enabled.
usb debugging is enable also. even tried turning it off and back on again, didnt help.
you know when you connect phone to pc and you normally see the usb trident symbol on your phone, well when i connect it to the pc i dont see that symbol it just goes straight to charging but even charging i should still see the usb symbol and i dont,

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