[Q] What has happened to my LG G2 (d802)? - General Questions and Answers

Hi!
I have switched my broken screen with a new one onto my G2, but after that it has started to act strange! I can charge it, but only "slow charge because of low power from power output", and when I connect it to my computer it just shows up as "unrecognized device". I've tried different cables and computers with same result.
And now another problem has occured, when I start the phone it seems to start normal with the LG logo and startup sound. But it is SUPER-LAGGY! Like 2 fps, the screen is responding but with super-delay. If I lock the screen, and then try to unlock it again, it's just black. Like it doesnt have the power to light up again, I still hear the sound of it unlock after swiping over the screen but the lcd stays dark.
But if I make a soft reset (holding powerbutton + volume down) it boots up and the lcd is lit, still superlaggy, and after locking it once it stays black.
As I said I've replaced the LCD and digitizer + bought a new usb-connector flex cable and switched it but the problem is still there.
Can anybody help me with this? I've googled for days and not found a single one with the same problem.
Regards, Björn.

maybe your motherboard is broken?

moro686 said:
maybe your motherboard is broken?
Click to expand...
Click to collapse
That theory has crossed my mind, but it seems a bit weird if it was broken since it boots and everything seems to work exept it cant connect to a PC, and is running at 2 fps.
Skickat från min iPhone med Tapatalk

benbom said:
That theory has crossed my mind, but it seems a bit weird if it was broken since it boots and everything seems to work exept it cant connect to a PC, and is running at 2 fps.
Skickat från min iPhone med Tapatalk
Click to expand...
Click to collapse
if it's broked does not mean that the device can normally boot....
my brother on GS4 were on the same situation, the device can boot normally but the screen is unusable because weird lines and artifacts appear.... he sent the device to samsung and the screen was ok
sorry for bad english typo

Related

[Q] Infinity won't start, just vibrating indefinitely

Hi gurus,
Updated the OTA patch today from ASUS. worked fine but got discharged while my son was playing with it. charged it and then tried to start it. It just won't boot. Starts vibrating which will not stop. Nothing on the screen. Pressing on Power button for about 10 seconds will stop it for a moment but will start again to vibrate after a short pause.
Tried the manual reset button, same result. Finally, pressed the power and Volume up button for 10 seconds which has atleast made it stop vibrating but is still dead. Tried to restart and same behaviour.
Has anyone seen this on infinity before? Have had it for 9 months and never been a problem.
Thanks in advance for your help.
Maybe a HDMI connection might let you see whats happening if its related to the display not working.
I am having the same problem. it vibrates..stop for 1 sec..then vibrates again and that's all..always black screen!! i think the problem (in my case) is my screen + digitizer coz my computer can recognize it as storage!
Yes my problem is the screen! i bought a micro HDMI to HDMI cable and everything works like a charm! The screen brightness works but no image at all!
Screenshots:http://db.tt/aBg7IXKd
Tried to charge it fully but to no avail.
still keeps just vibrating.
I work with leicesteruk (small world and why is he not using CROMi-X!?) and I think this is hard bricked! Device will not power on other than it vibrates once then on the second vibrate that normally signifies boot loader load it jus continuously vibrates and does nothing else. No screen, nothing.
We have tried various volume held down options and nothing works including reset hole and letting the battery drain. It still charges but just goes into continuously vibrating with no screen.
The only thing it will accept is power down plus volume down stops the vibrating after 20 secs if held down.
I have advised to RMA.
wow, that's extremely hard luck right after an update.
Was your tablet rooted, and were you using OTA root keeper?
Toastysoul said:
Was your tablet rooted, and were you using OTA root keeper?
Click to expand...
Click to collapse
No it was completely stock. Just a regular OTA. Note the device died whilst in use after the OTA had been applied the day before.
I hv solution for it
kvikas7 said:
I hv solution for it
Click to expand...
Click to collapse
any solution for hard brick / apx mode only that doesn't involve replacing motherboard ?

Difficulty after a screen change.

Hey,
A few months ago I unfortunately dropped my phone so the screen was up to no good.
I left it for some time until I found a new screen on the ebay for decent money.
I changed the screen (LCD + glass) by the guides on the youtube.
Unfortunately there is no screen activity or any other interaction after that.
I can get the blinking orange led when connected to a charger or PC and after a night of charging the led turned green.
When I try to turn it on theres no ordinary bottom row buttons flashing or anything else.
I tried booting it into bootloader via PC but still no luck. Computer can't connect to the phone.
The motherboard gets warm and the led blinks so it shouldn't be dead.
Does anybody have experience with that type of situation? Would hate to lose my phone.:crying:
So at the moment if I turn it on it just randomly vibrates after every 30 seconds lol.
Somehow if I fiddle around with the power button for long enough I can get the bottom row white leds to flash but thats all.
If I hold the power button hold long enough, the flashing stops and the charging lite turns from green to off or orange.
Can it be that the S4 screen doesn't fit on S3 or something like that? By visual comparing they look the same.
jaank said:
So at the moment if I turn it on it just randomly vibrates after every 30 seconds lol.
Somehow if I fiddle around with the power button for long enough I can get the bottom row white leds to flash but thats all.
If I hold the power button hold long enough, the flashing stops and the charging lite turns from green to off or orange.
Can it be that the S4 screen doesn't fit on S3 or something like that? By visual comparing they look the same.
Click to expand...
Click to collapse
It maybe because you have a s4 screen on a s3 phone or vice versa I believe that the s4 screen draws in more power so the s3 might not be able to give it enough don't quote me on this I just think this may be the answer
Sent from my SPH-L710 using Tapatalk
Flashalot said:
It maybe because you have a s4 screen on a s3 phone or vice versa I believe that the s4 screen draws in more power so the s3 might not be able to give it enough don't quote me on this I just think this may be the answer
Sent from my SPH-L710 using Tapatalk
Click to expand...
Click to collapse
Not so sure on this. On the visual inspection there are no difference and I can't really get the phone as far to even show anything.
Any ideas?

[Q] HTC One Mini won't turn on

Hi,
My girlfriend's HTC One Mini suddenly went black screen and wouldn't be turned back on again. I've tried the power button + vol. up/down trick and with or without charger plugged in, but it doesn't help. The phone vibrates a couple of times and the bottom buttons are flashing.. But that's it. Still dead.
Can you please help?
banjotrold said:
Hi,
My girlfriend's HTC One Mini suddenly went black screen and wouldn't be turned back on again. I've tried the power button + vol. up/down trick and with or without charger plugged in, but it doesn't help. The phone vibrates a couple of times and the bottom buttons are flashing.. But that's it. Still dead.
Can you please help?
Click to expand...
Click to collapse
If you connect the phone with the PC using the supplied USB cable, do you get any devices detected ?
htc_one_mini_m4 said:
If you connect the phone with the PC using the supplied USB cable, do you get any devices detected ?
Click to expand...
Click to collapse
I've been messing around a lot.. Sometimes I only get the connecting sound from Windows and nothing more. I think the screen is broken because one time I connected it, it showed up as I could access the drives on the phone.. But the folders are empty because I need to accept on the phone which is obviously impossible with a black screen. And also USB debugging is not turned on on the phone...
banjotrold said:
I've been messing around a lot.. Sometimes I only get the connecting sound from Windows and nothing more. I think the screen is broken because one time I connected it, it showed up as I could access the drives on the phone.. But the folders are empty because I need to accept on the phone which is obviously impossible with a black screen. And also USB debugging is not turned on on the phone...
Click to expand...
Click to collapse
Sounds like a dead screen.
Yeah.. The screen was for some reason broken.. Just got it replaced. No data lost.. Pew.
Sendt fra min One med Tapatalk
banjotrold said:
Yeah.. The screen was for some reason broken.. Just got it replaced. No data lost.. Pew.
Sendt fra min One med Tapatalk
Click to expand...
Click to collapse
Good news, great news if you got your screen replaced for free under warranty

Nexus 5 new screen is not working anymore

Hello,
I had an accident and after that my Nexus 5 screen was broken. So I decided to buy an new one from Amazon (~60$) and I tried to replace the screen on my own.
Yesterday I replaced the screen with a YT-Video, then I charged my Nexus 5 an the "Charging-Symbol" showed up.
After that I left the house for 2 hours and when I came back (I left the Nexus at home for charging ofc.) I tried to turn on the phone and nothing happened.
Then I tried to press power and volume down to get into the boot-menu and this also worked and the screen showed everything perfectly (!) and then I tried to start my handy from the boot-menu.
Until then everything has worked well but during the start progress I noticed that the (starting-)animation is really slow and laggy, so I decided to try to reboot my phone by holding power off for around 10 secs.
I tried to start my phone one or two times more and tried to get into the boot-menu, restart bootloader, etc. and then I realized that my phone didn't even want to work anymore. I could(and can) neither get into the bootmenu nor simply start it...
Do you have any ideas?
What suprised me the most is that it stopped working so quickly, so I concluded that I replaced the screen right but anything else went wrong...
Please help me :/
PS:
USB-Debugging is turned off and I cant access my phone with my pc or anythin else
Leave the phone on the charger for about an hour and then try to get into the bootloader.
When my phone is in the process of booting and I force it to power off by holding down the power button, it will not power up until I either leave it on a charger for a bit or leave it power off for a bit, usually 5 to 20 minutes.
audit13 said:
Leave the phone on the charger for about an hour and then try to get into the bootloader.
When my phone is in the process of booting and I force it to power off by holding down the power button, it will not power up until I either leave it on a charger for a bit or leave it power off for a bit, usually 5 to 20 minutes.
Click to expand...
Click to collapse
Thanks, now I could get into my phone and enable USB-Debugging with much lock D)
My problem is, that my phone runs very unstable and shuts down often so I can't really work with it.
Do you know any solution and the more important question:
How can I save my data? I think, that I can save it anyhow if I enabled USB-Debugging with the bootloader and a pc, can't I?
Yes, you could pull the data from the phone using ADB commands.
You could also flash twrp to the phone. Once flashed, you could boot into twrp, mount the data partition, and copy data from the phone to the computer.
You could also use twrp to create a nandroid backup for safekeeping.
Is it possible that there is a loose connection in the phone? Have you tried disassembling and re-assembling?
audit13 said:
Yes, you could pull the data from the phone using ADB commands.
You could also flash twrp to the phone. Once flashed, you could boot into twrp, mount the data partition, and copy data from the phone to the computer.
You could also use twrp to create a nandroid backup for safekeeping.
Is it possible that there is a loose connection in the phone? Have you tried disassembling and re-assembling?
Click to expand...
Click to collapse
I have now moved on!
My charger cabel was broken but now I got a new one!
I can start my Nexus (with some issues) and it runs but sometims it still shuts down and always when I try to plug in my cabel into the Nexus the screen gets black (but on the side you can see that the screen is light up in some way, idk...)
Is there a reason for the heating and for the shut downs? :/
I'm not sure but it seems like the screen has suffered a hardware malfunction because you can see that the backlight is on but no image.
audit13 said:
I'm not sure but it seems like the screen has suffered a hardware malfunction because you can see that the backlight is on but no image.
Click to expand...
Click to collapse
And that means what?
And can I do anything for it? Maybe flash it or something?
Reset, etc..
With a hardware failure, there's nothing that software can fix. Did you try disassembling and re-assembling the phone?
With the old screen, can you see anything on screen? Did the phone power up and charge properly? If yes, put on the old screen to test the other components to see if it charges and powers up.
audit13 said:
With a hardware failure, there's nothing that software can fix. Did you try disassembling and re-assembling the phone?
With the old screen, can you see anything on screen? Did the phone power up and charge properly? If yes, put on the old screen to test the other components to see if it charges and powers up.
Click to expand...
Click to collapse
Yeah first sentence makes sence..
I swapped software and hardware, sry
my other screen doesn't work at all, completly destroyed...
The problem is that I can't imagine what should be the failure...
And yeah, I already tried disassembling and re-assembling it...
Still same problem
I have used cheap 3rd party screens to replace a few N5 phones and they quality is very inconsistent so I wouldn't be surprised if a 3rd party screen fails after a short period of use.
audit13 said:
I have used cheap 3rd party screens to replace a few N5 phones and they quality is very inconsistent so I wouldn't be surprised if a 3rd party screen fails after a short period of use.
Click to expand...
Click to collapse
Nahh but the screen works I think..
Everything looks clear etc and the screen wasn't really cheap with 65$-70$ I guess..
I think it's something else because my phone gets really on near the CPU and this can't be because of the screen...
Where did you get the screen?
If it gets really hot near the cpu, then something else is going on. Could it be possible that there is a short-circuit somewhere?
Since the value Canadian dollar has dropped, I'm also paying about $60 for what was a $40 screen.
audit13 said:
Where did you get the screen?
If it gets really hot near the cpu, then something else is going on. Could it be possible that there is a short-circuit somewhere?
Since the value Canadian dollar has dropped, I'm also paying about $60 for what was a $40 screen.
Click to expand...
Click to collapse
Yeah, I also thought about a short-circuit but I don't know how I can test this.
When I try to start my phone it fails like 4-5 times and then it works most of the time. The fail looks the following:
The "Google" logo appears and then suddenly the screen gets black, but not the "out"-Black (so that screen it out), I mean the "on, but black"-Black (hope u can understand.. xD)
During this 4-5 Tries my phone feels like 40°C-50°C (sry im from Germany, idk the conversion to °F value.. )
After this (I got the phone running one time for about 20 minutes) the phone doesn't heat up so much, if it starts right I think that the temparatur problem is over, but there is still the problem (also if the phone is running for 20 minutes) that it suddenly shuts down... :/
Sorry, idk much about canadian dollar, like I said im from germany and I payed around 65€
Google says, that this is around 67 (US-Dollar)
I don't know what to suggest other than either getting a new battery or new screen. Both items can be very expensive.
audit13 said:
I don't know what to suggest other than either getting a new battery or new screen. Both items can be very expensive.
Click to expand...
Click to collapse
Mhh, ok :/

blocked on black screen

Hello,
Ive tried to look for a similar situation in other thread but each case is different so i open a new one.
This morning, when i took my idol 3 the screen did not switch off when pressing power button. I thought it was battery but when i plugged charger,nothing happened except the led is on continuously. I kept power button pressed for 10 seconds. The phone vibrates shortly but still a black screen, no sound and no reaction from the touch panel. Power+vol+ did not led me to my twrp recovery. What can i do now to get it work again? The phone is rooted with Rom Eu 4.2 from murigny64 and it is the first time i encounter this issu. Thanks in advance for helping me
Tonight i disconnected the battery for about 30min then connect it again. Then i tried to start in recovery: Just a vibration but no display and no sound. I unplugged/plugged the battery again and try to start. Same problem. What the hell could happen? Maybe a deffective hardware
Insist on boot ( normal or in to recovery with vol + and power).
That is a hardware brick.
Happened to me to some times, insist, it will unbrick
persona78 said:
Insist on boot ( normal or in to recovery with vol + and power).
That is a hardware brick.
Happened to me to some times, insist, it will unbrick
Click to expand...
Click to collapse
Hopelessly i tried to restart several times before you post your message. But im gonna try again.
I charged the phone all the night but nothing better and the phone is not detected on pc so no adb action possible.
Maybe the battery is dead...
nigloud said:
Hopelessly i tried to restart several times before you post your message. But im gonna try again.
I charged the phone all the night but nothing better and the phone is not detected on pc so no adb action possible.
Maybe the battery is dead...
Click to expand...
Click to collapse
Can be, can be to... To bad if is battery.
But still trying to boot, is very difficult to.
.
thank you for advise but it's still not working. I spend about 30 minutes trying different combination of button: power pressed until it vibrate, power+vol up, power+vol down, power+vol up & down, discontinuous press of power with charger and no charger....and so on. Its a complete failure.
If it is the battery, there was no sign of weakness before (short life, random shutoff, ....) . It happen suddenly: I lock my screen before sleeping and the next morning no way to switch it on again.
I thought I would avoid problems for long with a twrp recovery, a backup and adb tools on my pc.....but for hardware issues its useless.
How can I be sure it is battery before purchasing another one ?
nigloud said:
How can I be sure it is battery before purchasing another one ?
Click to expand...
Click to collapse
There is also possibility that your screen has been broken
Sent from my 6045I using Tapatalk
belkoo said:
There is also possibility that your screen has been broken
Sent from my 6045I using Tapatalk
Click to expand...
Click to collapse
If it was the screen the touch panel would work and i could sense vibration when typing the pin code no?
The led bright continuously when i plug instead of flashing slowly as it used to do when charging. That why i think its battery.
...and when i start in recovery the phone is not detected on my pc
That's hardware brick. Don't give up, try to boot, normally or in recovery, keep trying it will boot.
Have you tried to open the phone and disconnect battery? Custom ROMs made me similar issue a few times.
jani0417 said:
Have you tried to open the phone and disconnect battery? Custom ROMs made me similar issue a few times.
Click to expand...
Click to collapse
Wtf idol 3 has non removable battery haha
Sent from my 6045I using Tapatalk
belkoo said:
Wtf idol 3 has non removable battery haha
Sent from my 6045I using Tapatalk
Click to expand...
Click to collapse
Therefore the back can be dismantle and we can access battery and that s what i did.
Yes i disconnected it for several hours and pluged it again but it gave me the same result. And now it doesnt vibrate anymore when i keep the power button pressed a while.
I purchased a battery on internet and im waiting for delivery to test if im right or not. Il feedback about the test.
Anyway its nice from you to look for any solution. Thanks
nigloud said:
Therefore the back can be dismantle and we can access battery and that s what i did.
Yes i disconnected it for several hours and pluged it again but it gave me the same result. And now it doesnt vibrate anymore when i keep the power button pressed a while.
I purchased a battery on internet and im waiting for delivery to test if im right or not. Il feedback about the test.
Anyway its nice from you to look for any solution. Thanks
Click to expand...
Click to collapse
I guess you did everything properly, so just one thing: at first time when I did this, I choosed the wrong cable (which didn't 'reset' the phone), so I hope you pulled both out.
jani0417 said:
I guess you did everything properly, so just one thing: at first time when I did this, I choosed the wrong cable (which didn't 'reset' the phone), so I hope you pulled both out.
Click to expand...
Click to collapse
I think i choose the good connection: This is the one over the battery with 6 wires: 2 red, 2 white and 1 black (see picture attached). I just left it with a small screwdriver to disconnect.
nigloud said:
I think i choose the good connection: This is the one over the battery with 6 wires: 2 red, 2 white and 1 black (see picture attached). I just left it with a small screwdriver to disconnect.
Click to expand...
Click to collapse
Yep, that's it
Hello,
I received the new battery today.
So i unpacked it, i unplugged the old one and plugged the new one ...and guess what happened......the same bevahiour as with the old battery: when i press the button power, it vibrate but it doesnt start neither in recovery nor in normal mode.
I just precise that the new battery is charged at 50%........:crying:
So the problem is not the battery but it was the only thing i could test by myself before sending the phone to alcatel for repair.
Im still wondering what could happen to my idol 3: It had been woking perfectly for months and one morning with no warning, it refuse to switch on. Ok sorry for annoying us and hope it wont happen with yours.
I hope alacatel will apply the guarantee although the phone is rooted and bootloader unlocked....because its a hardware issue i think.
Hello,
Just to conclude. The phone got back from repair after 10 days. They have changed motherboard, battery and also the back that was damaged. Its a brand new phone .

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