Strange battery problem (Xiaomi mi a2) - Xiaomi Mi A2 / 6X Questions & Answers

Hello,
I am facing a strange problem with xiaomi's battery. Sometimes the device turns off without warning. After shut down it starts up normally but cannot enter the Android system, when I insert the unlock pattern it tries to boot (only wallpaper showing) for 2-3 seconds and then shuts down again. The only way to avoid this state is to plug the charger and let it charge for several minutes. After this all are working properly. Any ideas??
I forgot to mention that if I don't enter the unlock pattern(try to enter Android system) the device will remain open.

kostas205 said:
Hello,
I am facing a strange problem with xiaomi's battery. Sometimes the device turns off without warning. After shut down it starts up normally but cannot enter the Android system, when I insert the unlock pattern it tries to boot (only wallpaper showing) for 2-3 seconds and then shuts down again. The only way to avoid this state is to plug the charger and let it charge for several minutes. After this all are working properly. Any ideas??
I forgot to mention that if I don't enter the unlock pattern(try to enter Android system) the device will remain open.
Click to expand...
Click to collapse
Well, that's a mistery. Did you try to do factory reset?

kostas205 said:
Hello,
I am facing a strange problem with xiaomi's battery. Sometimes the device turns off without warning. After shut down it starts up normally but cannot enter the Android system, when I insert the unlock pattern it tries to boot (only wallpaper showing) for 2-3 seconds and then shuts down again. The only way to avoid this state is to plug the charger and let it charge for several minutes. After this all are working properly. Any ideas??
I forgot to mention that if I don't enter the unlock pattern(try to enter Android system) the device will remain open.
Click to expand...
Click to collapse
Huh.. yuck. That's weird. Try resetting your phone. If it still doesn't work, it's probably the battery?.

I haven't tried factory reset yet. I think that is something more software oriented because it occurs when the device tries to load Android system. Something like an application bug. Probably factory reset will do the job. I'll let you know.

Related

Some serius help needed. Bootloop, stuck, bootloader not working etc..

Hi. To start with I bought a phone from a friend which I knew was faulty but decided to take my chances and try to fix it. He claims he did nothing to the phone but don't know for sure. Phone is in constant bootloop, Goes until splash screen and reboots. Worst yet to come - even bootloader menu restarts on constant basis when i try to get into it. Meaning it goes into bootloader but restarts in few seconds before i can get to factory reset. Computer is not picking up this device but i also don't have any drivers installed but don't even know how to install them with a phone in this state. Is there anything i can do about it? Been with Samsung for the past few years and here is everything completely different so don't know much about adb but am a quick learner and can follow any steps! I can provide picture of bootloader if it would be any helpful.
michal_alton said:
Hi. To start with I bought a phone from a friend which I knew was faulty but decided to take my chances and try to fix it. He claims he did nothing to the phone but don't know for sure. Phone is in constant bootloop, Goes until splash screen and reboots. Worst yet to come - even bootloader menu restarts on constant basis when i try to get into it. Meaning it goes into bootloader but restarts in few seconds before i can get to factory reset. Computer is not picking up this device but i also don't have any drivers installed but don't even know how to install them with a phone in this state. Is there anything i can do about it? Been with Samsung for the past few years and here is everything completely different so don't know much about adb but am a quick learner and can follow any steps! I can provide picture of bootloader if it would be any helpful.
Click to expand...
Click to collapse
Send a picture of the bootloader while I find the drivers you need
Seems like battery is completely dead as it only reboots when there is power supply connected, but then it won't turn off (any charging light don't come on, not sure if it should though). Just now i've seen a vodafone logo for a very short second when I connected to pc from charger. But phone rebooted again just after.
HTC_Phone said:
Send a picture of the bootloader while I find the drivers you need
Click to expand...
Click to collapse
edit. downloaded drivers (4.8) but that didn't change anything and windows still doesn't pick up device.
After connecting my one to computer for past 3 hours its started more frequently boot and showing Vodafone menu but still restarts shortly after. Vodafone logo shows on and lights on soft buttons starts flashing like 3 times and than it keeps rebooting. Does it mean anything?
michal_alton said:
Seems like battery is completely dead as it only reboots when there is power supply connected, but then it won't turn off (any charging light don't come on, not sure if it should though).
Click to expand...
Click to collapse
Have you checked this: http://forum.xda-developers.com/showthread.php?t=2481211
michal_alton said:
After connecting my one to computer for past 3 hours its started more frequently boot and showing Vodafone menu but still restarts shortly after. Vodafone logo shows on and lights on soft buttons starts flashing like 3 times and than it keeps rebooting. Does it mean anything?
Click to expand...
Click to collapse
That almost sounds like your POWER button is stuck!! Are you able to completely power off, and it stays off.
I think i know what it is. Power button stuck and keeps restarting device. Although i can feel pressing it, this is what it looks like.
nkk71 said:
Have you checked this: http://forum.xda-developers.com/showthread.php?t=2481211
That almost sounds like your POWER button is stuck!! Are you able to completely power off, and it stays off.
Click to expand...
Click to collapse
Didn't see your comment but this is exactly how it looks to me. I can't switch off phone and in bootloader it acts like i was pressing power button. Although it operates normally meaning that it can be pressed down. Arranged warranty repair with HTC and they are collecting phone tomorrow.
michal_alton said:
Didn't see your comment but this is exactly how it looks to me. I can't switch off phone and in bootloader it acts like i was pressing power button. Although it operates normally meaning that it can be pressed down. Arranged warranty repair with HTC and they are collecting phone tomorrow.
Click to expand...
Click to collapse
Good luck mate, but definitely sounds like the power button is stuck
It's been fixed under warranty by HTC. They replaced motherboard on mine HTC. So all good

Freezes, reboot and other funky things

Sorry for my bad English
Hello friends of the forum, I present my problem. I was given to repair a S3 LTE really is driving me crazy. We'll explain: the owner did filth with ROM to the point to make it unusable. Turns on, but after a while it stops and turns itself off. I tried to flash the stock, wipe system etc .. from recovery and put back the stock, but every time I turn on the phone and get to the Initial Setup (the one that says Samsung GALAXY which allows choosing the language) crashes and off. Also known that the recovery is very very slow (both TWRP that stock that cwm). I managed to flash rom 2 including Cyanogenmod but this crashes. Sometimes the poor cell can not even start that hangs on and off. I tried to replace the battery with one that I already had and the situation does not change. I wanted to try to do an update of the bootloader because I think the problem is the. Further inform you that when it crashes but is charging if I remove the battery on the phone stays on but completely locked and I can not even press the power button for 3 seconds, because it is completely freezed. Another observation I have noticed is that if I leave him in charge when switched off the led solid red, the screen shows no signs of life and if the detachment micro usb LED remains lit sign that is completely blocked even when it is charging (WHILE TURNED OFF!). I hope you can help. I tried everything
Maybe it's power button problem.Check the power On/Off .

[Q] LG G Watch R refuse to turn on

This morning I noticed that my watch was restarting itself a few times while on charging dock, so I thought that there might be a new OTA. Then, when I'm about to leave, it just stay dead (it says disconnected on the phone too).
I tried long press (5, 8, almost a minute), nothing happens. When I placed it back onto the dock, it just show full battery icon and then nothing. I tried long-pressing the button while on the dock too, nothing...
I'm at loss here, if possible I'd like to avoid return (problematic, coz it is imported).
inscythe said:
This morning I noticed that my watch was restarting itself a few times while on charging dock, so I thought that there might be a new OTA. Then, when I'm about to leave, it just stay dead (it says disconnected on the phone too).
I tried long press (5, 8, almost a minute), nothing happens. When I placed it back onto the dock, it just show full battery icon and then nothing. I tried long-pressing the button while on the dock too, nothing...
I'm at loss here, if possible I'd like to avoid return (problematic, coz it is imported).
Click to expand...
Click to collapse
1. Hold the button until it starts vibrating, then keep holding until it turns off.
2. Press the button to turn it back on and then QUICKLY (as SOON as the LG logo shows), swipe from 11 o-clock to 5 o'clock (diagonally) on the screen to enter the bootloader.
3. Once you see the bootloader, tap > until the red text says RECOVERY MODE, then tap O to boot into recovery.
4. Once you see the green droid robot, tap the screen to bring up the recovery menu.
5. Swipe down until the factory reset option is highlighted, then press the button.
6. Swipe down until Yes is highlighted, then press the button.
7. Wait for the factory reset to complete.
8. Swipe up to highlight "reboot system now" in the recovery menu if it's not already highlighted and press the button to reboot.
9. Wait until the watch boots into the setup screen - this will take about 3x-5x longer than a normal boot, so be patient.
10. Set up the watch with your phone.
siraltus said:
1. Hold the button until it starts vibrating, then keep holding until it turns off.
2. Press the button to turn it back on and then QUICKLY (as SOON as the LG logo shows), swipe from 11 o-clock to 5 o'clock (diagonally) on the screen to enter the bootloader.
3. Once you see the bootloader, tap > until the red text says RECOVERY MODE, then tap O to boot into recovery.
4. Once you see the green droid robot, tap the screen to bring up the recovery menu.
5. Swipe down until the factory reset option is highlighted, then press the button.
6. Swipe down until Yes is highlighted, then press the button.
7. Wait for the factory reset to complete.
8. Swipe up to highlight "reboot system now" in the recovery menu if it's not already highlighted and press the button to reboot.
9. Wait until the watch boots into the setup screen - this will take about 3x-5x longer than a normal boot, so be patient.
10. Set up the watch with your phone.
Click to expand...
Click to collapse
I would have done the following if the thing actually can boot in any way. It seemed that it was stuck at some point in the booting process and somehow went into a 'limbo' state?
Thanks for the complete description, but here's how it ended up to me: it seemed that the watch was in an ON state all the while this thing was happening. I waited about 12 hours, until it is seemingly out of juice completely. Then, putting it back to the charger turned it back on and boots properly. Hopefully it won't happen again to me, or I have to send it back to the seller, really...
LG R watch "not turning on"
inscythe said:
This morning I noticed that my watch was restarting itself a few times while on charging dock, so I thought that there might be a new OTA. Then, when I'm about to leave, it just stay dead (it says disconnected on the phone too).
I tried long press (5, 8, almost a minute), nothing happens. When I placed it back onto the dock, it just show full battery icon and then nothing. I tried long-pressing the button while on the dock too, nothing...
I'm at loss here, if possible I'd like to avoid return (problematic, coz it is imported).
Click to expand...
Click to collapse
I'm in the same situation let see if once my watch gets fully charge I will try to do the process, you are not the only one with this problem
---------- Post added at 12:37 PM ---------- Previous post was at 12:29 PM ----------
inscythe said:
This morning I noticed that my watch was restarting itself a few times while on charging dock, so I thought that there might be a new OTA. Then, when I'm about to leave, it just stay dead (it says disconnected on the phone too).
I tried long press (5, 8, almost a minute), nothing happens. When I placed it back onto the dock, it just show full battery icon and then nothing. I tried long-pressing the button while on the dock too, nothing...
I'm at loss here, if possible I'd like to avoid return (problematic, coz it is imported).
Click to expand...
Click to collapse
alextabata said:
I'm in the same situation let see if once my watch gets fully charge I will try to do the process, you are not the only one with this problem
Click to expand...
Click to collapse
The last thing I remember was that I update my watch to the new lollipop android update.
Does it create the problem of in watch????
This process it's no working !!!!!!!
siraltus said:
1. Hold the button until it starts vibrating, then keep holding until it turns off.
2. Press the button to turn it back on and then QUICKLY (as SOON as the LG logo shows), swipe from 11 o-clock to 5 o'clock (diagonally) on the screen to enter the bootloader.
3. Once you see the bootloader, tap > until the red text says RECOVERY MODE, then tap O to boot into recovery.
4. Once you see the green droid robot, tap the screen to bring up the recovery menu.
5. Swipe down until the factory reset option is highlighted, then press the button.
6. Swipe down until Yes is highlighted, then press the button.
7. Wait for the factory reset to complete.
8. Swipe up to highlight "reboot system now" in the recovery menu if it's not already highlighted and press the button to reboot.
9. Wait until the watch boots into the setup screen - this will take about 3x-5x longer than a normal boot, so be patient.
10. Set up the watch with your phone.
Click to expand...
Click to collapse
How can I do the 2 step if the screen don't show any lg logo or any light at all?
By the way my phone says the watch is connected.
Please help
I have the same problem with my LG G Watch, it doesn't show LG logo, just showing charging and blinking with big battery logo while connected with charging cradle.
I keep it for 2 week to wait for battery drain, and again when I connect charging cradle it shows the same thing.
I guess there's something problem with hardware.
Anyone can guide me, how can i fix this.
Need help.
I just experienced the same issue. Leaving the watch to drain the battery does not help. Is there any other solution?
You're the man! Thanks for the step by step instructions! One thing I would add to your instructions would be to do all this while the watch is sitting on the charger. Seems like my watch didn't charge at all and when I tried to hold down on the button nothing happened until I did so with it sitting on the charger during the whole process. I just started to setup my watch and it's at 5% so that was definitely the case!
---------- Post added at 08:57 AM ---------- Previous post was at 08:55 AM ----------
Do the whole process with the watch sitting on the charger. This worked for me like a charm. The reason it's not doing anything is because the watch can't charge until you reset to factory settings.
---------- Post added at 08:57 AM ---------- Previous post was at 08:57 AM ----------
Do the whole process with the watch sitting on the charger. This worked for me like a charm. The reason it's not doing anything is because the watch can't charge until you reset to factory settings.
This happen to me once too. What is did was to just put the watch in the charger n long press the function button for about a min n it started up. For some reason the watch got stuck in a loop while it was charging over night. I have been experiencing a few strange bugs happen during the past few weeks. Such as watch zooming n not responding to touch control n watch not responding to turn wrist light up display.
My g watch also no stay "on" anymore, two days ago [battery was 57%] shuts down suddenly and since then I can not start this watch .
Tried everything, this anoying loop is killing me, if I put it for some time in the charger dock starts for a couple of seconds and shuts down [ sometimes shows starting 36 apps and after finish shuts down again]. Also for a couple of time I entered in recovery mode and reset and wipe, but from today I can not enter in bootloader anymore.
If stays on the charger not showing anything [ only if I kep the buton pressed for 30 sec start to blink the battery icon until I keep the button pressed.
Run out of methods, is something that I am not tried ? Keep all night on the charger , but the same litlle loop [ the watch is very hot on charger but I think is not charging].
Please some one can help me ?
Same issue
mobiemi said:
My g watch also no stay "on" anymore, two days ago [battery was 57%] shuts down suddenly and since then I can not start this watch .
Tried everything, this anoying loop is killing me, if I put it for some time in the charger dock starts for a couple of seconds and shuts down [ sometimes shows starting 36 apps and after finish shuts down again]. Also for a couple of time I entered in recovery mode and reset and wipe, but from today I can not enter in bootloader anymore.
If stays on the charger not showing anything [ only if I kep the buton pressed for 30 sec start to blink the battery icon until I keep the button pressed.
Run out of methods, is something that I am not tried ? Keep all night on the charger , but the same litlle loop [ the watch is very hot on charger but I think is not charging].
Please some one can help me ?
Click to expand...
Click to collapse
____________________________________________________________________________________________________
It started after the 5.1.1 update and we are not the only ones having this issue. I am trying to charge it while in bootloader mode using a higher voltage charger. I will report back if it works
tristarwolf said:
____________________________________________________________________________________________________
It started after the 5.1.1 update and we are not the only ones having this issue. I am trying to charge it while in bootloader mode using a higher voltage charger. I will report back if it works
Click to expand...
Click to collapse
OK,
Charging the LGR in bootloader mode worked but I am still having issues so now I am going to try to re-flash it.
If I leave the watch alone for a couple of hours and I put it in the charger, starts first time showing 36 apps and after it's shuts down. After that it starts for 2 or 3 times but only until those colored balls, then is dead again [ even if I leave it on the charger for all night ]. Also tried with 2.0 A and 1.0 A charger.
The worst is that I can not enter in bootloader mode anymore, when it starts on the LG icon I try in vain with my finger from 10.00 clock to 17.00 , the watch is not responding anymore to this command. Only when I put it on the charger and keep pressed the button for more then 30 seconds the battery icon is flashing, when I relese the button the battery icon disapears.
Very disapointed, I have to throw it in the garbage and I never will buy LG.
LG R watch fixed
mobiemi,
I got my watch back to working. First, delete all android wear apps from your phone do the same for the Android wear app. Next, clean the screen off (since you are having issues) then let it charge for a few minutes to an hour (even if it looks like its not charging it is). Once charge it might come back on all on its own (let it do so). After it tries twice it will not do it power on again (still let it sit for awhile longer). Next, take it off the charger and power the watch on and try to access the bootloader by swiping downward from 11 to 5 and perform a factory reset, put the watch back on the charger. Once done do a reboot and it will attempt to reset but might power off, don't panic mine did the samething. Finally let it sit on the charger awhile later it will come back on in factory reset mode, ready to connect to your phone. Let the watch sit to recharge before downloading the android wear app and connecting it back to your phone. FYI I did three times heres why- once I added an app it went back to having the same issue as before with restarting and dying. So word of advice do not install any apps. Google is working on a new update to fix the issue so be patient. I hope this helps!
Thank you for your detailed explanations, tried your method but dosen't work because I can not enter bootloader mode [ I think my watch has not enough power to start the bootloader ].
The screen is very clean and the watch not react at my command. I remember last week I was able to resurect once the watch with similar method like you, but now has not enough juice to start proper. When I put it in the charger show 1 second the battery icon, then starts with LG icon [ in vain try to enter bootloader ], once from 10 times starts, goes until starting 36 apps and shuts down [ when I left it for a period of time and is not that warm like when is lifted from charger ], but mainly not goes far then colored balls.
I have not another explanation for not entering the bootloader and why not going further than a few seconds. Left it 1 minute, half hour and also all night on the charger [ the watch get warmer ], with multiple charger and also from laptop usb.
My watch is slowly dying, only when I put it in the charger start for maximum 5 seconds and shuts down, after that I try again to start without charger [on the charger not starts at all ] and again after 4 seconds is dead. When starts the screen with LG icon did not react at all to finger touch , could not enter bootloader anymore[ lack of power ? ] I think in a couple of days is dead . Courious when is in the charger for longer period it gets very warm but in vain. Unfortunatelly I have no warranty.
I've had the same issue so I sent it in and I am patiently waiting to get it fixed. In the meantime they sent me a list of items they'll replace...
PCB assembly
Rechargeable battery
Cover assembly
LG2 (no idea what that's going to be)
Sent from my HTC One using Tapatalk
tristarwolf said:
mobiemi,
I got my watch back to working. First, delete all android wear apps from your phone do the same for the Android wear app. Next, clean the screen off (since you are having issues) then let it charge for a few minutes to an hour (even if it looks like its not charging it is). Once charge it might come back on all on its own (let it do so). After it tries twice it will not do it power on again (still let it sit for awhile longer). Next, take it off the charger and power the watch on and try to access the bootloader by swiping downward from 11 to 5 and perform a factory reset, put the watch back on the charger. Once done do a reboot and it will attempt to reset but might power off, don't panic mine did the samething. Finally let it sit on the charger awhile later it will come back on in factory reset mode, ready to connect to your phone. Let the watch sit to recharge before downloading the android wear app and connecting it back to your phone. FYI I did three times heres why- once I added an app it went back to having the same issue as before with restarting and dying. So word of advice do not install any apps. Google is working on a new update to fix the issue so be patient. I hope this helps!
Click to expand...
Click to collapse
I'm having the same problem like mobiemi. I'm trying your method without deleting all android apps in my phone since I wiped data and cache from my watch's recovery mode. Since it cannot connect to my phone due to not being able to boot properly, I don't think it's necessary to uninstall the apps from my phone. But I've been resetting and wiping data&cache from my watch but it's still doing the same thing. It shuts down on its own after "starting apps xx of xx". Sometimes it will boot till the colored dots and after that it will go blank and shuts down.
Yeah, I thought the same thing at first until I got it back up and running the first time and as soon as the old apps were sent back to the watch it started looping all over again. I was able to reinstall my apps after the latest android wear update. My LGR is currently working with apps and holding a charge longer than a day.
kevzz01 said:
I'm having the same problem like mobiemi. I'm trying your method without deleting all android apps in my phone since I wiped data and cache from my watch's recovery mode. Since it cannot connect to my phone due to not being able to boot properly, I don't think it's necessary to uninstall the apps from my phone. But I've been resetting and wiping data&cache from my watch but it's still doing the same thing. It shuts down on its own after "starting apps xx of xx". Sometimes it will boot till the colored dots and after that it will go blank and shuts down.
Click to expand...
Click to collapse
Hope is not true, unfortunately you are after me, after a while you can not enter either the bootloader . For two weeks I do nothing but I try to turn it on.
*If the button does not turn, I put in charger: starts 10 seconds goes out and turns back for another 30-40 seconds [colored balls], sometimes flashing until the 36 apps loaded, then goes off . I tried hundreds of times, placed in charger, power on from button, put back on charger, left and so on until going crazy.
**Because not enter bootloader I thought the touch it not works anymore, but by a miracle last week lit one minutes [came in white screen apps Starting 36] and went out, I powered by button and the screen shows the welcome screen, language, [responding to commands], unfortunately I was in another room and appeared on the screen put me in charge, until I got to the charger it faded again. From then I do not manage to get out of this deadly circle.
If someone manage to escape from this loop please help me with detailed steps.

Screen won't turn on after 0% battery shutdown

So I sideloaded 5.1 and was fine all day long. Was down to 8% then I notoced the 1% warning 30 seconds later. It shut down before I could plug it in. I booted up and everything seemed normal but the screen wouldn't turn on after the boot screen. I could take a screenshot and power it off but that's it. After a few times cycling it, It started going into the boot as it did when I first installed the update. Optimizing apps, I figured that would fix the problem but sa,e black screen. I tried booting into recovery mode. It just shut it down when I chose that option. I can see the time and unlock screen when I wave my hand over it. Unlocking it does nothing. I get red LED when I hit the power button one time.
I ended up doing a system wipe and it's back to normal now. I'd still like to know the solution in case it happens again.
If it happens again try first to reboot by holding power and volume down buttons for 10 seconds and/or wipe cash
I am having the exact same issue. Has anybody had a luck resolving it short of a factory reset?
My phone battery died last night. I plugged my phone in, let it get about 15% charge, then tried to turn it back on. The phone boots like normal, but after the boot animation goes away, the screen is black. Active notifications still seem to work, and I can hold the power button to get the Power Down option. I can boot into the bootloader & access recovery just fine. However, my phone is fully stock (no root, no bootloader unlock, no anything). I can't seem to access ADB when the phone is powered normally (ie, when I'm at this mysterious black screen), but it's possible that USB debugging isn't even enabled.
So far, I've found a bunch people who've said a full factory reset will fix the problem, but I'm looking for another solution, or at least a way to grab my data before I reset. Since my bootloader's still locked, I can't seem to use fastboot boot to boot into TWRP, and I can't find any other way to access my data to copy it off the phone. I've tried wiping the cache using the stock recovery to no avail. Any suggestions?
bjg222 said:
I am having the exact same issue. Has anybody had a luck resolving it short of a factory reset?
My phone battery died last night. I plugged my phone in, let it get about 15% charge, then tried to turn it back on. The phone boots like normal, but after the boot animation goes away, the screen is black. Active notifications still seem to work, and I can hold the power button to get the Power Down option. I can boot into the bootloader & access recovery just fine. However, my phone is fully stock (no root, no bootloader unlock, no anything). I can't seem to access ADB when the phone is powered normally (ie, when I'm at this mysterious black screen), but it's possible that USB debugging isn't even enabled.
So far, I've found a bunch people who've said a full factory reset will fix the problem, but I'm looking for another solution, or at least a way to grab my data before I reset. Since my bootloader's still locked, I can't seem to use fastboot boot to boot into TWRP, and I can't find any other way to access my data to copy it off the phone. I've tried wiping the cache using the stock recovery to no avail. Any suggestions?
Click to expand...
Click to collapse
Please stop bumping up every topic that says black screen with the same copy and paste message. Once was enough!
Sent from my XT1095 using Tapatalk

Oneplus 3t not work

Hi all .. I have a phone but nothing appears on the screen and when I connect the phone to the charger shows the sign of the charger until the green sign appears, which means full battery .. What do these things show? Is the screen damaged or motherboard problem ? Please Help
Try holding the power button down for 10 seconds or more, and see if there is any change. Also try power+vol up (which normally boots to bootloader) and hold for 10 seconds or more.
Jnoubileb said:
when I connect the phone to the charger shows the sign of the charger
Click to expand...
Click to collapse
You mean the charging animation on the screen, or just the LED charge light?
If it's showing the charge animation, your screen is okay. And at least have a working bootloader, as well.
redpoint73 said:
Try holding the power button down for 10 seconds or more, and see if there is any change. Also try power+vol up (which normally boots to bootloader) and hold for 10 seconds or more.
You mean the charging animation on the screen, or just the LED charge light?
If it's showing the charge animation, your screen is okay. And at least have a working bootloader, as well.
Click to expand...
Click to collapse
thanks for your replying >>
i mean the led charge light ..also when i connect my phone to laptop , all files on memory appear
Jnoubileb said:
thanks for your replying >>
i mean the led charge light ..also when i connect my phone to laptop , all files on memory appear
Click to expand...
Click to collapse
I gave another suggestion about holding the power/vol buttons. I have no idea if you tried, and if so, whether there was any change.
Reading the files on internal storage to me, means the phone is booted to OS. So I agree that it appears the phone is on, but screen is either not working, or somehow darkened all the way.
What is the history of this device, and did anything happen before the current condition? Did it just happen spontaneously, or did you drop it or try to open it to fix anything? Try to install anything? Is the phone modified at all (TWRP, root, etc.) or basically still stock? Even if it happened spontaneously, did it happen when you were using it (and if so, what were you doing exactly)? Or just picked it up and it was this way?
I try to press power button 10 sec and more and power+ vol+ nothing happened on screen just vibrate ....the problem for my phone appear without any open to phone
Jnoubileb said:
I try to press power button 10 sec and more and power+ vol+ nothing happened on screen just vibrate ....the problem for my phone appear without any open to phone
Click to expand...
Click to collapse
Do you have debugging turned on? Know how to use adb?
i think is on before the problem appear
Jnoubileb said:
i think is on before the problem appear
Click to expand...
Click to collapse
Then connect the phone to a computer, type:
adb devices
And see if your phone's ID is returned, or if there is an error or just hangs "Waiting for device".
If it returns your phone's ID, then the phone is booted to OS (or alternately, booted to custom recovery will also allow adb connection). So to me, this means the phone is on, but the screen is not working (not displaying anything) like you suggested. adb won't connect if the phone is not on (and booted to OS).
redpoint73 said:
Then connect the phone to a computer, type:
adb devices
And see if your phone's ID is returned, or if there is an error or just hangs "Waiting for device".
If it returns your phone's ID, then the phone is booted to OS (or alternately, booted to custom recovery will also allow adb connection). So to me, this means the phone is on, but the screen is not working (not displaying anything) like you suggested. adb won't connect if the phone is not on (and booted to OS).
Click to expand...
Click to collapse
the phone now on mtp mode
C:\WINDOWS\system32>adb devices
adb server is out of date. killing...
* daemon started successfully *
List of devices attached
3a55e345 unauthorized
So it looks like adb is connecting. I think it is saying "unauthorized" since the phone's screen is trying to prompt you to authorize adb commands (which you obviously can't see or respond to). But it is obtaining the device's ID code. Which by the way, is unique to your device. So I would advise to remove it from your previous post. Don't know if it is dangerous for other folks to have this, but better safe than sorry. Simply telling us that an ID code was returned, would have been sufficient.
Moral of the story, I am thinking the phone is booted to OS, just the screen is not displaying anything. Screen may be broken, as you somewhat were guessing from your top post. I suppose there is a possibility it may be some software fault. You can try to eliminate this as the cause, by possibly booting to bootloader, which should allow fastboot access, then flash a stock recovery image. Although it may be tricky without seeing the display. Since if you need to see the display, or select anything during the process (don't recall if you do or not), you are out of luck.
Although I tend to think this is a hardware issue. Screen may be malfunctioning. Or it may be as simple as a loose connector.

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