Fingerprint sensor and screen not responding - freeze - Xiaomi Mi A2 Lite Questions & Answers

Hey everyone,
couldn't find a topic about this yet so here I am. I recently got a Mi A2 lite and happily unlocked it, rooted it and so on. Worked perfectly fine till yesterday. Then suddenly it started to freeze. Meaning the fingerprint sensor didn't have any reaction anymore. I couldn't use the screen anymore either. I was able to start the screen by pressing the power button once, it was also possible to press it twice to start the camera or keep pressing it to show the restart menu or forcefully restart it, but no matter what I did I couldn't interact with anything on the screen. So I had to forcefully restart the phone and then it was working fine again until some time later.... I've had it like 6 times in 90 minutes so I decided to make a clean install and see what happens. Rooted the phone again and it was the same once again... Didn't change anything.
Now I locked my phone again (getting ready to send it back) and will try "stock" and see if the root has anything to do with it.
My guess is that it's a hardware problem but before I send it back I wanted to check if anyone here has another idea or solution.
Thanks in advance
Edit: Stock isn't working either, error still happening. I'm returning it.

Related

[Q] Touch Screen Not Working

Guys my N7 touch screen suddenly stop working, I din't drop it or nothing fell on it, I was just using it, I put it down on the side, when I tried to unlock it, it didn't work, I gave a minute and the same happen.
This happened last night, my battery still has some juice and I don't know how to re-start it?
Help please.
palomosan said:
Guys my N7 touch screen suddenly stop working, I din't drop it or nothing fell on it, I was just using it, I put it down on the side, when I tried to unlock it, it didn't work, I gave a minute and the same happen.
This happened last night, my battery still has some juice and I don't know how to re-start it?
Help please.
Click to expand...
Click to collapse
If you press and hold volume down and power that will reboot it.
Holding down the power button should be able to restart it also. Try that, and then try a cold-boot if that didn't work. It might be a faulty digitizer, and if so, I would recommend sending it in for service. We can fix the touch screen issue for you pending any physical damage to it.
You're not the only one
http://forum.xda-developers.com/showthread.php?t=2386151

[q] screen is glitchy after dropping!

Two days ago, my T-Mobile Samsung Galaxy S3 dropped out of my coat pocket as i was running for the bus. I picked it up and saw the screen was cracked along the top left and bottom left hand side. Everything was working for the past two days and i figured i'll just wait till Christmas to get a new phone. This morning i took my phone off the charger and turned it on. The Samsung logo flashed, and then the boot animation for Slimrom (the custom rom i'm currently running on) flashed for about a second but then the screen went black. I did a battery pull but the weird thing is whenever i put my battery back in, even without touching the power button, it boots up by itself but then the screen goes black again. I can access TWRP and download mode but they both go black after a few seconds as well. I was able to successfully turn on my phone and have it fully function for about 15 minutes after putting it back on the charger, but it quickly blacked out again. It also keeps randomly booting up by itself which is weird. Im guessing this is a problem with the screen itself, but could it be a software issue because the device keeps booting up by itself? If it is the screen, will i have to buy a new one or is it not worth it? I've also tried using a different battery and i have the same issue so it can't be that. Any help is appreciated!
Sounds like an issue with the power button, it probably got stuck somehow either when you dropped it, or after you dropped it. Do a simple search for power button and you will find ways to fix it!
Holy crap i didn't even think of that! It makes total sense since every time i even tap my power button, even for just a second, it turns on. I've read around that clearing the cache or a factory reset could work. Is this true?
Unlikely, unless it's a software issue but it's always a possibility. Slam the phone against something to try to get the power button back into place, or open it up and try to see if you can fix it yourself, or replace it
The problem seems to be gone. I haven't had any issues for two days now. All i did was press the power button really hard multiple times. Thanks for you help man!

[Q] Weird problem with screen-HTC One X

Hello,
I was looking through the XDA, but haven't found anything similar, so I hope somebody could have an idea what could it be.
First of all, phone is HTC One X-32GB International version.
Few days ago, I noticed that after some idle time, my HOX touch screen becomes unresponsive.At first, I didn't pay too much attention, because everything was fine after restar by power button, but problem continued to repeat.I thought it could be because of the heavy use, so I started to disable app by app but nothing changed.I restarted it several times after that and noticed that if I try side buttons, they show volume is going up and down when I press them.Also a big screen clock is normally working, so my next guess was that maybe a factory reset would solve the problem,but it didn't.
So what i shappenintg?
When I surf the net,or dialling numbers,or whatever else, everything works fine to the moment I stop touching it and leave it idle for a while.After few minutes, screen is unresponsive, doesn't matter if I put screenlock on or of.I can't even answer the call when it rings.Everything looks just as it should look,but is unresponsive.Except side buttons.Then again I have to restart it with long press power button.If I don't touch the screen after phone restarts, after minute or two it goes to unresponsive state again.
I hope somebody has idea what could or what should I do.
Thanks in advance
*update
Sometimes helps if I press power button...
*update 2
Now it's not helping any more if I press power button, seems that power button is not reacting at all sometimes, only if I hold him long enough to restart it.
In fact, now even restart is not helping.
I'm sorry, what ROM do you have? And do you have sweep2wake function on? 'cause I also have had problems with touch, when s2w was on, but I am not sure, what was the ROM that time...
VaskivskyiYe said:
I'm sorry, what ROM do you have? And do you have sweep2wake function on? 'cause I also have had problems with touch, when s2w was on, but I am not sure, what was the ROM that time...
Click to expand...
Click to collapse
It's a stock ROM-And sweep2wake is not on.
Have no idea what else to try.I tried to unlock bootloader,put CWM in because you can control it with buttons, made a backup of everything to USB, format everything, put everything back, but problem is still here.Now I also noticed that it has a delay when push power button for example when I press it screen goes off immidiately,but when I press it again, sometimes it takes 20 seconds just to turn screen on again.And of course, it still not reacting.
Now my last hope is that a ROM became corrupted somehow,so I will try to delete everything, and put some other ROM in.
Since, I am a noob, there will be a lot reading for me .
Everything wiped, unboxed ROM on, and a problem still persists.
Newest discovery:if I twist upper right corner a little bit, everything works fine.
Sent from my HTC One X using XDA Free mobile app
Open up your phone and check the connector for the digitizer is properly connected, even remove it and blow into the connector to make sure there's no dust causing problems.
You can test the screen response before putting the back cover on again, its pretty easy and there are videos on YouTube showing how to remove the back, good luck.
intel007 said:
Open up your phone and check the connector for the digitizer is properly connected, even remove it and blow into the connector to make sure there's no dust causing problems.
You can test the screen response before putting the back cover on again, its pretty easy and there are videos on YouTube showing how to remove the back, good luck.
Click to expand...
Click to collapse
I found some time to open it yesterday evening, and connectors are as they should be.I also tried to remove them, and blow them out, but no use.
Thank you anyway.
I think I will sell it like this for parts.

[noob inside] - Screen unlocking problem, faulty device or android bug ?

Hey there guys , I've been searching through the forum topics about my issue but so far I've found nothing close to my scenario.
A few months ago I bought my first HTC phone (M8). Its a great device for sure , despite the fact that I had to return it back twice.
First time it was a faulty microphone , so they sent me back a brand new device. Great isn't it ?
However recently I've noticed a few .... let me call them 'glitches' .
Let me give you some details on what I've experienced with the device:
Despite the issues that i'm going through ... the phone works great, but...
Sometimes the screen wont turn on when I'm receiving incoming calls (same goes for the alarm clock) but the phone is able to recognize touches - i've managed to pick up the call when I swiped the screen in the area where the "green" answer button appears .
The above issue doesnt happen so often but the thing that bothers me is the unlocking issue.
At first I thought that it was stuck or faulty power button.
When the phone is idle for some time and I pick it up and press the unlock button ... nothing seems to happen I've tried pressing it hard ... i've tried pressing it gently ... i've tried pressing it multiple times until the screen wakes up .
Same goes for motion launch unlocking .
When I use motion launch to unlock it the phone only gives me a vibration feedback ... and thats it until I try harder to bring the screen back to ''life'' .
(I can also press my security pattern buttons while the screen is dead and feel the phone vibrating , BUT NOT ALWAYS , sometimes is just .. dead )
I already sent the phone back describing the same problems and they just flashed the firmware , which did not fix any of the issues.
Stock Rom android 5.0.1 , not rooted
Soo what do you guys think? What can I do next .. is it android bug or a faulty unit ?
is it possible to be a sensor problem (proximity , accelerometer)
Already tried factory reset and dalvik cache wipe.
Any advice would be useful.
Thanks for taking your time .
Cheerz
I have the same issue. There are times it takes me hitting the power button 20 times for it to finally light up but I can press buttons with it black. The weird thing is it does it on every single ROM but I havent noticed it on Stock...maybe I'm not using stock enough to see. I'll probably throw stock on there today and take it into sprint and let them replace it.
I have the same problem whether it's on stock or custom ROM (KK or L). I am pretty sure this is a hardware problem. Unfortunately, my m8 is out of warranty so HTC won't fix it for free. I read it some where that it could be a faulty proximity switch so shining a light beam to the top part of the phone may wake up the screen. I haven't tried it yet because every time it happens, I don't have a flash light handy. It is an annoying problem to say the least.
When this happens, I pushed the power button, the volume up button, and swiping the screens. Eventually the screen would wake up and every thing works fine... until the next time.
Its a ****ing pain in the ass.
however none of the sensor reading apps report a faulty/stuck sensor.
the wors thing... I've already sent my phone for repair, describing the problems in details. .. and it took them a whole f*cking month to bring it back to me with no results.
I don't think they will replace it because its a problem that takes time to be experienced...and no one is going to wait for it to happen. ...
Any other ideas?
Should I wait for android 6.0 or should I try a custom rom too see if these problems presist.
Fml I love the phone but this is frustrating.
I have the same problem I think. I just bought an M8 on Ebay. I am S-off, unlocked and rooted, using the Viper Rom currently. I have also tried AICP, the stock Tmobile Rom and a few others. Same issue.
If I double tap, I feel the screen vibrate, but nothing comes on. Then, I keep pushing power button a few times. Sometimes it comes on and sometimes I am too impatient to wait, so I just hold power and volume up.
I also know that the phone internals come on, because after that vibration, I swipe up and push the screen a few times. Then, when I am fiddling with the power button and it does come on, I do see that there is an app already on the screen.
I think this is a rare issue, as I haven't even been able to find many posts regarding this. I may have to get a new one if this keeps going on so bad.
Ozger said:
I have the same problem I think. I just bought an M8 on Ebay. I am S-off, unlocked and rooted, using the Viper Rom currently. I have also tried AICP, the stock Tmobile Rom and a few others. Same issue.
If I double tap, I feel the screen vibrate, but nothing comes on. Then, I keep pushing power button a few times. Sometimes it comes on and sometimes I am too impatient to wait, so I just hold power and volume up.
I also know that the phone internals come on, because after that vibration, I swipe up and push the screen a few times. Then, when I am fiddling with the power button and it does come on, I do see that there is an app already on the screen.
I think this is a rare issue, as I haven't even been able to find many posts regarding this. I may have to get a new one if this keeps going on so bad.
Click to expand...
Click to collapse
I am experiencing the exact same issue with my M8. I have seen a lot of people stating it may be a hardware fault related to heat and internals but something about how it reacts seems software related.
I really hope someone who has fixed or uncovered the reason comes forward. At this rate I may be switching back to a S4 LTE-A.
Soulink said:
I am experiencing the exact same issue with my M8. I have seen a lot of people stating it may be a hardware fault related to heat and internals but something about how it reacts seems software related.
I really hope someone who has fixed or uncovered the reason comes forward. At this rate I may be switching back to a S4 LTE-A.
Click to expand...
Click to collapse
I think it IS hardware related. I was able to return that one and got another M8. No problems at all.

LG G3 unresponsive/extremely slow

Hello there. I have to write this again becuase the last topic I wrote didnt get posted...
I have a big problem with my G3 and I have tried everything I could but nothing helped so I hope you can help me.
First of all my phone is only stock. I didnt try rooting it or installing custom roms on it.
Heres the whole story of what happened:
A week ago my phone started to act strangely. When I tried turning the wifi off it restarted or froze for a bit and then went on normaly as if nothing happened. I didnt even have to input my pin. Then one day I got home and the phone simply started reseting itself constantly. Always loaded up to the pin screen but I didnt even have time to input the pin and it reset it self again. This went on for like 15 reset before I lost patience and pulled the battery which didnt help at all since after being turned back on it went back to the reseting. I found online that it was probably a battery problem but I was impatient (shipping to my country is over 2 weeks and buying a battery in stores here costs twice the normal price of a genuine battery but only for a "fake" battery) so I factory reseted it via power button+volume down. After that it worked normally but I lost all my data.
The day after this I spilled ice tea on the phone. I opened it, cleaned it and let it dry out. Turned it on after an hour of drying and it worked but after maybe 2 hours it began freezing. When I tapped on the screen it didnt react, when I pressed the power button it took more then 10 seconds to react to it. It turned on, didnt react to touch and then in mere seconds it went dark and then turned off. I couldnt even unlock the screen. Tried pulling the battery but then it wouldnt even turn on. It stayed on the LG logo. I left it on the logo and on the charger and after an hour or so it turned on and worked normally so I took it apart and cleaned it once more even under the screws and such and it worked after that. Until today.
The freezing problem returned. I was playing a game on it and chatting via messenger when the phone stopped reacting. I had signal, wifi, I got new notifications and basically everything on it worked but the screen didnt react to touch and when pressing the power button it took over 10 seconds to light up the screen, then it went darker and then it shut down. Couldnt do anything. After I pulled the battery it would get stuck in a boot loop for maybe 10-15 minutes and then load but the phone couldnt be used. Just as before the screen turned on with a delay but no reaction to touch whatsoever.
I tried factory reset, downgrading to a lower android version (from 6 to 4) with LGUP and lg flash tool, and I bought a new battery. Nothing worked. I managed to get it to android 4 but that didnt help either. I though it was a problem with 6 because the problem started after the update, before that I didnt have a single problem with my phone.
Now its in a state where it doesnt work. The phone is running, apps are upgrading after the factory reset and all that but I cant do anything with it. Once in a while it will work normally as if nothing but that is rare.
Could you please help ? I love this phone and I dont want to have to sell it for spare parts.
EDIT: I left the phone running to see what would happen an after several hours an error message appeared saying "Process system isnt responding". After pressing ok it worked fine. How can I fix this. I googled it but all I found was a problem with sd card (none is inside), with battery (I have a new one) and with rooting (mines not rooted).

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