Fingerprint sensor stopped working - Xiaomi Mi A1 Questions & Answers

Had the screen replaced on my MiA1 recently.
Initially when I got it back the fingerprint sensor worked, but seemingly not as well as it had. I put it down to the hot weather. Now, 3days later it's not working at all
Could this be related to the screen repair? (Assuming yes), if so, is it a fix I can do myself out do I need to try argue it out with the shop?
Ta
Sent from my Mi A1 using Tapatalk

vaderag said:
Had the screen replaced on my MiA1 recently.
Initially when I got it back the fingerprint sensor worked, but seemingly not as well as it had. I put it down to the hot weather. Now, 3days later it's not working at all
Could this be related to the screen repair? (Assuming yes), if so, is it a fix I can do myself out do I need to try argue it out with the shop?
Ta
Click to expand...
Click to collapse
open back cover
check fingerprint connector attached or not....its very simple....

Silly question maybe but is there any instructions on removing the back cover??
Sent from my Mi A1 using Tapatalk

Related

Touchscreen problem - is this a known issue or a hardware defect?

Hi,
i own my nexus for one week, and today i used a smart cover which caused some troubles.
first all worked like a charm, close the flap, display off, open it, display on. magnets, how do they work? ****ing magic! :laugh:
well, a couple hours later the touchscreen wasnt responding after shutting down the display. at first, after opening and closing the flap a few times the touchscreen worked again, but by now its totaly ****ed. if the display shuts down, all i can do is pressing the power button for a couple seconds and then start again. (it has nothing todo with the smart cover, i think it was just a coincident)
heres what i have done so far:
- factory reset
- flashed the stock rom (i only unlocked the device)
- re locked the bootloader (mainly because im pretty sure its a hardware issue and i wanna return it...)
is there anything else i can do? i know that there are many issues with the touchscreen, but from what i read, its about ghosting and other glitches, not a complete breakdown that can only be fixed by rebooting and occurs as soon as the display shuts down.
thanks for your help!
What brand of smart cover/case are you using? and do you still have the same problems even without the cover?
bolo808 said:
What brand of smart cover/case are you using? and do you still have the same problems even without the cover?
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Click to collapse
yeah, the problems are even without the cover. i thought there was maybe a problem that the hall sensor got magnetized or whatever, but that doesnt fit with the symptoms.
i use this case:
http://www.amazon.de/IVSO-Smart-Cover-Tasche-PC-passen-Schwarz/dp/B00D3L3168
heldgop said:
yeah, the problems are even without the cover. i thought there was maybe a problem that the hall sensor got magnetized or whatever, but that doesnt fit with the symptoms.
i use this case:
Click to expand...
Click to collapse
Yeah seems that it's more of a hardware issue that was probably caused from the case if anything. Good thing you already re-locked the bootloader since I'd suggest returning it for a replacement. Just don't mention anything about using a case . If you do get a replacement, maybe try a different case to avoid the same problem.
Is using a case with a magnetic cover against tos?
Sent from my Nexus 7 using xda app-developers app
Richieboy67 said:
Is using a case with a magnetic cover against tos?
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
No, otherwise why would they have put the sensor in the device to react to it?

Is my proximity sensor defective?

Hi everyone,
I've just got my new N6P and I found out that whenever I make phone calls the screen turns black and unresponsive until about 10 seconds after the call is ended. I can end the call with the power button and after locking and unlocking the phone the screen goes back to life.
I've read a lots of thread in this forum talking about screen protector causing this problem, but I have no screen protectors installed.
I also tried cleaning my phone very well and some other suggested workarounds: install Google Fit; disable ambient display; disable daydream; disable adaptive brightness. None of them worked.
Finally, I tried installing some apps to verify the behavior of the proximity sensor, but all of them just show that the proximity sensor measure 0cm of distance; of course there's absolutely nothing covering it.
In your opinion, is that a software problem or a hardware problem? Should I RMA my phone ASAP?
Thanks
Ieracos said:
Hi everyone,
I've just got my new N6P and I found out that whenever I make phone calls the screen turns black and unresponsive until about 10 seconds after the call is ended. I can end the call with the power button and after locking and unlocking the phone the screen goes back to life.
I've read a lots of thread in this forum talking about screen protector causing this problem, but I have no screen protectors installed.
I also tried cleaning my phone very well and some other suggested workarounds: install Google Fit; disable ambient display; disable daydream; disable adaptive brightness. None of them worked.
Finally, I tried installing some apps to verify the behavior of the proximity sensor, but all of them just show that the proximity sensor measure 0cm of distance; of course there's absolutely nothing covering it.
In your opinion, is that a software problem or a hardware problem? Should I RMA my phone ASAP?
Thanks
Click to expand...
Click to collapse
Try reflash system if you think it's software (you'll have to unlock your bootloader so its recommended to backup your internal storage.)
But to me it sounds like its an hardware issue
Sent from my Nexus 6P using Tapatalk
Nevermind, I misread.
JustPlayingHard said:
Try reflash system if you think it's software (you'll have to unlock your bootloader so its recommended to backup your internal storage.)
But to me it sounds like its an hardware issue
Sent from my Nexus 6P using Tapatalk
Click to expand...
Click to collapse
Don't you think that reflashing my phone will void my warranty?
Ieracos said:
Don't you think that reflashing my phone will void my warranty?
Click to expand...
Click to collapse
Nope, as long your bootloader is relocked again, your warranty company won't know
Sent from my Nexus 6P using Tapatalk
JustPlayingHard said:
Nope, as long your bootloader is relocked again, your warranty company won't know
Sent from my Nexus 6P using Tapatalk
Click to expand...
Click to collapse
Ok
So, another question comes to my mind right now: is reflashing worth trying in order to solve my problem?
Ieracos said:
Ok
So, another question comes to my mind right now: is reflashing worth trying in order to solve my problem?
Click to expand...
Click to collapse
Yes it is. What you're experiencing is most likely a hardware issue but it's worth a try. For the record, even if you left your bootloader unlocked it wouldn't matter, having an unlocked bootloader has no effect on the warranty with a Nexus device. If you need instructions on flashing the factory images I have a detailed guide here:
http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928
Heisenberg said:
Yes it is. What you're experiencing is most likely a hardware issue but it's worth a try. For the record, even if you left your bootloader unlocked it wouldn't matter, having an unlocked bootloader has no effect on the warranty with a Nexus device. If you need instructions on flashing the factory images I have a detailed guide here:
http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928
Click to expand...
Click to collapse
Ah I thought you had to relock the bootloader for warranty. You learn something new everyday
Sent from my Nexus 6P using Tapatalk
Thanks for your answers guys. I'll flash my N6P and let you if my problem will be solved.
I asked the store which sold me the N6P and they told me to return the phone without any software modification, so I'm not attempting to reflash it.
Thanks anyway for your help.
Do u have a screen protector on? Some don't have the correct cutouts for the sensor and that makes it read 0.
I have a fairly thick tempered glass screen protector with no cut outs where the sensor is located and it works perfectly. I use Wakeup Touch Nexus which uses the sensor and it works well. Sounds like a hardware issue to me.
Sent from my Nexus 6P using Tapatalk
tharweb said:
I have a fairly thick tempered glass screen protector with no cut outs where the sensor is located and it works perfectly. I use Wakeup Touch Nexus which uses the sensor and it works well. Sounds like a hardware issue to me.
Sent from my Nexus 6P using Tapatalk
Click to expand...
Click to collapse
As far as I know all screen protectors that cover the glass affect the sensor. Take it off and I bet u it'll work fine. I went through two screen protectors before I got one with the cutout.
csstamatin said:
As far as I know all screen protectors that cover the glass affect the sensor. Take it off and I bet u it'll work fine. I went through two screen protectors before I got one with the cutout.
Click to expand...
Click to collapse
He said it's already working perfectly.
Can you try to reboot to safe mode and then try again? Sometimes its just 3rd party apps that are causing issues likes this.

Proximity Sensor issue ... I think

Hey guys,
My Oneplus 5 is working fine without issues but when I make a phone call and have the phone up to my face on almost every call the speaker phone ends up going on by itself. I think this is because the screen is turning on even though the phone is up to my face which would probably be the proximity sensor. It might be worth noting that i use the phone on my left ear as I am a lefty. Is anyone else having this problem and does anyone know a solution to this problem?
Thanks!
NYFan said:
Hey guys,
My Oneplus 5 is working fine without issues but when I make a phone call and have the phone up to my face on almost every call the speaker phone ends up going on by itself. I think this is because the screen is turning on even though the phone is up to my face which would probably be the proximity sensor. It might be worth nothing that i use the phone on my left ear as I am a lefty. Is anyone else having this problem and does anyone know a solution to this problem?
Thanks!
Click to expand...
Click to collapse
Me too... The only solution i find its block the screen
Enviado do meu ONEPLUS A5000 através de Tapatalk
Are you using a screen protector that covers the sensor?
Sent from my ONEPLUS A5000 using Tapatalk
Devhux said:
Are you using a screen protector that covers the sensor?
Click to expand...
Click to collapse
No I'm not using anything but a cheap gel back protector.
I have the same problem. But I thought the screen was turning on because of double tap to wake .
Same issue here, I even started a thread about it weeks ago. Seems like there must be a dodgy batch of sensors.
I'm going to send mine back under warranty once I can get my 6o back from my daughter so I have a backup phone.
Sent from my OnePlus5 using XDA Labs
I have the same issue. I used *#808# to check whether the Proximity sensor is working as it should. And it does. For me it more looks like a software issue

October update broke the smart cover function?

Hi.
I was so happy that i for once had a phone where everything just worked.
That was untill the october patch. About 1059 Mb.
Now my magnetic smart cover doesent wake up or shut down the screen anymore.
By the way im totally stock.
Anybody else experienced this?
Thanks
Knievel
i had this on the september update mate
Name of your cover?
Mine was nillkin mate
Sent from my Mi A1 using Tapatalk
Hey, guys, my LeEco 1S died completely and I am thinking to buy this Mi A1.
Would you recommend it from XDA point of view? I am into flashing and modding but plan to after voiding the warranty(after a year).
Please let me know. Also, I didn't know this device supports magnetic covers like Samsung S-series. A Flipkart link would be helpful, I'll add to my cart to buy when I have funds.
Thanks.
I tested the hall sensor and it's working fine but no go with a cover
Sent from my Mi A1 using Tapatalk
KnieveI said:
Hi.
I was so happy that i for once had a phone where everything just worked.
That was untill the october patch. About 1059 Mb.
Now my magnetic smart cover doesent wake up or shut down the screen anymore.
By the way im totally stock.
Anybody else experienced this?
Thanks
Knievel
Click to expand...
Click to collapse
i have same issue on my phone after this update ...
i tested my hall sensor...its working fine
stasevgl said:
i have same issue on my phone after this update ...
can anybody talk how to check my hall sensor?
Click to expand...
Click to collapse
You need a magnet mate the dial *#*#6484#*#* and choose hall sensor then run the magnet all over the front of the phone untill it senses it
Sent from my SHIELD Tablet K1 using Tapatalk
robgee789 said:
You need a magnet mate the dial *#*#6484#*#* and choose hall sensor then run the magnet all over the front of the phone untill it senses it
Sent from my SHIELD Tablet K1 using Tapatalk
Click to expand...
Click to collapse
thank you for answer!
do you know how to fix this issue? just wait new update or there is any easy way to downgrade?
stasevgl said:
thank you for answer!
do you know how to fix this issue? just wait new update or there is any easy way to downgrade?
Click to expand...
Click to collapse
My hall sensor works mate just not with a smart cover so it's pretty useless but yeah hopefully it will work again in an update
Sent from my Mi A1 using Tapatalk
KnieveI said:
Hi.
I was so happy that i for once had a phone where everything just worked.
That was untill the october patch. About 1059 Mb.
Now my magnetic smart cover doesent wake up or shut down the screen anymore.
By the way im totally stock.
Anybody else experienced this?
Thanks
Knievel
Click to expand...
Click to collapse
Same here!
The flip (Nillkin) was ok before and during the upgrade, with factory settings. I was happy for 1-2 hours only....
After November update problem solved.
Good news is that the 1 Dec firmware update resolve the smart cover issue.

Xiaomi mi a1 sounds

Hello guys,
So I had my xiaomi from Amazon, and it was cool with that price and quality. Unfortunately, it dropped to water and all are good but my screen still scratched with water and dual camera doesn't working now (only main).
Well, my speaker was good that time and went like one or two days it was nothing problem and now my speaker won't work when I play like 2 hours or around that. However, when I turn it off for 1 hour my speaker back to normal or when I reseted factory my phone speaker's working and then 2 hours later it back broken again..
My question is what happened to my phone? Is that hardware or software or my rom problem? For hardware I went my phone to rice as well but still scratched inside screen
I hope you guys can help me, thanks!
You probably got water damage as those aren't software related issues.
Sent from my Mi A1 using Tapatalk
Ulver said:
You probably got water damage as those aren't software related issues.
Click to expand...
Click to collapse
Then if it's caused from water damage but how it still worked when I reset? I just download normal app from my old Samsung after reseted fabric my phone. I will test it without download any app now
Thanks for answer though!

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