Fingerprint sensor problem - Xiaomi Redmi 7 Questions & Answers

Hello, so I've been using the phone for a year and I'm planning to root it but I still haven't. The thing is the sensor was working for the first few months and it kept getting worse and now it never unlocks using it. Is there any known fixes?

Maybe clean it. I remember mine sometimes doesn't detect my fingerprint properly.

Darth Bidder said:
Maybe clean it. I remember mine sometimes doesn't detect my fingerprint properly.
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i cleaned it really well. my brother's fingerprint works properly and everytime so the problem is my finger doesnt work nomore i guess

possible effects of the sensor

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Problem with Proximity sensor and Network Issue on note 2

Hello Guys,
I'm facing issue with my Samsung Galaxy Note II proximity sensor and Network Issue on it,
Network Part:- First of all it was working fine, after getting patch for KitKat 4.4.2 and installing network issue arise, like suddenly i'm not able to make call's or receive it or even unable to access 3G internet on it, it will show 2 tower on device and "H" symbol but no calls will be done or receive it, while network goes unavailable.
Proximity Sensor:- Proximity sensor is not working properly from last 15-20 days, I tried resetting device, blowing air on sensor on whole device, executed few application gyroscope explorer and few other, but issue still persist.
Today I came to know, when I press front camera part or near to it, then proximity sensor is working fine with out any for a while, then again I need to press it near front camera.
Thanks waiting for your solution's....
Did you managed to get a solution for that!
msnewton19 said:
Did you managed to get a solution for that!
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just replace proximity sensor, it's cheap and helped me to solve similiar issues. my sensor got stuck in one position, sometimes was ok, but now it's working very good, paid 6$ with delivery. easy install
yaro666 said:
just replace proximity sensor, it's cheap and helped me to solve similiar issues. my sensor got stuck in one position, sometimes was ok, but now it's working very good, paid 6$ with delivery. easy install
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Appreciating your feedback.
It would be great if you explain a little how to install such part! And from where I can buy it.
Many thanks for your valued support.

No notification LED after MM update on ZE551ML?

Maybe it is just me and my device, but since the MM update (the real one, not the beta) my notification LED doesn't work. I have tested it with text messages, emails, missed calls, charger plugged into my computer, charging plugged into a standard charger, and charging plugged into the fast charger... nada on any of them.
Anyone having this issue? If so how have you rectified it? It has been a minute since I first got this thing (got it at launch) and the MM update reset all my settings so maybe there is a setting to turn it back on I am missing?
Help out a brother if you can. Thanks.
OK, so does anyone have any suggestions for an app that might help by letting me manually setup the notification LED?
Is Do not disturb mode on?
Sent from my ASUS_Z00AD using XDA Premium HD app
madman604 said:
Is Do not disturb mode on?
Sent from my ASUS_Z00AD using XDA Premium HD app
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Thanks for the reply. It is not in DND as far as I can tell (not on).
If you haven't already, try a factory reset first
Trotter516 said:
Thanks for the reply. It is not in DND as far as I can tell (not on).
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Have you found a fix for that? Facing the same issue and so far no luck.
godzin said:
Have you found a fix for that? Facing the same issue and so far no luck.
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Actually yes. After I wiped my phone for my wife the notification now works.
Another issue that I recently found the solution to... if your ZF2's proximity sensor has gotten crazy sensitive since the update try cleaning it. Seriously. Especially if you have a tempered glass screen protector. I thought the piece of advice was bogus but I cracked out my lens cleaning spray and cloth and BOOM, the proximity sensor works correctly again.
Trotter516 said:
Actually yes. After I wiped my phone for my wife the notification now works.
Another issue that I recently found the solution to... if your ZF2's proximity sensor has gotten crazy sensitive since the update try cleaning it. Seriously. Especially if you have a tempered glass screen protector. I thought the piece of advice was bogus but I cracked out my lens cleaning spray and cloth and BOOM, the proximity sensor works correctly again.
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Thanks! Got the led working again after a factory reset.
By the proximity sensor do you mean the little one next to the selfie camera or the GPS?
After a lot of fixed I've got the ZF2 working fine, except for the "smartlock - safe places" that thing can never work right.
godzin said:
Thanks! Got the led working again after a factory reset.
By the proximity sensor do you mean the little one next to the selfie camera or the GPS?
After a lot of fixed I've got the ZF2 working fine, except for the "smartlock - safe places" that thing can never work right.
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Sorry, I just realized that you had replied.
Yes, the one beside the camera. Many have had an issue where the screen goes black after you start or answer a call, especially after the update. It seems the update made the proximity sensor much more sensitive. Since all decent screen protectors have a small cutout for the proximity sensor it will tend to accumulate dirt and oil from your skin. Wiping it down doesn't seem to get it clean enough for the sensor so you have to get a little more aggressive to clear the problem up. I went months enduring the problem and even set my phone so I could disconnect from calls using the power button and then ended up stumbling over the solution when setting up the phone for my wife when I upgraded to my Axon 7.
No led indicator
Hi i've been experiencing the same issue. After I update my zenfone 2 ZE551ML 4gb/64gb version, I have noticed that the led incator is not working and it is not found in the settings. Also, another issue I have encountered is that quick charging feature is not working sometimes but sometimes it works. I don't know how to fix. I'd be glad if someone could help with a step by step process. Thanks in advance!

Fingerprin issue

The fingerprint rarely recognises my finer...its annoying as i have to use my pattern ..is this happening only to me or anyone of you guys rae facing it ...and im using a case..it doesnt block the sebsor or so ...but ...it doesnt work properly ..is there any fix for this???please help
venkatkrishna_s said:
The fingerprint rarely recognises my finer...its annoying as i have to use my pattern ..is this happening only to me or anyone of you guys rae facing it ...and im using a case..it doesnt block the sebsor or so ...but ...it doesnt work properly ..is there any fix for this???please help
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I don't usually have an issue but I found that not sliding my finger onto the sensor makes it work much more reliably. I just try and tap centered on the sensor and it works almost every time.
lampel said:
I don't usually have an issue but I found that not sliding my finger onto the sensor makes it work much more reliably. I just try and tap centered on the sensor and it works almost every time.
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I usually tap ..because of the case ..there is no place to slide ...like 99% it won't recognize..it was working before .. recently this has started
venkatkrishna_s said:
I usually tap ..because of the case ..there is no place to slide ...like 99% it won't recognize..it was working before .. recently this has started
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So back for repairs then. Or You can try Factory reset.
EricH7001 said:
So back for repairs then. Or You can try Factory reset.
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I'll reset the phone and check
lampel said:
I don't usually have an issue but I found that not sliding my finger onto the sensor makes it work much more reliably. I just try and tap centered on the sensor and it works almost every time.
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I had the same issue, someone in the forum suggested enroll the same finger multiple times for more data, the sensor is pretty small and easily stops working due to sweat and oil, keep the back of your phone pristine at all times, that might help a little, you will run into less issues this way.
Although I gave in and started using Pin authorization recently.
venkatkrishna_s said:
The fingerprint rarely recognises my finer...its annoying as i have to use my pattern ..is this happening only to me or anyone of you guys rae facing it ...and im using a case..it doesnt block the sebsor or so ...but ...it doesnt work properly ..is there any fix for this???please help
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This happens in my case too....at every 15-20min. i have to clean the fingerprint area with a microfiber cloth and then it works only for 2-3 times.....this is really annoying...i have tried multiple times registering my finger...but doesn't seems to work.
Tried factory reset but still the problem persists.

Proximity sensor bug

After the update I'm having trouble with the proximity sensor. It stops suddenly. Usually when I put the smartphone in the pocket. It was perfect before 172 firmware. Anybody notice anything? Any tips? I have the EVRL29. I also made a factory reset.
Lord_Maumad said:
After the update I'm having trouble with the proximity sensor. It stops suddenly. Usually when I put the smartphone in the pocket. It was perfect before 172 firmware. Anybody notice anything? Any tips? I have the EVRL29. I also made a factory reset.
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Hey, you can use the APP that comes with your phone to check if the proximity sensor fails.
How to open it: HiCare-Service-Smart diagnosis-Auto
Good luck
Thanks, But everything's fine with the sensor as Hicare. I don't believe it's a hardware problem, but I don't know what I can do about the system.
Lord_Maumad said:
Thanks, But everything's fine with the sensor as Hicare. I don't believe it's a hardware problem, but I don't know what I can do about the system.
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Do you have a black screen when you are talking?
When the sensor is locked, no. Sometimes the screen turns black immediately when I get the phone call. That is, the sensor is locked. Passing the finger over the sensor a few times, it unlocks and goes back to work.
Having the same issue. I thought it was because of Drupe (am using it instead of default dialer). Weirdly, proximity sensor activates even before attending the call sometimes and am not able to do anything. Just let the call ring it out and then have to call back as even locking/unlocking doesnt work.
have upgraded to version 184 and the problem continues. I don't know what to do. Disappointment with Huawei
cashif said:
Having the same issue. I thought it was because of Drupe (am using it instead of default dialer). Weirdly, proximity sensor activates even before attending the call sometimes and am not able to do anything. Just let the call ring it out and then have to call back as even locking/unlocking doesnt work.
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Hi, did you solve the problem? I downgraded and it worked again, so I decided to upgrade and it stopped again
Lord_Maumad said:
Hi, did you solve the problem? I downgraded and it worked again, so I decided to upgrade and it stopped again
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Problem stopped after updating to latest firmware 184 version
Lord_Maumad said:
After the update I'm having trouble with the proximity sensor. It stops suddenly. Usually when I put the smartphone in the pocket. It was perfect before 172 firmware. Anybody notice anything? Any tips? I have the EVRL29. I also made a factory reset.
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Click to collapse
Are you using full cover tempered glass screen protector?
Unfortunately I'm not ?
I don't know if it is updated firmware bug or hardware failure. My friend's phone has this problem too, and even worse when dialing or listening to voice SMS in FB messenger, the screen was off until the voice finished. I thought it was full cover screen protector; however, it was not after I suggested him to take off the screen protector, and the problem still persisted. Anyway he told me there was not any problem before updating.
Lord_Maumad said:
Unfortunately I'm not
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Are you using full cover tempered glass screen protector?In addition, can you check whether the position of your sensor is clean.
I'm not, and it's clean. It works until I put it in my pocket, then it gets stuck.
Today I realized one thing, if I touch the screen where the sensor is for more than 2 seconds, it hangs. If I stay near, it works ?
Lord_Maumad said:
Today I realized one thing, if I touch the screen where the sensor is for more than 2 seconds, it hangs. If I stay near, it works ?
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My friend just sold his mate 20x with proximity sensor error and bought a new one with the same firmware version 9.0.0.184. The new one worked functionally with its proximity sensor. I think that his previous mate 20x had proximity sensor hardware's problem, not dead but not functional.
Ich have the same issue with a P30 Pro New Edition. I hope it's a hardware issue and the replacement unit will be fine.

Question fingerprint sensor doesn't work

i recently tested custom roms... and rooted my p6p but somehow the fingerprint reader doesb't sense my finger when it's in lockscreen and only work after i wake the phone up... anyone has ideas what's causing it?
Restarting your device can fix some minor issues like unstable Wi-Fi, a frozen program, or a faulty fingerprint sensor. So the best solution for your fingerprint sensor might be to reset it.
jack lamters said:
Restarting your device can fix some minor issues like unstable Wi-Fi, a frozen program, or a faulty fingerprint sensor. So the best solution for your fingerprint sensor might be to reset it.
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by resetting, you mean restarting my device? i tried... but still giving me issue,,,
godlyitem said:
i recently tested custom roms... and rooted my p6p but somehow the fingerprint reader doesb't sense my finger when it's in lockscreen and only work after i wake the phone up... anyone has ideas what's causing it?
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Since you are running a custom ROM, the best person to ask is the creator of that ROM. See if maybe other people running the ROM have the same issue. Since you are not running Stock and haven't even mentioned which ROM you use, it's hard to help you here in any way.
godlyitem said:
i recently tested custom roms... and rooted my p6p but somehow the fingerprint reader doesb't sense my finger when it's in lockscreen and only work after i wake the phone up... anyone has ideas what's causing it?
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I am not running custom rom but that fingerprint reader problem is on mine too and its sporadic. The reader would work fine after a reset/flash, days later it would bug out. I have to tap once or lift the phone to activate the screen for the reader to work. Rebooting the phone a few times would get it to work again but its random.
I've noticed on AOD the fingerprint reader doesn't respond while in a smartlock area and i have to press power to get to lockscreen then fpr works (or it shows me unlocked by smartlock depending if it's been 4 hours) . Can others confirm/rebut that theirs only does this in smartlock zones and not in the wild (or if you bt smartlock whether or not being connected causes this)
so i rooted and went back to stock OS. It didn't work in AOD. After several reboots, it started to work again..... this is crazy
godlyitem said:
so i rooted and went back to stock OS. It didn't work in AOD. After several reboots, it started to work again..... this is crazy
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Yeah, its a crapshoot if it will remain working the next time you restart.

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