Finger Print sensor - Redmi Note 8 Pro Questions & Answers

Me and my friend both bought redmi note 8 pro, mine is working fine but my friends phone, although its new is having a problem regarding finger print sensor.
All of a sudden the sensor stopped working and after a reboot the finger print setting also disappeared.
Any solution ?
I have tried solutions such as clearing cache and force stopping the finger print extension in apps
Kindly guide what should i do.

might be a faulty device

Foreal_Bruh said:
might be a faulty device
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Yes, after striking the sensor a few timea it started working, but after sometime it stopped again, now sending it for replacement.

Related

[Q] Proximity sensor problem(?)- can flashing a ROM solve it?

Hi,
I've searched high and wide for a solution (other than sending it back to Motofailure repair) and am failing at finding one so far. So I'm hoping I can get some help from here.
So, this is the situation: I make a call, screen instantly turns dark and will only light up again when I press on the area where the light (&) proximity sensor is.
I've already tried the following.
1.) Done a factory reset (3x) - with mem card, with reformatted mem card, w/o mem card.
2.) Clearing the dust on the earpiece hole using an air duster.
3.) There were times that I worked properly after I've uninstalled apps but the issue came about again after a couple of tries.
So, now I'm thinking that I might want to root my Defy to set things right. I'm quite familiar with RSD Lite as I've used it before on my RAZR2 V8.
A bit of background: I bought my Defy on pre-order so this is one of the earlier models. I had the earpiece problem and sent it to Motofailure repair and the whole process took a month (32 days to be exact - long story. I'm avoiding having to send this PoS back. They updated the software when I got it back.
As far as I can recall, I didn't had this problem before the earpiece problem. And I'm thinking it might be a software problem hence I'm now looking at a solution by rooting and flashing the ROM with an original one.
I have no way of finding out (as far as I know) whether this is a hardware problem (hence hesitating to have it sent back to Motofailure repair).
What I've also observed is that when there is direct bright light, it works normally but when its dim, then the problem appears.
I don't have any screen protectors, just so you know.
Can anyone advise me on what to do?
During a call proximity sensor is activated to turn off the screen at the moment it detects proximity and asumes you are using the phone against your hear, so it turns off screen to save energy.
I think you might have some app installed in your phone, using and reversing the sensor status so it detects proximity when there isnt, and viceversa
You might want to try removing apps using that sensor and see if problem gets solved, there is also an app in the masket called sanity; which makes extensive use of proximity sensor for vaqrious things, and have an option to reverse proximity sensor, you might want to try it and see if problem gets fixed.
You might try this things: remove apps using proximity sensor, test phone. Deactivate in pocket detection; test phone, and install sainity, test phone, install a new rom?
If speaker is bigger than original one, or there was an assembly error, light/proximity sensor won't fit into right place.
I've seen such reports and you can't do anything unless you open up thing and check the problem, but you haven't seen the right assembly so you may not know the right place.
Are you using any screen protector? I know some screen protectors cause this problem.
Edit: Nevermind, I see that you're not using any.
how to calibrate the proximity sensor?
My new defy 's proximity sensor seems cannot work correctly,when i making a call ,the screen shut off immediately,and the screen could not light on by any key,but when i touch the proximity sensor with my finger,the screen may be light on!
so i download a app to test the proximity sensor which name's"Android sensor data",this app fingue out the state of proximity sensor,"near" or "far",sometimes I just passing my finger over the proximity sensor, the reading will show 'near' and then remain 'near' even when my finger is moved away!
Can anyone else help me to calibrate the proximity sensor?google told me some android phone can do this ,such as htc, zte etc.
goole tell me android phone have some standard testcode,such as *#*#4636#*#* can show the phone statue,it works correstly in Defy,*#*#0588#*#* test the proximity sensor ,but it doesn't work in defy!!!
I don't think this issue could be solved trough software tweaks. Chances are this is a hardware problem. Maybe you should contact the Motorola support.
try disabling in-pocket detection
have the same problem. it started 2 days ago. Im using CM7. It just turns dark and wont wake up unless someone else is calling me. Just got it tested, and when i cover the sensor with my finger it says 0cm distance for long time.
I've tried data wipe and similar, but nothing helped so far.
EDIT: I've just tried wiping the place where proximity sensor is with some soft cloth and alcohol and for the time being, it works. O.O
Could Wipe Dalvik help?

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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Click to collapse
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
Click to expand...
Click to collapse
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.

Fingerprint addition issues

Anyone having issues adding their fingerprints? I get most of the way through and it dumps me back out to the menu. I tried about 15 times and same result every time. I feel like it is registering a touch somewhere on the screen or buttons or something when it dumps me back and no matter how I try to touch the scanner it does the same thing. I have never had issues like this with the last 4 galaxy fingerprint scanners. Anyone else? Ideas?
I have this issue on the note 7 finger print sensor. Whenever i place my finger at the lock screen, it does nothing and without any error message. i can only unlock it via pattern. Tried rebooting the phone and it is still the same. I even delete off the finger print and re-add the finger print but it is still the same.
Not sure if anyone else have this issue and how do we solve this?
travistyofjustice said:
Anyone having issues adding their fingerprints? I get most of the way through and it dumps me back out to the menu. I tried about 15 times and same result every time. I feel like it is registering a touch somewhere on the screen or buttons or something when it dumps me back and no matter how I try to touch the scanner it does the same thing. I have never had issues like this with the last 4 galaxy fingerprint scanners. Anyone else? Ideas?
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Click to collapse
Seems like a defective unit. On my n930f works even better than on my already sold s7edge.
Sent from my SM-N920C using XDA-Developers mobile app

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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Click to collapse
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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Click to collapse
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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Click to collapse
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.
Click to expand...
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.

Fingerprint sensor problem

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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