fingerprint scanner (mido) - Xiaomi Redmi Note 4 Questions & Answers

I would like to know, which sensor do I have inside my redmi note 4x. How can I check it?
I think that "goodix" is inside. If I'm right, I would like to replace it for "fpc" sensor, but I've no idea how do I know, if the new sensor is really a "fpc" sensor.
Also, do I need to reinstall the "rom" to apply the changes of new sensor?
And are there any visible differences between those sensors (sometnhig what can i see when i look on them?)
later i want to install oreo rom and i want to get my fingerprint sensor ready (i have two sensors but i dont know if there are fps or goodix)
someone can recomend where i can buy fpc sensor

Short answer, no you can't change the sensor that came default. Its a hardware, soldered to the main board itself. You could try to reassemble your phone and try to get to the physical chip and change it, but that could be more hassle than its worth, and imho a really stupid thing to do.

coldplug said:
Short answer, no you can't change the sensor that came default. Its a hardware, soldered to the main board itself. You could try to reassemble your phone and try to get to the physical chip and change it, but that could be more hassle than its worth, and imho a really stupid thing to do.
Click to expand...
Click to collapse
Stop trolling. You can easily change the fingerprint module without problem. It's connected with a flex cable, not soldered at all to the main board.
plakonn said:
I would like to know, which sensor do I have inside my redmi note 4x. How can I check it?
I think that "goodix" is inside. If I'm right, I would like to replace it for "fpc" sensor, but I've no idea how do I know, if the new sensor is really a "fpc" sensor.
Also, do I need to reinstall the "rom" to apply the changes of new sensor?
And are there any visible differences between those sensors (sometnhig what can i see when i look on them?)
later i want to install oreo rom and i want to get my fingerprint sensor ready (i have two sensors but i dont know if there are fps or goodix)
someone can recomend where i can buy fpc sensor
Click to expand...
Click to collapse
You can check yout fingerprint sensor with the service menu
Go to dialing screen, enter the *#*#6484#*#*
And the first test tells what screen, fingerprint sensor, camera module etc the phone is equipped with.
Give it at a try

plakonn said:
I would like to know, which sensor do I have inside my redmi note 4x. How can I check it?
I think that "goodix" is inside. If I'm right, I would like to replace it for "fpc" sensor, but I've no idea how do I know, if the new sensor is really a "fpc" sensor.
Also, do I need to reinstall the "rom" to apply the changes of new sensor?
And are there any visible differences between those sensors (sometnhig what can i see when i look on them?)
later i want to install oreo rom and i want to get my fingerprint sensor ready (i have two sensors but i dont know if there are fps or goodix)
someone can recomend where i can buy fpc sensor
Click to expand...
Click to collapse
Wanna know what sensor you've got?
Go to terminal Emulator and type this
getprop | grep goodix
Show me the output. I'll tell you which sensor you got

Related

[Q] Probably proximity sensor damage

Hi my problem is strange. After a fall mi phone HTC GRATIA is similar HTC Aria have a problem during the call. Sometimes the display became black similar a stand by and not answer to the all impulse. If i want stop the call i have to do remove the battery.....
Have you any help for me ?
thank you
I've got a similar problem. I've replaced my digitizer and done everything by the instructions I've found. However the proximity sensor doesn't work and disable the screen when calls are answered.
I've got the rubber gasket on the light sensor, didn't lost it, and the light sensor works OK. I've tried prying very gently in between the digitizer and the housing, and while I do that sometimes the proximity sensor will show a value of 3.5in, and not 0 as always. I'm using AndroSensor.
I don't mind disassembling the phone again, but I don't know what I need to fix it.
I've searched all the forum posts about it, but either people disabled it somehow, and others just say they fix it but didn't mention how.
Any help on this?
CaptainMaki said:
I've got a similar problem. I've replaced my digitizer and done everything by the instructions I've found. However the proximity sensor doesn't work and disable the screen when calls are answered.
I've got the rubber gasket on the light sensor, didn't lost it, and the light sensor works OK. I've tried prying very gently in between the digitizer and the housing, and while I do that sometimes the proximity sensor will show a value of 3.5in, and not 0 as always. I'm using AndroSensor.
I don't mind disassembling the phone again, but I don't know what I need to fix it.
I've searched all the forum posts about it, but either people disabled it somehow, and others just say they fix it but didn't mention how.
Any help on this?
Click to expand...
Click to collapse
You need to get the light sensor, gasket, and the small window in the digitizer all lined up perfectly so that the light sensor is not being blocked by anything. Not as easy as it sounds.
thanks for the explanation, but is the best way to do this?
and why the light sensor shouldn't be blocked? it seems by AndroSensor that it works fine, the problem is with the proximity sensor.
These phones where manufactured by the thousands per day in some factory, there sure is a way to assemble them precisely somehow.
CaptainMaki said:
why the light sensor shouldn't be blocked?
Click to expand...
Click to collapse
If it is blocked, then it will not be able to sense anything (It's like you (the light sensor in this case) are trying to through a wall (whatever's blocking it)).
CaptainMaki said:
These phones where manufactured by the thousands per day in some factory, there sure is a way to assemble them precisely somehow.
Click to expand...
Click to collapse
Special machines used to place them accurately.
I meant that the light sensor is "blocked" by the rubber gasket and seems to works fine.
by the way, as far as I know, most electronics are assembled by hand. laptops, iphones and ipads are, so I don't think that Aria is any different.
If anyone has any tips on how to do this, since I'm sure I someone has managed to replace the digitizer on this phone? how do they do this in repair shops or AT&T store?
CaptainMaki said:
I meant that the light sensor is "blocked" by the rubber gasket and seems to works fine.
by the way, as far as I know, most electronics are assembled by hand. laptops, iphones and ipads are, so I don't think that Aria is any different.
If anyone has any tips on how to do this, since I'm sure I someone has managed to replace the digitizer on this phone? how do they do this in repair shops or AT&T store?
Click to expand...
Click to collapse
The ambient light sensor and the proximity sensor are two separate things, though they are right next to each other on the Aria. The proximity sensor is MUCH more sensitive to being precisely aligned.
I incorrectly used the term "light sensor" in my earlier post. The proximity sensor, NOT the ambient light sensor, is responsible for turning the screen off during calls.
drumist said:
I incorrectly used the term "light sensor" in my earlier post. The proximity sensor, NOT the ambient light sensor
Click to expand...
Click to collapse
That's what I assumed you were talking about.
As I've said the proximity sensor is the right sensor and the ambient light is the left sensor that is covered with the rubber gasket.
The light sensor works perfectly as I've said. In AndroSensor at least it jumps between 33 LUX when covered and 77 LUX and 220 LUX when placed directly under a desk lamp.
But the proximity sensor doesn't seem to respond at all. What perfectly aligned means, that the sensor is right below the "hole" in the digitizer plastic? if I place the digitizer and it falls into the place, how come it isn't aligned? it's not like the digitizer has where to move in the frame.
CaptainMaki said:
The light sensor works perfectly as I've said. In AndroSensor at least it jumps between 33 LUX when covered and 77 LUX and 220 LUX when placed directly under a desk lamp.
Click to expand...
Click to collapse
I have two Arias and they both max out at 698 lux. If you can't get it to go above 220, it might be partially obstructed.
But the proximity sensor doesn't seem to respond at all. What perfectly aligned means, that the sensor is right below the "hole" in the digitizer plastic? if I place the digitizer and it falls into the place, how come it isn't aligned? it's not like the digitizer has where to move in the frame.
Click to expand...
Click to collapse
Do you notice a gap between the LCD and digitizer that is larger than it was from the factory? I wonder if it might just be related to the digitizer sitting too far from the proximity sensor. If you press down on the top right corner of the digitizer while in a call (without covering the sensor itself), will the screen turn back on?
Possibly unrelated, but similar.
I have an identical issue with the DroidX.
It needs a "gasket" over its proximity "light source" to keep light from reaching the proximity light sensor when there is nothing in front to reflect it back.
Looks like the light source had a rubber hood over it with a pinhole directed straight out, away from the sensor adjacent to it. Thus keeping stray light from triggering the sensor.
AAARGH. To have that little rubber piece.
Erbid
after replacing another screen and this time I've done it right, this is what I've learned.
I've assembled the phone with androsensor turned on and tested the sensors all the time. It seems that they should be perfectly clean (some air spray will do just fine), perfectly aligned with the holes in the digitizer and don't have to much distance between the digitizer and the sensors.
It's seems like a hassle but actually it's not, since if you put the right tape and put the keep it all clean, it can work with no problems at all. Make sure you test everything before you close the phone completely.

Proximity Sensor

In the app Sensor List there is listed a proximity sensor, however I have only heard of people saying the Prime has no such sensor.
The sensor is listed as: Intersil isl29018 Proximity sensor
It doesn't seem like the app can get any readings from the sensor though. Is my sensor broken or what?
Dont see why the TP would need a proximity sensor, its not like your gunna be putting your face on it !
The app is probs just detecting the light sensor as the proximity sensor or similar ..
SirGarry said:
In the app Sensor List there is listed a proximity sensor, however I have only heard of people saying the Prime has no such sensor.
The sensor is listed as: Intersil isl29018 Proximity sensor
It doesn't seem like the app can get any readings from the sensor though. Is my sensor broken or what?
Click to expand...
Click to collapse
The TP has no proximity sensor.
chamberc said:
The TP has no proximity sensor.
Click to expand...
Click to collapse
Then how do you explain the listing of "Intersil isl29018 Proximity sensor"? Other apps list the same thing. Try it.
Elixir 2 lists a proximity sensor as well, and actually shows it as active and drawing power. But, the app doesn't show it as responding. So, who knows? Maybe proximity sensor functionality is part of a multipurpose sensor, only there's no component to actually take the required readings?
Actually, yes, that's my guess. That part number is a light and proximity sensor, and there's likely just a component to enabling the light sensor part.
http://www.intersil.com/products/deviceinfo.asp?pn=ISL29018
SirGarry said:
Then how do you explain the listing of "Intersil isl29018 Proximity sensor"? Other apps list the same thing. Try it.
Click to expand...
Click to collapse
Already have tried it. The TP doesn't have a proximity sensor.
chamberc said:
Already have tried it. The TP doesn't have a proximity sensor.
Click to expand...
Click to collapse
Actually, you're wrong. The Prime has a proximity sensor--only it's a light and proximity sensor (check out my link above). The proximity sensor functionality simply isn't enabled in the Prime.
wynand32 said:
Actually, you're wrong. The Prime has a proximity sensor--only it's a light and proximity sensor (check out my link above). The proximity sensor functionality simply isn't enabled in the Prime.
Click to expand...
Click to collapse
Wrong. There is a light sensor, but it isn't a proximity sensor. Check the FCC materials.
actually i think the prima has one.
I think it is inside the dock. Because androsensor (app from the market) gives me an error on this sensor when the dock is not pluged in.
When i plug my tablet in the sensor says no signal.
Can be a bug, but mayby the dock uses the sensor in the hinge to see if it's open or closed?
There has to be the sensor its used when you close the tablet when plugged into the dock that's how it now to shut the screen off
tylermaciaszek said:
There has to be the sensor its used when you close the tablet when plugged into the dock that's how it now to shut the screen off
Click to expand...
Click to collapse
This could be the case, that it only activates it when coupled with the dock. However, pretty sure I haven't heard of people accidentally putting it to sleep using its touch-screen while docked, so I doubt this is the case; more likely there's a mechanical switch on the dock that let's the Prime know when to turn the screen off.
As linked above, the proximity sensor is one and the same with your light sensor (pretty sure it's like this on my phone too... will have to have a look just to be sure). We just have no need for it to be used: that being said, I wonder if dev's can unlock it just for the hell of it
chamberc said:
Already have tried it. The TP doesn't have a proximity sensor.
Click to expand...
Click to collapse
wynand32 said:
Actually, you're wrong. The Prime has a proximity sensor--only it's a light and proximity sensor (check out my link above). The proximity sensor functionality simply isn't enabled in the Prime.
Click to expand...
Click to collapse
chamberc said:
Wrong. There is a light sensor, but it isn't a proximity sensor. Check the FCC materials.
Click to expand...
Click to collapse
Selhati said:
actually i think the prima has one.
I think it is inside the dock. Because androsensor (app from the market) gives me an error on this sensor when the dock is not pluged in.
When i plug my tablet in the sensor says no signal.
Can be a bug, but mayby the dock uses the sensor in the hinge to see if it's open or closed?
Click to expand...
Click to collapse
all wrong. the Prime doesnt exist.
/argument
Easy test
buxtahuda said:
This could be the case, that it only activates it when coupled with the dock. However, pretty sure I haven't heard of people accidentally putting it to sleep using its touch-screen while docked, so I doubt this is the case; more likely there's a mechanical switch on the dock that let's the Prime know when to turn the screen off.
As linked above, the proximity sensor is one and the same with your light sensor (pretty sure it's like this on my phone too... will have to have a look just to be sure). We just have no need for it to be used: that being said, I wonder if dev's can unlock it just for the hell of it
Click to expand...
Click to collapse
Easy to prove/disprove. O have tried it when I 1st got the Prime. Put it in the dock. Close it most of the way, leaving it open about an inch or so. Put your finger over the light sensor (about 2 inches to the left of the camera) It does NOT put it in sleep mode. Close it the rest of the way. It goes to sleep. Shine a bright halogen light in to the area at top of screen, after just cracking the tablet and doc apart a fraction. It does NOT come out of sleep. There seems to be a mechanical switch in the hinge. Which I am not very thrilled about. Too easy to break, the light sensor would probably have been more durable. Another great engineering decision by Asus, going for the "Persistent Perfection" or a reasonable workaround to simulate it, LOL!
SmartAs$Phone said:
Easy to prove/disprove. O have tried it when I 1st got the Prime. Put it in the dock. Close it most of the way, leaving it open about an inch or so. Put your finger over the light sensor (about 2 inches to the left of the camera) It does NOT put it in sleep mode. Close it the rest of the way. It goes to sleep. Shine a bright halogen light in to the area at top of screen, after just cracking the tablet and doc apart a fraction. It does NOT come out of sleep. There seems to be a mechanical switch in the hinge. Which I am not very thrilled about. Too easy to break, the light sensor would probably have been more durable. Another great engineering decision by Asus, going for the "Persistent Perfection" or a reasonable workaround to simulate it, LOL!
Click to expand...
Click to collapse
while the light sensor would have been more durable, it would also prevent deep sleep mode as the OS would have to constantly read the state of the light sensor for keeping screen off and for turning it on immediately upon opening docked tablet.
Magnetic
I think the Prime has a magnetic open/close detection system.
In a hardware thread someone observed that the Prime will switch off the screen if a magnet is placed in the upper left quadrant. And since the dock is quite magnetic right of the touch pad it seems to fit. I never tried it with a magnet myself though.
SirGarry said:
Then how do you explain the listing of "Intersil isl29018 Proximity sensor"? Other apps list the same thing. Try it.
Click to expand...
Click to collapse
There use to be a GPS sensor listed in the specifications too. I'm guessing if it doesn't work - it will just mysteriously disappear.
SmartAs$Phone said:
Easy to prove/disprove. O have tried it when I 1st got the Prime. Put it in the dock. Close it most of the way, leaving it open about an inch or so. Put your finger over the light sensor (about 2 inches to the left of the camera) It does NOT put it in sleep mode. Close it the rest of the way. It goes to sleep. Shine a bright halogen light in to the area at top of screen, after just cracking the tablet and doc apart a fraction. It does NOT come out of sleep. There seems to be a mechanical switch in the hinge. Which I am not very thrilled about. Too easy to break, the light sensor would probably have been more durable. Another great engineering decision by Asus, going for the "Persistent Perfection" or a reasonable workaround to simulate it, LOL!
Click to expand...
Click to collapse
Eh, I think I'd hate using a proximity sensor for this. The explanations about magnets is interesting, and definitely not an easily-broken method.
Really though, I plan to use my touch screen even when docked and would be pissed trying to swype/tap/play anything and accidentally send the tablet to sleep.
If there is no light sensor how do you explain the "auto" brightness? It has to be sensing something from somewhere. Unless we're talking about something else here.... cuz i kinda just skimmed through the posts..... >_>

[Q] proximity sensor non existent?

Hello,it seems there is no Q&A forum for this device, so here is my doubt:
Although the tech manual for the xperia S from the sony website report a proximity sensor, I fail to find one on my phone.
There seems to be a black oval spot on the glass next to the light sensor as if some sort of sticker can be removed to install the sensor.
The light sensor seems to work, since I've seen the screen go darker and brighter, but when I'm in a call and put the phone in my ear the screen wont shut off like in my old SGS nor will it turn on when I move the phone away from my face.
are your phones like mine? or is mine a defective unit?
I guess ur device has something wrong with it.
By the way; did u place a screen protector?? Coz if u did that may be the problem!
I think the light and proximity sensor are the same.
There is something wrong with your phone,maybe you should try to flash a new firmware.
Sent from my LT26i using Tapatalk 2
grained said:
Hello,it seems there is no Q&A forum for this device, so here is my doubt:
Although the tech manual for the xperia S from the sony website report a proximity sensor, I fail to find one on my phone.
There seems to be a black oval spot on the glass next to the light sensor as if some sort of sticker can be removed to install the sensor.
The light sensor seems to work, since I've seen the screen go darker and brighter, but when I'm in a call and put the phone in my ear the screen wont shut off like in my old SGS nor will it turn on when I move the phone away from my face.
are your phones like mine? or is mine a defective unit?
Click to expand...
Click to collapse
Hi,
Mine works fine...
Do this:
1>Go to dialpad and type *#*#7378423#*#* (*#*#SERVICE#*#*)
2>A menu pops up in that u will see service tests select that
3>Then scroll down and select Proximity Switch
4>Initially it will display as OFF. Now u place your finger or hand on the Proximity Sensor, then the value of Proximity Switch on the screen will change to ON.
If this is working then the sensor is just fine u need to update the firmware else u need to go and replace the piece IMO though.
Thank you all for the feedback.
I used the service menu to check the sensors ...
indeed the proximity sensor is always off, even when I put my finger on it, it seems someone forgot to remove the black paint from behind the glass, but I will update it anyway to make sure before returning it.
grained said:
Thank you all for the feedback.
I used the service menu to check the sensors ...
indeed the proximity sensor is always off, even when I put my finger on it, it seems someone forgot to remove the black paint from behind the glass, but I will update it anyway to make sure before returning it.
Click to expand...
Click to collapse
sensor is IR, so darkened window is normal for it. but if it have always closed windows - than its status must be always ON. so, most likely you have faulty sensor (or bug in firmware)
goodwin_c said:
sensor is IR, so darkened window is normal for it. but if it have always closed windows - than its status must be always ON. so, most likely you have faulty sensor (or bug in firmware)
Click to expand...
Click to collapse
Hi,
Exactly it should be showing status as ON if it's covered replace the piece as soon as possible
shoz_on4u said:
Hi,
Exactly it should be showing status as ON if it's covered replace the piece as soon as possible
Click to expand...
Click to collapse
If it was covered by the glass/ cover it would show OFF because the glass doesn't radiate heat like your body does.
Sent from the Delta Quadrant using a transwarp conduit.
Pezo said:
If it was covered by the glass/ cover it would show OFF because the glass doesn't radiate heat like your body does.
Sent from the Delta Quadrant using a transwarp conduit.
Click to expand...
Click to collapse
Proximity sensor on phones does not react to heat. It have simple IR transmitter, which emits a beam, and IR sensor, which react on reflected beam.
goodwin_c said:
Proximity sensor on phones does not react to heat. It have simple IR transmitter, which emits a beam, and IR sensor, which react on reflected beam.
Click to expand...
Click to collapse
You are right, just tested it and it seems to be a reflective sensor.
thanks for the tips, it was indeed a faulty sensor and they gave me a new phone right away .
I hope I don't get any more problems like a yellow tint :X (knock on wood with fingers crossed)

Problem with Proximity Sensor

I've been having some issues with my proximity sensor.
So, I installed stock ROM from Samsung...enter the TEST MENU...and hit the SENSOR.
For what I've read, if I covered the sensor, the screen should go green and the device should vibrate.
However, my screen is already green as soon as I press the SENSOR test key and vibrates without stopping at all right from the start.
The results shown is....UNcovered: 17 covered: 251
Is this a faulty sensor? Can I calibrate it?
Is there any solution?
PS: Is there any cooked rom with the ability to turn down the ability to turn off the screen when making a call, such as it is on stock rom's?
Are you using a screen protector or a protective case that can possibly affect the sensor? If yes, try removing whatever you can remove. See if the problem persists.
I remember buying a certain protective case from Otterbox, I think it was commuter, that can trigger or affect the proximity sensor because the cut of the silicon case was not big enough. Good thing I was able to return and replace it with something else.
Dust or dirt can also affect the sensor so try checking that.
Hi there.
First of all, thanks for your answer.
I don't use screen protector or any kind case.
My S2 is quite good, without marks or scratches of any kind.
Can't tell if there is any dust inside....
Any thoughts?
plantunes said:
Hi there.
First of all, thanks for your answer.
I don't use screen protector or any kind case.
My S2 is quite good, without marks or scratches of any kind.
Can't tell if there is any dust inside....
Any thoughts?
Click to expand...
Click to collapse
You can try the following:
- Proximity Sensor Calibration
- Using a vacuum, try to vacuum the upper part of S2.
- Use an adhesive tape once or twice to clean the sensor and front camera area.
- Remove the battery for 2-5 mins.
- If you have Viber, uninstall it then check (though I think they got this fixed since late of 2012).
- Try another battery.
- Flash a new ROM (some ROMs have it, some don't, but look for Call Settings (by accessing phone icon) > 'Always use Proximity' then uncheck the option).
If problem still persists, then it's possible that it's indeed a faulty sensor (though it seems not the case at the moment). It's up to you if you want to send it for repair/replacement or you can disable it if you're phone is rooted.
Download Android Sensor Box and Hardware Disabler
Run Android Sensor Box.
Choose proximity sensor.
Look for the square icon near the bottom left of the screen, press and remember the proximity sensor's driver name.
Run Hardware Disabler.
Scan or whatever the option is there.
Look for the proximity sensor's driver name then select.
Reboot.
A confirmation will pop asking to disable the Sensor, select yes.
For ROM suggestions (with an option to disable proximity sensor when calling), you should probably asked around on some ROM non-development topics if they have it. Also, check if the ROM is stable to prevent more problems.

LG V30+: Fingerprint Sensor Component Not Passing Hardware Test

Got my screen replaced this afternoon.
When I recieved my fixed phone, my fingerprint sensor wasn't programmed.
I went to the Security Settings and went to turn it back on, but it wasn't showing an option for a Fingerprint to unlock it.
I went to the Smart Cleaning Extension, optimized my phone and then went to test the hardware and every harswarw passed except the Fingerprint Sensor.
Quick Help didn't help at all.
I dont know what to do.
WitchyBiscuits said:
Got my screen replaced this afternoon.
When I recieved my fixed phone, my fingerprint sensor wasn't programmed.
I went to the Security Settings and went to turn it back on, but it wasn't showing an option for a Fingerprint to unlock it.
I went to the Smart Cleaning Extension, optimized my phone and then went to test the hardware and every harswarw passed except the Fingerprint Sensor.
Quick Help didn't help at all.
I dont know what to do.
Click to expand...
Click to collapse
Have you resolved your fingerprint problem?
I have a slightly different fingerprint issue. The V30 T-Mobile phone I purchased had a cracked back cover. So I replaced it with a new one following in detail the repair videos on google. After I put it together, the fingerprint option disappeared. Has anyone experienced this? Any resolution?
Thank you.
My LG V30+ fingerprint sensor quit working after I replaced the wide angle camera. It disappeared from the software menu and failed the hardware test. I replaced the fingerprint sensor with a new one without success. After examining the fingerprint sensor connectors on the motherboard with a 10x eye loupe (from Harb. Frieg.), I discovered that I had damaged one of the connectors when I removed the mid-board and main-board. The little gold connectors are spring loaded and circled with super thin aluminum looking strips. They are extremely fragile. One of the strips was bent down, and when I tried to bend it back, it broke off and fell on the table. It was so small I could barely feel it between my fingers. I suspect the fingerprint sensor is failing the hardware test because the connectors on the mainboard are damaged. I also suspect that the reason the software options are missing is that the system fails to detect a fingerprint sensor during the boot process and therefore does not load the fingerprint software options.
spotty357 said:
My LG V30+ fingerprint sensor quit working after I replaced the wide angle camera. It disappeared from the software menu and failed the hardware test. I replaced the fingerprint sensor with a new one without success. After examining the fingerprint sensor connectors on the motherboard with a 10x eye loupe (from Harb. Frieg.), I discovered that I had damaged one of the connectors when I removed the mid-board and main-board. The little gold connectors are spring loaded and circled with super thin aluminum looking strips. They are extremely fragile. One of the strips was bent down, and when I tried to bend it back, it broke off and fell on the table. It was so small I could barely feel it between my fingers. I suspect the fingerprint sensor is failing the hardware test because the connectors on the mainboard are damaged. I also suspect that the reason the software options are missing is that the system fails to detect a fingerprint sensor during the boot process and therefore does not load the fingerprint software options.
Click to expand...
Click to collapse
I'm curious to know if you were able to fix this issue after discovering the problem or if it is a lost cause. I'm having the same problem (no fingerprint option) after having someone else replace my screen and back glass. I'm not sure what else caused it or what to do about it.
I also got the same issue. My phone came back from the shop with heavily bent pins. Though I was able to bend most of them back (they're actually quite flexible, won't break easily as long as you're careful), one just won't return to its original state. It sits slightly lower than other pins and takes less force to compress.
Anyway it still works if I press on the connector. So if you're facing the same issue, try pressing the area to the lower right of the sensor whenever you need to use the sensor. If the phone detects sensor failure it won't work until next unlock.

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