I was cleaning my screen with a micro fibre cloth and decided to test the reader with the cloth covering the sensor, it did somehow unlock the phone, but not directly it came up with the unlocked padlock and swipe up to desktop screen.
Pretty strange.
Face unlock probably?
Related
As soon as I unlocked the phone by swiping up, it immediately locks itself again. I have a tempered glass screen that is chipped near the light sensor, but it is far from the sensor and as far as I can tel it's not directly touching the sensor. It's been cracked for a few days and just started doing this today. I have Chroma installed. Does this sound like the glass is interfering?
Figured it out. Just put a steelie on it today. I had it near the top of the phone below the camera. I moved the steelie lower and it works fine now. Apparently having something magnetic hear that part of the phone puts it to sleep
Does any have problem with Face ID after applying the screen protector?
Because I tried three from different companies and they have the same problem which is (face Id becomes dumb and can't recognise my face easily until I remove the glassy screen protector)
I've got Xiaomi Mi8 EE and no problem with Face ID with WOZINSKY tempered glass protector.
Never had a problem with FaceID with any scrren protector.
I had 5 and now i use it without - all have problems. All with holes were not working good with the face unlock. Search with whole glass without holes(only for the speaker).
Hello people
Also, does any of you have a problem with the fingerprint reader response when using night reading (red filter mode for less eye fatigue).
By day (auto contrast set - stock) and the reader responds without problems.
However, when it gets dark and the phone starts to use night reading, the reader is often unresponsive.
Of the 4 scanned images, it usually takes only one, so I have to put my finger the same way to unlock the phone.
I use protective glass (9H 2,5D curved, tempered by Sigisi).
But I think there will be no problem, because the reader reacts with the glass without problems during the day.
Thanks for the reaction.
I guess that the night mode plus the protective glass is a bad combination
Did you set the fingerprint after applying the glass or before?
With the night reader mode it shouldn't be any problem. The phone automatically, when it detects a finger on the sensor, disables All screen filters. If you notice, when the blue light of the sensor appears, you'll notice that some colors lower it's contrast for a more precise scan. And with the glass, I have a non branded 5D glass and it works perfect. In the only situation that fails reading my finger, it's when I have my fingers wet (by the swimming pool) and wrinkled, but I think that it happens with every Fingerprint scanner. If the scanner works without the glass. The problem is the glass. If not. You want the warranty to remain valid
After aplying
Im thinking about buying this phone, but what worries me if fingerprint scanner works well with protective glass?
I'm using generic tempered glass from the start. Even registering my fingerprints with glass on. No problem so far. Just little advised,I'm using only my right thumb to unlock,and what I did is I repeatedly registered the fingerprint while I'm holding the phone so it will be more accurate.
By the way. I' also set my phone to be on reading mode at night.so far no problem with it. I'm on miui 11.3.3,stable official global rom.
axlina said:
Im thinking about buying this phone, but what worries me if fingerprint scanner works well with protective glass?
Click to expand...
Click to collapse
Just use a glass one and it should be fine, at least for me its 100%
This post is just for reference, in case anyone needs pictures of original parts and a small guide on how to replace the fingerprint sensor.
This video (not mine) shows the process as well, on a Redmi 4 (non-X), except you don't need a screwdriver for the 4X. And there's no fp sensor test in the 4X MIUI engineer test app.
I recently bought a Redmi 4X with a faulty fingerprint sensor.
I noticed in both MIUI11 and LineageOS:
- I was not asked to add a fingerprint during initial setup
- There are no fingerprint settings for lockscreen security (only PIN, pattern, swipe). If you try to search in settings for "finger" and tap on the result, the page will be empty/blank.
I tried some software tricks like deleting files, but that did not help here. On the phone itself, the fp sensor had a tiny dent/hole in it (can be seen on the pictures), less than 1mm in size, which revealed a bit of silver colour under the black surface. Looks like it hit some sharp object. I'm not entirely sure if that caused it to fail though.
So I bought a replacement (less than $10, pictures attached). After opening the phone with plastic tools, removing the old fp sensor ribbon cable from the motherboard, just push the old sensor out of the case through the hole with moderate force. It is glued in place with some sort of foam, clean it off with some tweezers and isoprop alcohol. I installed the new sensor with some B-7000 glue (if you make any mistakes with B-7000, just wipe it off before it dries with a qtip and isoprop alcohol and try again).
My replacement seems to be the common one sold on Aliexpress and elsewhere, it works fine and appears to be fpc (persist.sys.fp.goodix is 0).
Text on original Xiaomi fp sensor ribbon cable (ribbon cable has a black colour):
F3208FD RA0
F 171501
Text on replacement (ribbon cable has copper/bronze colour):
[icon]-film 0251-00 V4HX-1718
I have registered only my right thumb on the x50 pro to unlock it. On quite a number of occasions I've been able to unlock it with my left thumb. I've also had my girlfriend unlock it with her thumb which is significantly smaller than mine.
Has anyone else had this?
UPDATE
This is the face unlock. The front camera is so wide that even when its resting on its back it can sometimes see your face.
LOL, I had the same thing happening on my Xiaomi phone, I was ready to throw away the phone in the trash when I realised it was the face unlock doing it's job before the fingerprint reader....