Fingerprint sensor question - Xiaomi Mi CC9 / Mi 9 Lite Questions & Answers

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?
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Just use a glass one and it should be fine, at least for me its 100%

Related

[Q] screen protector question

I have experimented with various screen protectors on the Moto X. The one that I have on now covers the left side portion by the ear speaker. I have also seen screen protectors that purposely have this area cut out of the screen protector. I believe that this is where the light sensor is. I have been trying this screen protector out for a couple days (it is a anti-glare kind and is opaque) I have noticed that the active notifications don't come on as much...however, this may all be in my head. Curious if anyone else had tested this. See attached picture.
The screen protector I used ( Xtreme guard) has an extra area cut out to the left of the speaker, i guess for the proximity/light sensors..
and I don't have any issues with active notifications.. maybe you can cut it out?
That is the proximity / light sensor. Play with it when you're in a call - cover it up with your finger, and the screen goes off, remove your finger, and the screen comes back on. That's how your phone knows it's up to your face and to turn the screen off so you don't accidentally face dial. Some screen protectors don't affect it, others seem to. I don't doubt that your active notifications are funny if that piece is covered up. I had a tempered glass protector on that covered it. I had some issues with the screen not coming on when I took my phone away from the face to end the call. Sometimes active display would randomly turn on when the phone was sitting still on my desk. After I switched to a different brand that didn't cover it up, my problems went away.
Thank you for the info. I had a feeling that there was something up because it was acting a little random after putting that protector on. I don't think all companies really test their accessories on the phones they make them for...other than that they fit okay but not if they affect performance. Those test would take too much time. Funny thing is I got them from a Sprint store and they were $20 for two :/ . I found some, actually the exact one's Moto's sight selling, on Amazon for around six dollars something and they have a space cut out for that area.

proximity sensor issues? att varient

Anyone notice their proximity sensor is very flaky?
The screen will not shut off when I close my wallet cover over it. It will shut off when I start talking on the phone, but then will not "wake" when I move it away to hang up. I actually couldnt find anyway to wake it up so i just waited until the other side hung up (it was a recorded msg).
Any ideas? I may just shut off the proximity sensor and wait till I can swap it in store. Of course this was right after i installed a tempered glass screen .... would that impact it at all??thx!
http://forum.xda-developers.com/showthread.php?t=2922645
It seems that certain brands of tempered glass screen protectors are causing the same issue that you describe.
k2buckley said:
http://forum.xda-developers.com/showthread.php?t=2922645
It seems that certain brands of tempered glass screen protectors are causing the same issue that you describe.
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Click to collapse
thanks. mine was from extremeguard. i removed it. wait and see until the next person calls me. i contacted ATT and they said i have 11 days to return it (no exchanges available), and to try a master reset first
didnt seem to work after moving the glass. did a full reset and now it works....
ill try the glass again tomrrow and see if it stops working again. bizarre.
k2buckley said:
http://forum.xda-developers.com/showthread.php?t=2922645
It seems that certain brands of tempered glass screen protectors are causing the same issue that you describe.
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this fixed the problem. thank you for saving me time and anguish returning the phone
eb50 said:
this fixed the problem. thank you for saving me time and anguish returning the phone
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You're welcome. I'm glad you got it straightened out
k2buckley said:
You're welcome. I'm glad you got it straightened out
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My tempered glass has a cutout for the 2 sensors on the left, are there any sensors on the right of the speaker? My proximity sensor also is not working. I will probably return my tempered glass also if this is the case...
This is happening to me and I don't have a screen protector. It's really getting annoying.
I'm having issues as well.... Not using any screen protector or whatsoever...
Yeh same here.. Looks like the sensor is maybe too sensitive. Hope sw can fix this.
+1 for the issue.
Cannot hang up after a call because the screen is black. Have to push the power button to wake it up first.
No screen protector.
mikkelwe said:
+1 for the issue.
Cannot hang up after a call because the screen is black. Have to push the power button to wake it up first.
No screen protector.
Click to expand...
Click to collapse
I just restored a backup of the original rom and the problem went away. So it's probably an issue with cm. Was on cm nightly from 01-13-2014
Did you try going to settings , accessibility , power button ends call, toggle that on and off.
After completing the above mentioned step. Reboot your phone and try making a call. I hope the issue get resolved.
I tried this step on an unrooted phone, which was recieved just yesterday.
I got this fix from some other thread.
Is there a way to turn off proximity sensor without rooting? Looked through setting and must have missed it. Thanks in advance.
Still having this issue as well. I tried toggling the power button option then restarting my phone, it seems to help for a very short period of time (few hours maybe). I have tried several different screen protectors, the most recent ones having a cut out for the sensor and there is a decent gap between the two. Reloaded my phone several times and installed 5.0.1
The sensor doesn't really work to turn on the display when I go to pickup the phone and is spotty when making a call. In the first minute or so of the call, I can take the phone away from my head and it will register, illuminating the screen, after that it stops working.
I can't understand how it could be the screen protector at this point, it's no where close to obstructing the sensor.
Guess it's time to send this thing back. I must be nuts because I keep trying this power button suggestion and it just doesn't work for me longer than a few hours.
Same here, using a plastic rinkage screen protector no bubbles in it and the edge falls a good few MM from the sensor.
CM12 nightly builds still do it I'm on the 2/19th build with Franco kernel.
Best solution is get rid of the junk and get a Note 4. Mine is such a crap phone. It doesn't even do anything special except be big.
Hi,
Just to tell that I've got this pb since I installed the Spigen crystal protection, not even a tempered glass.
Before that I still had the original cheap film you get when you unbox, with the white corner.. the crystal is really nicer but it screws the sensor...
I believe it is software related. I have a tempered glass screen protector that does not cover the proximity sensor. I have noticed that about 60% of the time the screen does not turn back on when I move the phone away from my head. It seems to happen more when the phone call is longer than one minute. I also had a tempered glass protector that covered the sensor and had the same behavior. I did use an app to test the proximity sensor and with both screen protectors it worked 100% of the time using the app.
Sent from my Nexus 6 using XDA Premium HD app

[Q] Proximity sensor issue with tempered glass

I got a new tempered glass screen protector, however, it is covering the proximity sensor located directly to the left of the top speaker. Since it is covering the sensor, I am unable to access the dial screen during calls 9 out of 10 times unless i keep swiping my finger on top of the sensor to get it to work. I got AndroSensor to test out the sensor and it does stay at 0.0in 90% of the time. When it does work, the value returned is 2.0in. I really don't want to replace this screen protector because it is nice and love the smoothness of it but unable to use the keypad during calls is too much.
Is there a way to manually turn on the dial screen during calls? Tried swiping, pinching, you name it.
Is there a hidden setting I could try like entering *#0*# on some phones for a workaround solution?
Is there a way to modify the settings of the proximity sensor? I am rooted.
The weird thing is there is a cutout on the protector but it is on the right side... Most of the pictures I saw of tempered glass for Nexus 6 had the left side covered but right side cut out as well. What's on the right side that is more important than the proximity sensor? Did they not know? Blah sorry for rant...
Its a problem with your tempered glass, contact the company whom you bought it from. Request a defect.
Theres a tempered glass thread in the accessories section where they have the same problem depending on what tempered glass you purchased.
Thanks zephiK, I'll check out that thread!
The below mentioned fix is for brand new Nexus 6.
Did you try going to settings , accessibility , power button ends call, toggle that on and off.
After completing the above mentioned step. Reboot your phone and try making a call. I hope the issue get resolved.
I tried this step on an unrooted phone, which was recieved just yesterday.
I got this fix from some other thread.

Phone locks as soon as I unlock

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

Proximity sensor/screen issue during calls?

I am running the latest a stock debloated 6.0 rom from tupac4u right now and having some issue during phone calls. For me I make or receive a call and my display will turn off even before putting the phone to my face. However, getting the screen on during a call is a bit hard to do as pressing the power button doesn't turn the screen on(sometimes have to press it 3 times to get it on). Anyway to fix this, or to disable this? Thank you
Using a screen protector? If yes, it may be blocking the proximity sensor, which is located just to the left of the top speaker grill.
In another thread I'm being told it's a bug with marshmallow. How accurate is that? And yes I am using a screen protector. I'm just not sure where the proximity sensor is so I can adjust accordingly?
http://forum.xda-developers.com/nexus-6/development/mod-fix-proximity-sensor-5-1-rom-t3069031
https://productforums.google.com/forum/#!category-topic/nexus/nexus-6/mIRwBP4Hx_Y
I do not use shell or film and have the problem for a long time. Tried everything but nothing helps you get used to it.
Knowing isuses since 5.1 and the sensor is on the top left of the earpiece
Yeah i took a light to find where it was. I have a tempered protector. Tried to use a knife to adjust it, but broke the screen protector. Oh well I'll just skip one cup of tea this week. If I go with a regular screen protector(one of those cheap $1 ones will that still cause issues?
Yup, the oversensitive proximity sensor issue started after 5.1 arrived. I too had a tempered glass covering the proximity sensor and it was working fine when I was on 5.0/5.0.2. I had to remove the tempered glass and get a new one which doesn't cover proximity sensor to fix this problem.
Did the same thing. Got a regular screen protector right now for a cheap, until I can find a tempered model that doesn't cover the proximity sensor.

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