Develop Bugs

[ULTIMATE GUIDE] Fingerprint sensor speeding up

Hey there..
I've had the phone for a few weeks and like most of you I wasn't satisfied with the performance of the fingerprint sensor. After tying all the how-to and walk-through guides to no avail, I decided to give something a try and to my surprise the FP sensor is working flawlessly.
So, here is how;
While registering your finger, touch the sensor as Lightly as possible and keep moving it around till it's registered. While unblocking the phone don't press too hard on the sensor area, use the same light touch that you used to register your finger.
It's been working like a charm without the dreadful 'no match' error for over 10 days.
Hope this helps.

Too much theories, everyone say its, but this phone needs software upgrade indeed.

HTCDevil said:
Too much theories, everyone say its, but this phone needs software upgrade indeed.
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Click to collapse
Give this one a try. :good:

I'll give it a try. Thanks.
I also hate the fact that this phone let's you register only 3 fingerprints.

No way
All the same for me. When you using FP for a continuous time (a couple of a continuous opening) it's working like a charm, but after a "hour" of a rest all problems comes again
That's the truth from me.

zorzgeo said:
No way
All the same for me. When you using FP for a continuous time (a couple of a continuous opening) it's working like a charm, but after a "hour" of a rest all problems comes again
That's the truth from me.
Click to expand...
Click to collapse
I have the same problem. It's absolutely horible in the morning, for the second day in a row had to use pin to unlock. After that - all fine for a hour or two.

Maybe working how a wind blowing as i see
Sent from my Galaxy A50 using Tapatalk

zorzgeo said:
No way
All the same for me. When you using FP for a continuous time (a couple of a continuous opening) it's working like a charm, but after a "hour" of a rest all problems comes again
That's the truth from me.
Click to expand...
Click to collapse
Me too

Tried it and still the same. Software update is what we need.

winchelle22 said:
Tried it and still the same. Software update is what we need.
Click to expand...
Click to collapse
Got it now

Since April Update the fingerprint sensor is a bit better but still needs improvement.
I found two things:
1) We got the habit to just touch the sensor and it unlocks rapidly with our previous phones with normal sensor. The fact is that is when you put you finger on the screen we tend to remove it rapidly or to put too much pressure that the sensor cannot read it. That is my personal findings.
2) Found a post on XDA A50 section but unable to find it now but the trick works for me. When you are registering your fingerprint as example fingerprint 1 put the same thumb from left and right hand each time. Example your percentage registration is 15% your put your right thumb as soon as it increases you put the left thumb and so on until it complete registration. You can use all the three slots with doing so and it increases the responsiveness of the sensor while unlocking. I used only two slots since my girlfriend uses one on my phone and it works very well.
Have a try and let me know.

Ultiweap said:
since my girlfriend uses one on my phone and it works very well.
.
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Click to collapse
This is VERY VERY BAD !:laugh:

pabgar said:
This is VERY VERY BAD !:laugh:
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Click to collapse
Hehe yes... I trust her so it is ok

Pay attention please.
Here some tricks to try for FP speeding up.
As 1st, dlete all entered finger prints. After that lower the phone light at minimum (Adaptive Brightness keep ON and slider set to minimum).
As 2nd, form a three fingerprints with only one finger frequently used with such so light screen touching.
As 3rd, return to Adaptive Brightness and OFF/ON it on button.
After that my FP sensor react as a charm in any case. I don't use AOD. Just lock screen.
But i have made som goodness with my wish picture as a lock screen. I have made a light white circle with the dimension and a positin like a FP sensor so it helping me to light the FP area
Here is my picture so You can use it to form Yours own.
FP ScreenLock picture model LINK

zorzgeo said:
Pay attention please.
Here some tricks to try for FP speeding up.
As 1st, dlete all entered finger prints. After that lower the phone light at minimum (Adaptive Brightness keep ON and slider set to minimum).
As 2nd, form a three fingerprints with only one finger frequently used with such so light screen touching.
As 3rd, return to Adaptive Brightness and OFF/ON it on button.
After that my FP sensor react as a charm in any case. I don't use AOD. Just lock screen.
But i have made som goodness with my wish picture as a lock screen. I have made a light white circle with the dimension and a positin like a FP sensor so it helping me to light the FP area
Here is my picture so You can use it to form Yours own.
FP ScreenLock picture model LINK
Click to expand...
Click to collapse
Nice one. Did not thought doing this surely it can help, but does it help also during the day when outside?

It could be just better on sunlight. Brightnes slider then jump to max
Report You that.
P.S. Same precission on dyrect sun as in the room or a half shadow...
Sent from my Galaxy A50 using Tapatalk

zorzgeo said:
Pay attention please.
Here some tricks to try for FP speeding up.
As 1st, dlete all entered finger prints. After that lower the phone light at minimum (Adaptive Brightness keep ON and slider set to minimum).
As 2nd, form a three fingerprints with only one finger frequently used with such so light screen touching.
As 3rd, return to Adaptive Brightness and OFF/ON it on button.
After that my FP sensor react as a charm in any case. I don't use AOD. Just lock screen.
But i have made som goodness with my wish picture as a lock screen. I have made a light white circle with the dimension and a positin like a FP sensor so it helping me to light the FP area
Here is my picture so You can use it to form Yours own.
FP ScreenLock picture model LINK
Click to expand...
Click to collapse
I couldn't understand what you said in step 2 and 3. Can you please explain?

2nd: Add 3 FP but every FP with the same finger from various angles and just a soft, soft screen touching (not hard pressing) with Brightnes seted to min
3rd: After FP entering, go to Adaptive Brightness and turn it off and on to set the auto brightness vslue.
That's it.
Sent from my Galaxy A50 using Tapatalk

Anybody try it?

zorzgeo said:
Anybody try it?
Click to expand...
Click to collapse
Yes, I used your wallpaper. Kudos to you for coming up with such an innovative idea. But my FP sensor works the same with other wallpapers also. Not much gain in speed.

A70 fingerprint recognition problem

80% of the time i try to use fingerprint to unlock my device my fingerprint is not recognized.
Is this a software or hardware problem and how to solve it?

expl8rer said:
80% of the time i try to use fingerprint to unlock my device my fingerprint is not recognized.
Is this a software or hardware problem and how to solve it?
Click to expand...
Click to collapse
This is a hardware problem, which Samsung is trying to solve as if it's a software problem. They keep tweaking it, but it will never work as should (look at all the complaints about the s10 fingerprint sensor). An ultrasonic fingerprint reader behind the screen works in ideal circumstances, but on a phone it's just terrible.
I register my fingerprint and after 5 seconds it doesn't even unlock anymore. It says it's not my fingerprint. I can understand that your fingerprint changes slightly over a couple of days (I had to do some DIY in my house and I got a couple of scratches on my fingertips), afterwards my S8+ would ALWAYS unlock, but the A70 just thinks, well hey that must be someone elses finger.
I'm using face unlock and I must say it works very quickly. I read comments everywhere about people who stopped using fingerprint on these Samsung devices. It was a nice marketing trick, but what a terrible idea.

expl8rer said:
80% of the time i try to use fingerprint to unlock my device my fingerprint is not recognized.
Is this a software or hardware problem and how to solve it?
Click to expand...
Click to collapse
I was on the verge of returning the phone over how poorly the sensor was working, it was as bad as 1 in 5 touches working.
I've had a huge improvement by deleting my fingerprints and setting them up again as per this guide: https://youtu.be/X9y--nHmaco
Hope this helps.

chongo_au said:
I was on the verge of returning the phone over how poorly the sensor was working, it was as bad as 1 in 5 touches working.
I've had a huge improvement by deleting my fingerprints and setting them up again as per this guide: https://youtu.be/X9y--nHmaco
Hope this helps.
Click to expand...
Click to collapse
Thanks for that!! Works a treat.

Register 3 times, in the same position you will use to unlock like the @chongo_au video above
Dont folow the screen tip when registering. It is misleading
Also, emove transition effect on biometry preferences
Try also register one of the three like this: first, put yout finger on power button, and then put your finger on the scanner

leonbarroso said:
Register 3 times, in the same position you will use to unlock like the @chongo_au video above
Dont folow the screen tip when registering. It is misleading
Also, emove transition effect on biometry preferences
Try also register one of the three like this: first, put yout finger on power button, and then put your finger on the scanner
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Click to collapse
What do you mean by put your finger on the power button and then on the scanner?

G1032 said:
What do you mean by put your finger on the power button and then on the scanner?
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Click to collapse
1. put your finger over the power button (just to position, no pressing)
2. now put down your finger to scanner
why? because lot of people, when unlocking the device, do this movement, pressing power button first, and then press the scanner almost without moving the hand, using the right side of the right thumb
It is just a tip about positioning. It worked for me.

expl8rer said:
80% of the time i try to use fingerprint to unlock my device my fingerprint is not recognized.
Is this a software or hardware problem and how to solve it?
Click to expand...
Click to collapse
I got some tips to solve this problem, just moisten your finger a little bit, maybe you can lick your finger and then rub it with other finger, but don't let your finger dry completely (i.e. if your registered fingerprint is your thumb, then lick your thumb a little bit and then rub the surface with your index finger) and then place your finger to the sensor as usual. Hope this work on you too! And sorry for my bad English.

a70 fingerprint recognition
I also thought that it was the sensor Until I did a reset on my phone to remove some of the clutter I put in with Smartswitch
fortunately you don't have to reset your phone
-> first remove all your fingerprints saved!
->think carefully about the part of your finger that you will place in contact with the sensor!
->place that part on the sensor first covering it completely ..no need for too much pressure !
->keep your finger in this position for 3 seconds then follow attentively the direction for positioning ..each position 3 seconds
And here you have it, I am hitting it 100% of the time with dry or sweaty fingers!
->-> bonus it works in every orientation of you fingers even upside down!!
youtube ->A70 sensor work under all orientations!

Fingerprint in Android Q for A70 fixed
I have an A70, and had the same problem as all of you are having, with the fingerprint, but I have just solved it.
What you need to do is download samfirm, and look for the firmware, from Bolivia, with this date: 21/03/2020.
Just flash this firmware from Bolivia, with this date, and your fingerprint problems will get fixed.

it works fine for me

An easier solution is to first remove all fingerprints then reboot.
Clean you phone screen. Also wash your hands too.
When boot complete re-register your fingerprint.
Since you can register three fingers in total, register the finger you will most commonly use to unlock phone two times. Make sure you change your finger position everytime you scan it
The type of screen protector you use can also affect fingerprint scanner
Matt protectors fail the scanner.

Disable fingerprint sensor while the screen is off.

How to disable the fingerprint sensor while the screen is off?
I want to decrease the energy consumption due to the use of fingerprint sensor while the screen is off.
Thanks

Jesus christ, it's a 4000mAh battery

yes . this . also whenever i took out the phone from my pocket it always said that many fail attemp of unlock with fingerprint . about 7-10 and i have to wait fews second to unlock it
that is so annoying
i would rather turn screen on then unlock with fingerprint . that would be better

HansKila said:
yes . this . also whenever i took out the phone from my pocket it always said that many fail attemp of unlock with fingerprint . about 7-10 and i have to wait fews second to unlock it
that is so annoying
i would rather turn screen on then unlock with fingerprint . that would be better
Click to expand...
Click to collapse
I don't have this problem, maybe because accidental touch protection in settings>display is on.

madd0g said:
Jesus christ, it's a 4000mAh battery
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Click to collapse
? yeah, no-one would notice.

NoCo33 said:
I don't have this problem, maybe because accidental touch protection in settings>display is on.
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Click to collapse
it happen with and without accident touch protection . that why i change to face unlock but it useless in darkplace

HansKila said:
it happen with and without accident touch protection . that why i change to face unlock but it useless in darkplace
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Click to collapse
Just use a White wallpaper on lockscreen and see the Magic happens!

diegovmsouza said:
Just use a White wallpaper on lockscreen and see the Magic happens!
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Click to collapse
woah , i see , so the trick is white wallpaper will make screen brighter and also make your face brighter so the camera can recognize better XD

HansKila said:
woah , i see , so the trick is white wallpaper will make screen brighter and also make your face brighter so the camera can recognize better XD
Click to expand...
Click to collapse
actually you can use whatever screenlock wallpaper and turn on brighten screen in face recognition settings. This feature brightens the screen illuminatemore light so it can recognize your face and then return the brightness to normal.

Fingerprint not working on S20+ AOD

Hi
I just got a new S20+ however I noticed that the fingerprint sensor doesn't work when it goes on Always on display. Also, if I enable the icon to show when I tap, it doesn't show. Is this a software problem? how can I fix this?
Please help someone out! Thanks!

renardiidx said:
Hi
I just got a new S20+ however I noticed that the fingerprint sensor doesn't work when it goes on Always on display. Also, if I enable the icon to show when I tap, it doesn't show. Is this a software problem? how can I fix this?
Please help someone out! Thanks!
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Click to collapse
Do you have screen protector on if so original or aftermarket?

Klopers33 said:
Do you have screen protector on if so original or aftermarket?
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Click to collapse
Sorry for the late answer.
I found out in the end it was the protective film that I had. I got a new one applied from a friend, the first day it worked just fine but now it's not working anymore on AOD.
How is this even possible? the touches are not detected in the lower part, the proximity sensor cannot be considering it would immediately turn off if I had to call if that was the case, what am I missing here?

I, too am facing this issue.
When the screen is off, I touched the lower half of the screen,
a) the AOD clock doesn't show up,
b) I am unable to use fingerprint scanner on AOD screen (it works fine on the unlock screen)
I have done soft reboot, factory reset, still no avail.
If someone knows how to fix this, PLEASE help.

Question Proximity sensor failure

Currently running Pixel Experience Plus android 11. Others dont report the same problem.
Would this be ROM based, firmware based, vendor based, or what else ??
Its a major annoyance as the tap to wake, face unlock, and position of the fingerprint reader all mean this wakes in pocket constantly.
Tried hard resets etc but stumped.

Phat Phreddy said:
Currently running Pixel Experience Plus android 11. Others dont report the same problem.
Would this be ROM based, firmware based, vendor based, or what else ??
Its a major annoyance as the tap to wake, face unlock, and position of the fingerprint reader all mean this wakes in pocket constantly.
Tried hard resets etc but stumped.
Click to expand...
Click to collapse
The reality is there is no proximity sensor present in mi 11x

and in miui the call screen becomes black as miui using accelerometer and some kind of hack to do that.

LikeCustomRom said:
The reality is there is no proximity sensor present in mi 11x
Click to expand...
Click to collapse
What the f...
So this constant pocket activation is a feature ??
I cant believe everyone is just living with this ??

Unfortunately it is so and this explains why even if the phone is away from the ear but placed vertically the screen turns black.

pegasoc said:
Unfortunately it is so and this explains why even if the phone is away from the ear but placed vertically the screen turns black.
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Click to collapse
Is that only with MIUI ??
So what combination of settings are people using to minimize this ??
I haven't had a phone without a proximity sensor in years, I didnt even think one would be sold that way.. Its unusable like this, constantly waking in pockets, error input and attempted unocks etc

Testing it (pixel experience plus) my phone never senses, in any orientation.. Others report some form of sensing.
Upright.. hand to phone.. hand over phone.. I am not getting anything.
It wakes on movement.. It wakes to attempt face unlock (I guess).. It wakes on screen touch,, it never overrides that despite there being an option to prevent accidental wake up (which has no noticeable effect). I dont see what combo of settings may be correct here.
Its currently flat out unusable.. Its a mobile phone which you cannot put in your pocket and which wakes as you carry it. People cant be just accepting this...

The Truth is truth that this phone doesn't have proximity sensor

LikeCustomRom said:
The Truth is truth that this phone doesn't have proximity sensor
Click to expand...
Click to collapse
thats now shockingly understood..
But other people report some kind of gyro / light sensor / accelerometer / etc combination thats providing some useability. Useability I dont have (Pixel experience plus 11).
The config I have so far.. Is not doing anything.. and is basically non viable..
You cant put it in your pocket !!! What kind of mobile phone cant be put in a pocket or carried..

Phat Phreddy said:
Its a major annoyance as the tap to wake, face unlock, and position of the fingerprint reader all mean this wakes in pocket constantly.
Click to expand...
Click to collapse
I don't get what your problem is, plz describe it better. You say that you have problem with proximity sensor, but then you go on to say that your phone unlocks in your pocket for no reason and I see no connection between these two statements. Proximity sensor works only during calls, it has nothing to do with preventing unlocking tge smartphone in your pocket. Are you sure that you're not accidentally putting your finger on the fingerprint reader when you put it in the pocket? If you want, you can make the fingerprint reader read your fingerprint only after you press the power button, mere touching will not unlock it. But you have to change it in settings in MIUI, I am not sure how it works on your Custom ROM.
I have no problems you describe on my Poco F3 unit. If reverting to stock MIUI doesn't work, consider sending it for a warranty repair.
Phat Phreddy said:
Currently running Pixel Experience Plus android 11. Others dont report the same problem.
Click to expand...
Click to collapse
Yep, sounds like a hardware problem.