Develop Bugs

screen not sensitive: manufacturing fault or unreal expectations ??

every review i've read online before i bought the unit was boasting about how "finger-friendly" the TP2 was, and that you could lightly swipe your finger across it to navigate the menu and that the touchscreen was very sensitive and whatnot
however after 2 weeks of use i find that to be relatively untrue. i've got to apply a fair amount of pressure on the screen to get it to register my input. of course, i'm posting this because i'm afraid that i might be damaging the screen in the process
i have no basis for comparison actually, my only 2 other touchscreen devices at home are an iphone and a cowon s9, both use capacitive screens. i always knew there was a big difference between capacitive screens and resistive screens, i just didn't know it was THIS huge. i can actually slide my finger lightly over the iphone's surface and its registered properly. the sliding probably feels smoother as its glass, but i can live with the TP2's plastic. what do you guys think ? should i get it checked out at the HTC store ?? its on the other side of town, don't wanna waste a trip as if its not a problem
oh yeah and just to get this out of the way, the screen is a membrane and not a hard surface right ?? everytime i press on the screen using my finger or the stylus, i can feel the screen slightly moving down, can also see the surface getting slightly dented at the point my finger pushes it if looking at it from a certain angle.
ps before somebody asks: i only got to test the keyboard at the telco store, some punk had cracked the screen of the display set, so i didn't know about this screen issue until i actually purchased the set
sorry for the long post, but i'd really appreciate any comments
TIA

Well, I don't have an Iphone so i can't tell you about how it compares with the TP2, however, i found the display to be much better than the one on my old XDA. It will probably never as good as a capacitive device like the touchpad on my laptop, but I found it to work very well. You have to apply a certain amount of pressue to the display, because it reacts on pressure, so I guess there is nothing wrong with that. I also see a small dent when I use the stylus and press the display. I cannot confirm the screen slightly going down when pressing it.
To summarize it, i use the Stylus 90% of the time. It glides much better on the display than my finger does so the overall experience is slightly better when using a stylus. Plus i don't get any greasy fingerprints on my display.
However the 10% I use my fingers to work on it (and 25% of that 10% is spent on polishing I found it to work pretty well, so in general I don't think that the reviews were off when it comes to finger usability.

What you are describing is probably normal. Resistive screens do require pressure. The TP2 tends to require less pressure than others, but nonetheless it does require it. There's no comparison if you compare it to a capacitive screen device because those don't require pressure at all.
The flexing of the screen that you described is something all resistive screens have. Again, if you compare the screen flex of the TP2 to earlier HTC devices, it's greatly improved.
To be on the safe side, go to a store and try out other resistive screen devices and see if you experience the same thing as your own. Then you'll know what is considered "normal".

thanks for the replies, i'll probably head down to my telco's store and see if they've replaced the display set then.
any other comments ??

You know I thought the same, waiting for a cab to increase the sensitivity because at the moment its quite annoying pressing buttons more than once...

From a few years to nowadays i´ve always used QTEK/HTC devices, my latest one is, ofcourse, HTC RHODIUM, the rom it has installed is RUU_Rhodium_HTC_PTG_1.19.410.0_Radio_Rhodium_3.44.25.27_Signed_Ship, and the screen is very sensitive and responsive, i´m just very pleased with it overall, it´s the best.
Cheers.

eXceed said:
You know I thought the same, waiting for a cab to increase the sensitivity because at the moment its quite annoying pressing buttons more than once...
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you don't need .cab
just change in registry...
HKLM/drivers/Touch Driver/pressurethreshold, (default=10000)
(I might not remember perfectly, but it's something like that)

try this?
http://forum.xda-developers.com/showthread.php?t=469865

this might help just re align your screen again using little pressure then your screen will not need some much pressure to work.
I have found the this not only aligns the screen but the pressure as well.
mine I just have to lightly touch it and dont have to press very much at all.
Cheers

Is it just me that can affect the screen without actually touching it?

At first I thought it was either a fluke, or just not happening, but now I know it definitely is. I can press onscreen keys and buttons without actually touching the screen.
I've seen recently that there is a screen tech that registers hovering fingers but I'm not sure if the ClearPad 2000 hardware can do this. "I'm not sure" meaning "I have no idea."
Interestingly it is affecting the way I type as as I type and skim over onscreen keys, I will sometimes get that "run you finger across a piano" effect. If that's makes sense to people.
I do know that I have a habbit of giving an electric shock to many things and people. Maybe I'm just highly charged and it's affecting the screen???
Is it just me that gets this?

i just had a few try's and i couldn't do it, i had to actually make contact for anything to happen

AFAIK, capacitive touchscreens work by reacting to the natural hand capacitance (i.e. the tiny amounts of electricity stored in your body). Therefore, I suppose it makes sense that different people can have different levels of capacitance.
No doubt someone who knows will be along soon!

Sometimes, the screen can be very sensitive ... and sometimes, you can accidently touch the trackpad.
Yeah, I experienced this issue as well.

+1

As already mentioned, capacitive screens do not actually register your finger touching the screen, but just the electric field your fingers produce when near to the sensor. The sensor in this case is actually a grid of thin wires spanned across the screen, you can see them when the screen is off and hold the phone at a certain angle to a lightsource.
So, depending on the calibration of the sensor, a finger will get registered even if you just hover over the glass.

No chance to hover and register a touch on mine, albeit when I hold the phone with my normal left-hand grip - my thumb being just above the volume key - it registers as a touch on the screen so a single finger slide doesn't result in a scroll but a zoom in/out. I really can't stand the length of the volume key.
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk

perhaps its the optical track ball ???? That will do it ... 1cm away from the track area the screen moves. as it should

Nah, for me it's not an issue with accidentally rubbing the optical trackball. Plus I've tested this a number of times. I can hover a finger over the screen and get the screen to respond. So when the keyboard is up, I can type without touching the screen. Seems to work best with my thumbs. And interestingly, my right thumb works "better" (if I can call it that) than my left.
Maybe I am just highly charged. Especially when the weather gets hotter I give a lot more things electrical shocks. I'd better hurry up and get a protective case!

This has happened to me quite a lot. I wasn't entirely sure if just psychic? Hahaha!
Sent from my HTC Desire using the XDA mobile application powered by Tapatalk

Does it for me all the time, I can hover at a maximum of about 2mm above the screen and it still reacts!!

PaulW21781 said:
Does it for me all the time, I can hover at a maximum of about 2mm above the screen and it still reacts!!
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Click to collapse
Conversely I can touch my screen really gently and nothing happens.

poldie said:
Conversely I can touch my screen really gently and nothing happens.
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Click to collapse
Yes this how my Desire reacts also, I can very very gently touch the screen without it being registered.

Hey Cleargrey,
I can confirm this behaviour on my Desire. The explenation given by petzlux is also correct.
Friendly regards,
Joost

The force is strong in you, my young padawan!

brrrbaybay said:
Hey Cleargrey,
I can confirm this behaviour on my Desire. The explenation given by petzlux is also correct.
Friendly regards,
Joost
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Click to collapse
Thanks. But I prefer to believe I have supreme ethereal powers.

Pixel Imprint : Detection [HELP]

I have some doubts on the fingerprint sensor region. Are we supposed to press the finger on the whole region all the time or is it sufficient to press some part of it? In my case, consider the region below the diameter of the sensor. I can see a line.. Only visible when I hold it up against the light in a horizontal angle. And when I tap the region below the diameter ie., Covering only the bottom 30 to 35% of the sensor. There's no detection at all. Is it normal?
And sometimes when the phone is idle for a while on the desk and I lift it up to unlock, it doesn't unlock on the first try. I have to tap again. I asked the Google support team and they said they're not sure if it's expected. Can anyone confirm? I have 3 more days left for replacement in my seller.
Thanks.

I'd say mine works if I cover 40% of the sensor whether that would be at the top or bottom. Have your tried re-adding your prints, when you do try out what ever is most natural to you and it should work everytime. Mine is flawless apart from when my hands are wet.

Mdizzle1 said:
I'd say mine works if I cover 40% of the sensor whether that would be at the top or bottom. Have your tried re-adding your prints, when you do try out what ever is most natural to you and it should work everytime. Mine is flawless apart from when my hands are wet.
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Yes I have done that multiple times. It's just that when the phone screen is off for a while, it won't unlock on first try. Have to tap again.

AnandMuralidhar said:
Yes I have done that multiple times. It's just that when the phone screen is off for a while, it won't unlock on first try. Have to tap again.
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Click to collapse
I'm assuming Doze is the cause. Which is a fair trade off.
Sent from my Pixel XL using Tapatalk

Note 10 plus fingerprint scanner issues

Got the phone few days ago. Most of the time, fingerprint works on first or second attempts. But now and then it takes 4-5 attempts. and on two occasions i had to try 8-9 times to get it to work. Is it a problem only i am facing or its a common problem? i already updated phone after buying. should i get it replaced or it will be ok with next update
Thanks.

common problem i think. not as fast as the previous one on N9

Well, it is not widespread or "common", some users complain about this, but this issue has been discussed at lenght since the first days of this device, do a search, you will find some useful tips, My sensor is very fast and accurate, I think it depends on several factors, temp, moisture, the way you registered the fingers, screen protectors, etc

Also, register the same finger multiple times... I believe you can add 5 fingerprints....

I understand what you are talking about. I was so frustrated with the phone when I first got it. I deleted all my finger prints and then set them up again. Make sure to slowly follow the fingerprint instructions when adding. I added multiple fingers and some more than once. I have not had any issues since. I have also read some people say remove the factory screen protector. I still have mine on with no issues. Good luck!

Mshawnlane said:
I understand what you are talking about. I was so frustrated with the phone when I first got it. I deleted all my finger prints and then set them up again. Make sure to slowly follow the fingerprint instructions when adding. I added multiple fingers and some more than once. I have not had any issues since. I have also read some people say remove the factory screen protector. I still have mine on with no issues. Good luck!
Click to expand...
Click to collapse
did you have the same issue as mine? like u had to make several attempts and sometimes even 8-9 times to make it work?

only time I've had problems with mine is when my hands have been extremely dry, putting slight moisture on my finger can make it scan better, but for the most part it works perfect unless I'm somewhere hot and dry.

I have similar issues when I have a screen protector on the phone. Sometimes I have to press multiple times, sometimes I have to press harder. Finally going without anything on the screen and the sensor works like a charm.

Screen touch sensitivity.
On my Note 10+ 5G (SM-N976U) I have a setting on the Display page (scroll down near the bottom) that increases touch sensitivity specifically for use with screen protectors. The screen itself is Gorilla Glass 6, which is twice as strong as Gorilla Glass 5, so, if you are the careful sort, you can get by without a glass protector. Even with an extra curved glass protector, with touch sensitivity turned up, I can use light gloves & still the capacitance works fine.

Touch sensitivity has nothing to do with the fingerprint sensor.

Mine works perfect with screen protector. Sure if you put new screen peotector, it takes time to recognise finger. But when protector sits perfect than no prob at all.
Sent from my SM-N976B using Tapatalk

Mine drives me mad , adding finger prints mostly does not work , i cant record my thumb print at all , was wondering if the sensor is not correct under the screen ,its always hit or miss on my phone , with my wifes note 10 there are no problems

peekie said:
Mine drives me mad , adding finger prints mostly does not work , i cant record my thumb print at all , was wondering if the sensor is not correct under the screen ,its always hit or miss on my phone , with my wifes note 10 there are no problems
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Make a warranty claim, there is no point to complain here, sorry

winol said:
Make a warranty claim, there is no point to complain here, sorry
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Click to collapse
A hard reset solved the problem , it was not a complaint post i made but a comment on the fingerprint sensor, now fixed

I'm missing the iris scanner from the note 9.
Might send it back and go back to the 9

clax6 said:
I'm missing the iris scanner from the note 9.
Might send it back and go back to the 9
Click to expand...
Click to collapse
the sensor works well as long as you don't have dry hands, lick your finger/thumb and it will work every time, sad but true. it's something I realise after it working flawlessly while drinking in a beer garden with condensed glasses but the rest of the time it was hit and miss. seems if your skin is too dry it doesn't read well, but add a bit moisture and it works perfectly. guess it has something to do with the technology in the new sensor using vibration instead of imaging.

Belimawr said:
the sensor works well as long as you don't have dry hands, lick your finger/thumb and it will work every time, sad but true. it's something I realise after it working flawlessly while drinking in a beer garden with condensed glasses but the rest of the time it was hit and miss. seems if your skin is too dry it doesn't read well, but add a bit moisture and it works perfectly. guess it has something to do with the technology in the new sensor using vibration instead of imaging.
Click to expand...
Click to collapse
Yes, lick your finger everytime you want it to work in the midst of a pandemic that seems to be spread by the virus getting transmitted from the hands to the face everytime you touch it...
You can also try this - https://forum.xda-developers.com/galaxy-note-10+/themes/fingerprint-speed-hack-t4071893
No need to lick fingers now...

Excellent advice from ultramag69, this mostly solved my problem, but I'm not happy with Samsung, This problem should not happen on such an expensive device from a famous brand

kimtiti said:
Excellent advice from ultramag69, this mostly solved my problem, but I'm not happy with Samsung, This problem should not happen on such an expensive device from a famous brand
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Click to collapse
The other advice I've found is to set up multiple finger prints with the same finger (you can usually set 5 fingerprints). This will improve the hit rate of the fingerprint sensor...

ultramag69 said:
The other advice I've found is to set up multiple finger prints with the same finger (you can usually set 5 fingerprints). This will improve the hit rate of the fingerprint sensor...
Click to expand...
Click to collapse
Yes it's maximum 4 on this device, it helps a little also

Fingerprint reader problems

Hi,
Do you have cases when the fingerprint wont unlock the phone (until 5 failures are reached)
This happens to me every now and then and is quite annoying. I don't have a screen protector and have disabled battery optimization for biometrics. Wondering whether to bring the phone for repair.

Did you update to ATE6? If not, please do.
Also try to re-add your fingerprints again, i found that speed and quality of fp sensor depends on how "good" you scanned your fp-s.
Another trick is to press harder when scanning and unlocking (which also works).

Yes, I am on ATE6. Will renroll fp to see.

The issue that I've noticed what it could be is the scanner is always active. The problem I face is when I pull the phone out of my pocket I've reached my attempts and have to use my pin.
In the case of the other post, just add 2 of the same finger. My thumb and pointer are in it twice each

creep138 said:
The issue that I've noticed what it could be is the scanner is always active. The problem I face is when I pull the phone out of my pocket I've reached my attempts and have to use my pin.
In the case of the other post, just add 2 of the same finger. My thumb and pointer are in it twice each
Click to expand...
Click to collapse
I don't have this experience with pulling out of the pocket. Added the finger again and now I am trying to train myself how to press harder and hold the finger patiently until it unlocks.

Adding same finger twice solved this problem for me, when adding second time make sure to scan your finger in different angles, almost like youre trying to miss scanner

S20 here. New tip. I think ultrasonic fingerprint reader is located slightly off-center to the left, so when adding and scanning your fingerprints, aim slightly left.
I discovered this yesterday while cleaning the screen under a bright table lamp, I noticed that you can actually see exact reader's location, where it is bonded to the screen underneath it. I assumed it's not visible.
Reader appears to be letterbox shaped, length around 1.6, width around 0.7 centimeters.
When you turn the screen on, fingerprint icon is located in the center of the screen, you can almost fit another icon next to it to the left, to represent reader's length.
Combined with other tips, some also mentioned by the users above, I rarely have to scan twice now, three times tops. Before I often ran out of allowed number of attempts and had to enter password. Still not perfect or super consistent, but much better. Soo..
Main tips:
• When adding and scanning your fingerprints, aim slightly left. Always keep reader's shape and position in mind. Turn off your screen, and examine it under bright desk lamp, to determine exact reader's shape and location.
• Register your thumb two times for each hand, while rotating your phone (slowly from portrait to landscape, back, and beyond until phone hits space between your thumb and index finger) and move thumb slightly towards finger's bend point and then towards fingertip (do it all over something soft in case you drop it while rotating).
• After you added your fingerprints, lock and unlock your phone multiple times (let's say 10 times) using each hand before you decide if doing it all over is necessary. Maybe even keep it for a day, see if phone manages to optimize data, or maybe you will get used to positioning your fingers in a certain way.
• Make sure to moisturize your hands, noticed scanner struggles with dry skin.
• You may also try to register both left and right thumbs (or other fingers) at the same time, this may speed up unlock, though not sure how secure this is.
• Don't hold your finger for too long, simply firmly tap and lift, phone should unlock.

I would try extra sensitive screen setting in display and try re register fp again.
I've heard some registering same finger twice but I don't really have any fp issues after disabling optimization of the biometrics apk

jasons1004 said:
I would try extra sensitive screen setting in display and try re register fp again.
I've heard some registering same finger twice but I don't really have any fp issues after disabling optimization of the biometrics apk
Click to expand...
Click to collapse
I remember having Touch Sensitivity alway set to on, believe it helped with gaming a bit, but found it had little or no effect on fingerprint reading, was constantly running out of attempts, and was forced to enter password, which is very inconvenient when you're in a public place. But I think it's still worth a try, maybe on S20's that option is somehow interconnected with fingerprint scanner, and boosts something in it as well, but I personally noticed no improvement.
Disabling battery usage optimization for "com.samsung.android.biometrics.app.setting" in "Optimise battery usage", did not improve recognition. I think you should still do it, as it can reduce occasional delay, but if you're using your phone all the time, locking and unlocking, etc, and having reader problems, this will not improve recognition. When it says no match (press harder, cover entire sensor, etc), it means software and scanner are working and reading your fingerprints, but failing to match patterns, so disabling optimization will not improve anything in this scenario. You should delete and try adding your fingerprints again.
Now, after registering same finger twice I noticed immediate improvement in recognition, and looking online for different tips of how you should hold your phone while adding fingerprints, was able to improve recognition even further.
Along with tips mentioned in my previous post, I now rarely have to go beyond two attempts.
Maybe this improvement also has to do with us instinctively learning what works and what doesn't.
Maybe this also has to do with finger size, skin (space between and width of friction ridges), and skin type (dry, oily, etc), that's why we have so many mixed reports. Also hygiene. I noticed with excessive hand washing, number of successful recognitions decreased, even with well moisturized hands.
In conclusion I'll say there is definitely room for improvement here, maybe larger more powerful ultrasonic readers are the answer, maybe better software. Because even with all the tips and tricks, it's not perfect, at least in my experience.
Oh, almost forgot, that factory screen protector has to go. Better fingerprint reading and much better picture quality without it.
And of course, make sure all the latest updates are installed, to all the people who just got their phone out of the box.

I typically enroll 4 of the same finger. I only use my right thumb and really haven't had any issues. I have the WhiteStone Dome glass installed. I have increased touch sensitivity turned on.

Using a poly screen protector with only two registered finger. Working perfectly with absolute zero issue.