Fingerprint sensor - Samsung C9 Pro Questions & Answers

How to improve the quality of the fingerprint sensor on the C9 Pro?

i am planning on buying this phone. is the fingerprint sensor really bad on this phone??? and is thefingerprint sensor made out of glass or plastic and does get scratched easily like s7 edge. i am questioning insead of answering sorry but i appreciate your reply...

No! The fingerprint sensor is only less sensitive than other models.

Less Sensitive! are you implying it doesnot work perfectly while touching the sensor but works fine while pressing the sensor/home button??? And does the fingerprint sensor easily gets scratch on it?

The fingerprint sensor works very poorly, worst of all the smartphones I had. While touching the sensor works fine or wrong (more often wrong).
The fingerprint sensor don't get scratch on it.

How long have you had your phone if its still under warranty you could have it checked near your local samsung customer care and thanks for the info Xd (keep us updated if you can)...

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[Q] Replace Note 4 Fingerprint Sensor with S6 Fingerprint Sensor

Hi, as I stated on the title, I would like to discuss about the Note 4 Fingerprint Sensor and if we can replace it with S6 Fingerprint Sensor. Initially, I have 2 concerns, which are software and hardware incompatibilities.
A few weeks back, I flash my Note 3 with Darklord S6 port ROM. When I was setting the device up, it promoted me to set up the finger print scanner like the way the S6 asks, so I thought if we port the S6 ROM to the Note 4 it will change the way the sensor works and I no longer need to do the swipe gesture.
However, after a bit of research and discussions, the problem lies within the hardware, so even if I port the S6 ROM, if the hardware does not support it, then it is no use for the software.
But, I have looked around on Ebay and other sites for Note 4 and S6 sensor. They look very similar in shape, but I am not quite sure about the exact dimensions (May be someone in this forum who has 2 devices can do the measurement for me ;D). So I am thinking if we can replace the Note 4 sensor with the S6 sensor and port the S6 ROM to the Note 4, would it technically solve the problem and now we can have the Note 4 with S6 sensor that works like a CHAMP?
If someone has already created a thread similar to this, please let me know and I will delete it or the mod can do it too. This is my 1st post so sorry in advance if I cross some lines
**Disclaimer** Please do not try this idea on your devices if you are not a professional. I am not responsible and cannot be hold accountable if you break your devices. Good day!
Even if you replace the sensor, there's still the software that would need to be reprogrammed in order to utilize it properly. You wouldn't be able to simply replace the sensor and expect it to magically work.
Just saying.
Sent from my SAMSUNG-SM-N910A using Tapatalk
Yeah, I think the swiping fingerprint scanner is part of the security software developed by Samsung earlier on. While the fingerprint scanner on the Note 4, Note Edge, SGS5, SGS6 and SGS6 Edge are probably all the same sensor. It's the security software that would have to be updated in order for it to be used like the SGS6/SGS6 Edge's fingerprint scanner.

Finger print sensor position bad press

Is anyone else sick of the bad press this phone is getting for fingerprint sensor ? Many site saying the phone has a major flaw and buyers beware. Granted it's not the best but I personally do not use the sensor and with 3 other options to unlock the phone i think it's a moutain out of mole hill issue.
Maybe this is a big issue to security minded people?
You said yourself it's not an issue because you don't use it. The fingerprint sensor is in an absolutely awful place. This is the first phone in the past several years I won't be able to use it, and will have to use another method. I setup face recognition, but I'm sure it's going to have issues in dark rooms, plus it can be fooled by a photo of yourself.
geoff5093 said:
You said yourself it's not an issue because you don't use it. The fingerprint sensor is in an absolutely awful place. This is the first phone in the past several years I won't be able to use it, and will have to use another method. I setup face recognition, but I'm sure it's going to have issues in dark rooms, plus it can be fooled by a photo of yourself.
Click to expand...
Click to collapse
Yes heard it is no where near as fast to use iris or facial recognition. Samsung obviously things an earlier release is more important than sensor placement as we know this was a last minute hash job just hope it does not ditract to much from what promises to be the best phone of the year
I've been using the fingerprint sensor all day without an issue.
Agreed. While I would have preferred it to be in the center like the Pixel or V20, finding it with a case on your phone is extremely easy. I'm sure I won't even think about it in couple weeks.
Sent from my iPad using Tapatalk
The finger print scanner works great for my right hand. I can easily find it and use it.
MY left hand wants to go to the heartbeat sensor. It will take some getting use to, but its not unusable.
True it would of been better if it was in the middle center by itself but hahh it doesnt break the phone for me.
4 digit passcode as like, forever.
It's all marketing, any publicity is still publicity. Remember the makers of GTAV paid for negative press. On purpose! Don't be blind to how "it" works.
Again. 4 digit passcode. If that. I don't live in fear.
it always good to have finger print sensor on front. i always use the sensor for samsung pay. you may need to look backside and front side for authenticating a transaction.
mattcall said:
Is anyone else sick of the bad press this phone is getting for fingerprint sensor ? Many site saying the phone has a major flaw and buyers beware. Granted it's not the best but I personally do not use the sensor and with 3 other options to unlock the phone i think it's a moutain out of mole hill issue.
Maybe this is a big issue to security minded people?
Click to expand...
Click to collapse
I use it without fail. The position on the back is not a problem for me. I prefer it on the back.
While not ideal, the fingerprint placement isn't a huge issue for me. As once i got my case i can honestly find it easily and not worry so much of smudging the camera.
I use my phones on the desk, table, and so on and the back sensor is an extra step for me, doesn't matter where it is or how well it works. Neither is facial or iris a work around because you have to pick up the phone. I've read many comment that after a time you become accustomed to rear scanners, might even like it better. Didn't happen with me, I've gone through a couple and I like them less and less the more I used them. While there is no perfect placement for every situation there is a reason why Apple and Samsung are trying to get the scanner under the screen, it's the placement that has the most strengths and fewest weaknesses. I'm a Note man anyways and as reports seem to indicate that we have hope Samsung will get the scanner they failed to get under this screen under that one it's a no brainer for me. My current phone is only a few months old and I picked up an LG watch sport the other day to get my toy need in check for a while. Assuming the international Note 8 can be rooted it will be my next phone.
Ive been wondering.. since its already in a bad position would it be even harder for me to reach it since im left handed.. what do u think?
Viouf said:
Ive been wondering.. since its already in a bad position would it be even harder for me to reach it since im left handed.. what do u think?
Click to expand...
Click to collapse
No, if anything you have a slight advantage. Just buy yourself a case and you should be good.
Astron8 said:
No, if anything you have a slight advantage. Just buy yourself a case and you should be good.
Click to expand...
Click to collapse
Oh you are right i thought it was on on left side of the cam (looking phone from rear view) thank u !

Do you miss not having the fingerprint scanner on the front?

Love my S8+.. however I think the biggest problem for me with the device is to get it unlocked without doing something very specific.
The iris scanner works fine.. but it has rules as far as how face the phone and distance yourself from it.
Are you guys also experiencing what I am as far as not being able to quickly unlock your phones from any casual position?
and to top it all, OK Google detection doesn't seem to work!
I agree I hate fingerprint scanners on the back. Tried to like them but never get used to having to pick up the phone when its laying flat on a table
Never use it anyways, just swipe to unlock. Not as paranoid as some are.
I really don't understand the bad press, I much prefer the new location!?
Before with my S7Edge if I wanted to one hand scan i had to hold the phone like a diving board, teetering out of my hand insecurely.
However with the new placement on the rear, i can middle finger scan one handded much more secrely with phone gripped between pinky, ring finger and thumb.
And finding the placement of the scanner is actually very easy to find if you use a case (any case for that matter...)
I sencerly hope people who are complaining with the new placement arent still scanning try to scan their thumbs because...that would be ludicrous!!, [emoji15anyways +1 for actiually liking the new location, a defenite improvement in my eyes of the S7 Edge.
Sent from my SM-G955F using Tapatalk
No, i like it. Most of the time i use face unlock or smart location unlock though.
I find it hard to hit. The LG V20 I had before with the scanner in the middle was not bad.
I've gone to using the iris scanner instead. It is working much better then the fingerprint scanner. Especially when you turn on the option to bypass the lock screen swipe.
You can unlock your phone using: face recognition, iris scan, voice recognition and you can have it unlock automatically when at certain location (home/office) or connected to BT in your car for example. Paranoid types can save critical files inside secure folder and leave the phone unlocked. In other words so many options, to avoid fingerprint altogether, if you dislike it. Personally I don't care, may be actually easier to use it on the back, than front, especially when used one handed, but I have larger hands and bought smaller S8, it may be different for people with smaller hands on S8+
I do miss the fingerprint scanner on the front. When at work it is much more discrete and less obvious to unlock and tap to read a message/email/txt etc when my phone is laying on a desk in front of me.
Iris Scanner: Great indoors and if holding phone in hand. Worthless outdoors and if phone is laying on table/desk.
Fingerprint Scanner: Awkward all around. Placement, shape, proximity to camera etc. This is my only real gripe. It isn't that the S8 fingerprint reader is terrible, it is that the iPhone one was *very* good and placed ideally.
Face Unlock: Faster and easier than the iris scanner , but same drawbacks and less secure.
PIN: Ye' Ole Faithful. Still works just fine
As a v20 user I find the back placement superior to front placement phones. Its more natural and you can get a better grip on the phone when doing it instead of risking dropping the phone.
Putting the camera so close to the sensor was a pretty poor decision I don't know how that made it into the final product.
Sent from my LG-H918 using XDA-Developers Legacy app
Wanted to be OK with it, but it's a PITA to be honest... And the recent update seems to have broken face unlock (probably works 1 time in 10). Iris scanning not that easy. I often have the phone on the desk to one side, and unlocking now means picking up the phone. Will have to investigate bluetooth pairing stuff, etc. Looking forward to sub-glass fingerprint reader (hopefully on Note 8)
Coming from a Nexus 6P I was used to it being on the back. On the nexus the placement was a bit better which made the access easier, but I like it nonetheless. I don't have my phone on the table a lot so no issues with picking it up like some other people do.
Yes. I wear glasses with a -15+ prescription, so the iris scanner is a complete non-starter for me. It won't even recognize my eyes through my glasses, and without my glasses I can't see the phone clearly enough to position my eyes for the scanner. The facial recognition is both not especially reliable and not all that secure, really. So, I'm stuck still using the fingerprint.
And having it on the back is a pain in the backside -- or on the backside, as the case may be. Even using smart unlock and trusted location, it's still a pain to have to reach across the phone and case when I'm trying to unlock the phone. The fingerprint sensor also seems to be considerably more finicky as to finger position than the S7's for some reason -- which is a bigger issue when I'm having to reach to unlock it from such an odd angle.
I honestly don't mind the position of the fingerprint scanner on the S8 - it's part of the reason I got the regular size instead of the plus. What I *do* mind is that it's a vertical rectangle - like, Samsung, nobody has fingers that can hit that when holding the phone like a normal person. If it was an oval shape I wouldn't mind half as much.
I've had to get a little used to its location over the past few days, but I find that my index finger tends to rest very close to it when I'm holding the phone, very easy to get to. I was used to using a finger on the back from the LG G4's power/volume controls on the back. I do find that it sometimes takes a little time, if you misjudge the distance and don't cover the entire sensor.
I've got a case on my S8 and it makes it easy to find the sensor. The fingerprint sensor was one of the (minor) things that made me get the S8 over the + because I figured the larger phone the sensor would be harder to reach. When I pick up the phone now I have my thumb near the power button and my index finger right over the fingerprint sensor. After I tap the sensor I just curl my finger so it supporting the phone from right under the sensor/camera. I probably have about a 75% first tap unlock rate.
I've never used a phone with a good front fingerprint sensor though, (only the note 4 with it's unreliable swipe sensor,) so I don't have much to compare to.
skrubol said:
I've got a case on my S8 and it makes it easy to find the sensor. The fingerprint sensor was one of the (minor) things that made me get the S8 over the + because I figured the larger phone the sensor would be harder to reach. When I pick up the phone now I have my thumb near the power button and my index finger right over the fingerprint sensor. After I tap the sensor I just curl my finger so it supporting the phone from right under the sensor/camera. I probably have about a 75% first tap unlock rate.
I've never used a phone with a good front fingerprint sensor though, (only the note 4 with it's unreliable swipe sensor,) so I don't have much to compare to.
Click to expand...
Click to collapse
OnePlus 3T front fingerprint sensor is like the Note 5's but 1000 times better. No stupid clicking/moving button. It works instantly with the screen off or on. It works no matter what angle you use to touch it. It can be remapped to do many different things. It works first time everytime for unlocking the phone and unlocking apps.
When I first picked up the s8 I didn't think FP scanner was a good location. After 5 minutes using I feel like it's perfect. Mine also unlocks with the slightest finger touch and instantly. My note 5 was awkward at best unless laying on a desk. I do understand what you're saying about it laying on it's back. But I never hit the camera and it's snappy. I give it a 10
Sent from my SM-G955U using Tapatalk
I really like the placement. It feels natural
Sent from my SM-G955U using Tapatalk
I have the Gear S3 and use smart lock, so I rarely have to use the fingerprint scanner (or face or iris scanner form that matter) very often.
evo4g63t said:
As a v20 user I find the back placement superior to front placement phones. Its more natural and you can get a better grip on the phone when doing it instead of risking dropping the phone.
Putting the camera so close to the sensor was a pretty poor decision I don't know how that made it into the final product.
Sent from my LG-H918 using XDA-Developers Legacy app
Click to expand...
Click to collapse
Honestly I think it was just for symmetry. To me there isn't any other logical reasoning (unless it's tied to the other electronics located there like the cam and heart rate sensor)
Sent from my SM-G955U using Tapatalk

Galaxy S8 fingerprint scanner is a trash

Hi,
Does anyone know how could Samsung or its supplier produce such a bad fingerprint scanner that the S8 has? On cheaper phones like Xiaomi or Huawei the FP Sc is quick like hell and it is almost doesn’t metter how you place your finger on it. But in the case of an S8 it is not only in a bad position but it works so badly that in many times it unlocks the phone after the 5th try or so. What do you think? Is this the fault of the software or the sensor? Wasn’t that a shame to Samsung to release a phone like this? Or nobody cares if they get a gorgeous screen?
Mine works fine, its your finger.
There's an easy fix for it, just don't use it
Exactly my thought! I had to put my finger 3 times on average to get it to work. sometimes it just vibrates and doesn't work. I know its not my finger being dirty or incorrectly positioned because it happens many many, many times in last 3/4 months.
Mine works fine too, unlocks at first try unless my finger is dirty, I have this phone for more than a year.
Its just you buddy
It is prone to scratch. Daily fine dust can easy put scratch on it during finger scan. Check yours for scratches.
yea it is true, i come from huawai p10 lite and was so fast, omg.. and now i have s8+ and fingerprint from my opinion its a trash. i have to put 2 3 times to work, and i will sell it becouse evry time i have to clean that stupid camera to make a photoooo oh samsung what are you doing to us

Thinking about buying One Plus 6T, concerned about finger print sensor

Thinking about buying a One Plus 6T. Fine with no audio jack, teardrop, and I'm concerned about the inscreen finger print sensor. Since first generation technology heard it was slow, not as reliable as rear ones.
Wondering about people's one Plus 6T experience. Has software upgrades helped? Any technique for using it?
Mine was a little wonky at first, but worked good for the most part. Now several updates down the road I have no problems at all with it except every once in awhile if out in very bright sun light. But that's few and far between.
From my experience and experiences I have read the sensor is faster than a traditional rear one. Only issues I ever have is when my fingers are wet or dirty.
Finger print sensor and face unlock works just brilliant. dont hesitate to buy
I'll be the odd man out. I hate it. Probably 4 out of 10 times I hold my finger on it and nothing. Just glows at me, rather infuriating honestly.
10 out of 8 picks up. most probably you couldn't setup properly. you must setup same finger at least twice ?then will pick up super fast
bramgoodwin said:
Thinking about buying a One Plus 6T. Fine with no audio jack, teardrop, and I'm concerned about the inscreen finger print sensor. Since first generation technology heard it was slow, not as reliable as rear ones.
Wondering about people's one Plus 6T experience. Has software upgrades helped? Any technique for using it?
Click to expand...
Click to collapse
works 10 out of 10 times for me with clean fingers in any light situation. I think how much part of your finger gets registered also matters. I try to cover the whole part above the first line of the finger.
Works fast enuff not to bother u.
Never will be fast like a traditional one which works instantaneously.
How fast it is :
Imagine the time taken for a double tap on screen.
Giving allowances for differences in speed of double tap amongst us,
It will not be quicker than a double tap.
It will not be longer than a triple tap.
How often it doesn't work :
Works everytime.
Special occasions it won't work :
After a bath.
It will annoy u. Make u do twice/thrice.
It's not wet fingers. Wet fingers work as fine as dry.
May be the salt depostion form soap or the soaked effect of fingers.
Comaprision to OP7:
Slightly slower than op7.
Op6t is at the border level - anything even slightly slower than 6t will bother u. Op7 has some margins.
But op7 has no mirror black.
Soon 6T will not be available.
Buy it soon.
Kovhl said:
Works fast enuff not to bother u.
Never will be fast like a traditional one which works instantaneously.
How fast it is :
Imagine the time taken for a double tap on screen.
Giving allowances for differences in speed of double tap amongst us,
It will not be quicker than a double tap.
It will not be longer than a triple tap.
How often it doesn't work :
Works everytime.
Special occasions it won't work :
After a bath.
It will annoy u. Make u do twice/thrice.
It's not wet fingers. Wet fingers work as fine as dry.
May be the salt depostion form soap or the soaked effect of fingers.
Comaprision to OP7:
Slightly slower than op7.
Op6t is at the border level - anything even slightly slower than 6t will bother u. Op7 has some margins.
But op7 has no mirror black.
Soon 6T will not be available.
Buy it soon.
Click to expand...
Click to collapse
Which rom do you use? And how did you register your fingers? (Light levels, brightness levels)
at first i had some issues with it, even after registering the same finger 3 times it didnt worked all the times and always took a while, but than i installed the mclaren edition animation and worked much better
So here's my two cents. The Finger Print Scanning is slow. I have a Nexus 6P and that's faster. But from personal observation I can say that the Fingerprint is a Hit or Miss. It depends upon a number of factors. My own case: on Stock OOS Open Beta with a FP animation mod installed (DeadlyGhost's. It's amazing. Do give it a shot. Can be found in the themes section) , I'm getting amazing speeds. I'm using a Modded version of the Ripple Animation (forgot the real name) and the color set to purple I only have to touch to unlock. This is with an Unofficial Third party case installed. While on a Custom ROM with the same setup (minus the animation) it takes a solid 2 seconds. So it depends upon your setup, I guess. Also as someone commented earlier the McLaren animation helps. If you're stock and U rooted there is a guide. Just search around XDA. If you're Rooted, try the aforementioned Animation Mod. Though it will only work on OxygenOS.
I switched from LG to this phone. I got sick of lgs late updates. I'm glad that I did. There is a lot of development here for this phone. Plus with the ROM, mods, etc this phone is the best daily driver that I have ever owned.
One trick I used was to only setup my two thumbs and one index finger.
OP6T only allows for 5 fingerprints to be setup. I use two slots for each thumb. OOS uses images to recognize your prints. By using two slots you add more images to the same finger which makes it even faster. Setting up the same finger twice can be difficult as it will take time because your print will be recognized, but this gives you the chance to capture your print at every angle possible.
Never found the sensor to be particularly slow.. it's faster than a iPhone 6s Plus.
When I bought this device I was a little worried like you, but trust me, the sensor is not a problem, is not perfect but neither horrible, it just works fine.
Mannan Qamar said:
So here's my two cents. The Finger Print Scanning is slow. I have a Nexus 6P and that's faster. But from personal observation I can say that the Fingerprint is a Hit or Miss. It depends upon a number of factors. My own case: on Stock OOS Open Beta with a FP animation mod installed (DeadlyGhost's. It's amazing. Do give it a shot. Can be found in the themes section) , I'm getting amazing speeds. I'm using a Modded version of the Ripple Animation (forgot the real name) and the color set to purple I only have to touch to unlock. This is with an Unofficial Third party case installed. While on a Custom ROM with the same setup (minus the animation) it takes a solid 2 seconds. So it depends upon your setup, I guess. Also as someone commented earlier the McLaren animation helps. If you're stock and U rooted there is a guide. Just search around XDA. If you're Rooted, try the aforementioned Animation Mod. Though it will only work on OxygenOS.
Click to expand...
Click to collapse
Are u suggesting animation mods help to bring about a faster finger print ??
My take : I don't think so animation has any effect. Theoretically it does not, since animation is only outside the fingerprint area.
---------- Post added at 09:11 PM ---------- Previous post was at 08:50 PM ----------
Zorbeyd said:
Which rom do you use? And how did you register your fingers? (Light levels, brightness levels)
Click to expand...
Click to collapse
9.0.5 ( not 9.0.15) OOS. Omega kernel.
Brightness level was average I guess. I dont think it matters since the sensor area is by default fully lit in high brightness mode and adjacent area are jet black while registering the finger print.
I tried dark room registering but in my case it didn't add any difference or I felt it was slower for one of my thumb . So I deleted it and re registered in my room with a tube light lit.
Did it two three times until the slower thumb became equal to other thumb.
I guess it was something in my thumb rather than lighting that made it slower.
One idea u can try is,
While registering wipe everytime before u place the finger ... I haven't done that. But dust on screen or print on screen guard is likely to interfer in registering.
And if still slow, no need to worry that others phone are good . Some people have good deep fingerprints.
I've never had an issue with mine. I did the trick (found on xda) to install the McClaren background and it to me appears to be faster than the stock background.
Another thing I've seen is if you wake up your phone and are looking at it, while pressing the fingerprint sensor area, it may appear to stutter when unlocking if you have face detection enabled also. I've tried it several times with a piece of post it note over the camera to verify that to me, appeared to be what was causing it to "stutter". If I am looking at the phone, I don't go near the fingerprint sensor. If I'm not looking at the phone, then the fingerprint sensor works lightning fast.
bladestonez said:
From my experience and experiences I have read the sensor is faster than a traditional rear one. Only issues I ever have is when my fingers are wet or dirty.
Click to expand...
Click to collapse
I concur. Sensor seems to work very well and very quickly as long as my thumb is clean and dry. If it isn't...I guess that is what the PIN is for.
No way a UD sensor beats or even comes close to a tradiotnal one for now. Traditional back fingerprint sensor in oppo f5 youth I have tested, in my frnds phone.
It instantaneous.
At first it sucked but improved over time.
Sent from my OnePlus 6T through Tapatalk

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