[FIXED] Iris scanner not working. - Samsung Galaxy S8 Guides, News, & Discussion

Hi.
I've seen on many s8 devices that Iris scanner stopped working at above 90%.
So here is very simple fix for this...
Just go to a dark room having very low light conditions and then try to register your iris.
It'll most probably fix your iris scanning issues.
Just give it a try with hope.
?

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[Q] Lava Iris 504q shows error if SIM not present in a dual sim phone???

Hi,
Just bought a Lava Iris 504q on 14th August. It is a Dual SIM Phone though I use only 1 Sim right now. Now when I start the phone, it ALWAYS says “Slot 2: No SIM card detected″ message in notification bar. But why give notification for the obvious as it is very irritating. I had Karbonn A21(beautiful phone BTW) and it never showed any such message with same setup(dual sim phone, using single sim). Can you tell me how to switch this “Slot 2: No SIM card detected″ msg off?
power2top said:
Hi,
Just bought a Lava Iris 504q on 14th August. It is a Dual SIM Phone though I use only 1 Sim right now. Now when I start the phone, it ALWAYS says “Slot 2: No SIM card detected″ message in notification bar. But why give notification for the obvious as it is very irritating. I had Karbonn A21(beautiful phone BTW) and it never showed any such message with same setup(dual sim phone, using single sim). Can you tell me how to switch this “Slot 2: No SIM card detected″ msg off?
Click to expand...
Click to collapse
Saw some online reviews on youtube. This seems to be a problem with this phone atleast. Not sure if other phones also display this message on startup. But for sure Karbonn A21 did not show any message if no sim is present. Another problem am facing is with the proximity sensor. Suddenly today it is behaving erratically. Have to press on the top near the front camera to get it working else as soon as u dial a number the screen blanks off even though you have not moved the phone to ur ears. Saw some other users on FB having the same problem. Definately cheap quality parts in this phone anyone else facing this proximity sensor problems? Unf. there is no Proximity sensor calibration option in settings unline Karbonn A21. How do you calibrate proximity sensor in JB 4.2.1??
power2top said:
Saw some online reviews on youtube. This seems to be a problem with this phone atleast. Not sure if other phones also display this message on startup. But for sure Karbonn A21 did not show any message if no sim is present. Another problem am facing is with the proximity sensor. Suddenly today it is behaving erratically. Have to press on the top near the front camera to get it working else as soon as u dial a number the screen blanks off even though you have not moved the phone to ur ears. Saw some other users on FB having the same problem. Definately cheap quality parts in this phone anyone else facing this proximity sensor problems? Unf. there is no Proximity sensor calibration option in settings unline Karbonn A21. How do you calibrate proximity sensor in JB 4.2.1??
Click to expand...
Click to collapse
Proximity sensors seem to be faulty or maybe due to cheap quality screen protectors pre-applied with lava iris 504q, proximity sensors always show 0cm in AndroSensors app(good app BTW). It means that proximity sensor is detecting something OR faulty proximity sensor I saw some other 504q users also facing this problem. For those not knowing, temp. solution it to press the top right region which brings back PS temp. so it will help cancel a call or type a number since otherwise, screen blanks out(remember proximity thinks something is near by so blanks out the screen). Lava Iris 504q is just not up to the mark. Crap quality. Karbonn, Micromaxx Jai Ho!! Really.
i had the same problem few days ago but now its gone... i guess its because i changed my screen protector.
---------- Post added at 02:27 AM ---------- Previous post was at 02:22 AM ----------
power2top said:
Hi,
Just bought a Lava Iris 504q on 14th August. It is a Dual SIM Phone though I use only 1 Sim right now. Now when I start the phone, it ALWAYS says “Slot 2: No SIM card detected″ message in notification bar. But why give notification for the obvious as it is very irritating. I had Karbonn A21(beautiful phone BTW) and it never showed any such message with same setup(dual sim phone, using single sim). Can you tell me how to switch this “Slot 2: No SIM card detected″ msg off?
Click to expand...
Click to collapse
there is no option to turn off the notification rather than just removing it by swiping everytime. but u can hide unused sim indicator by using gravity box in xposed framework.
I am also facing display problem on call..
Hi,
I am using LAVA 504Q for 3 weeks now.
I was using Moto Defy + earlier, this LAVA phone seems to have too many annoying bugs, most annoying for me is
1.Display off during call which prevents me from using phone to seek any info available in phone when on call but presume problem would be because of proximity sensor..
2. No customization in LED color.
Have you resolved your issue, pls let me know if you have any info on how to handle this problem
theprozaic said:
i had the same problem few days ago but now its gone... i guess its because i changed my screen protector.
---------- Post added at 02:27 AM ---------- Previous post was at 02:22 AM ----------
there is no option to turn off the notification rather than just removing it by swiping everytime. but u can hide unused sim indicator by using gravity box in xposed framework.
Click to expand...
Click to collapse
---------- Post added at 01:45 PM ---------- Previous post was at 01:40 PM ----------
Hi,
I am using LAVA 504Q for 3 weeks now.
I was using Moto Defy + earlier, this LAVA phone seems to have too many annoying bugs, most annoying for me is
1.Display off during call which prevents me from using phone to seek any info available in phone when on call but presume problem would be because of proximity sensor..
2. No customization in LED color.
Have you resolved your issue, pls let me know if you have any info on how to handle this problem
power2top said:
Proximity sensors seem to be faulty or maybe due to cheap quality screen protectors pre-applied with lava iris 504q, proximity sensors always show 0cm in AndroSensors app(good app BTW). It means that proximity sensor is detecting something OR faulty proximity sensor I saw some other 504q users also facing this problem. For those not knowing, temp. solution it to press the top right region which brings back PS temp. so it will help cancel a call or type a number since otherwise, screen blanks out(remember proximity thinks something is near by so blanks out the screen). Lava Iris 504q is just not up to the mark. Crap quality. Karbonn, Micromaxx Jai Ho!! Really.
Click to expand...
Click to collapse
Icon to toggle between front and rear cameras disappeared on Lava 504q
Hi Guys,
Please help me out. On my lava 504q, Icon to toggle between front and rear cameras has suddenly disappeared. The only camera that's working is the rear one, and there's no option for switching it, i just realized this problem today, but it seems there's no problem like this a few days ago, if somebody can help me, it'll be greatly appreciated
I did try with video calling but only rear camera is getting activated. I could not find single way to start front camera of my mobile. XDA developer please help me on this
Thanks,
Ashish

Galaxy S8+ iris scanner problems

Hi everyone !
I just got my Samsung Galaxy S8+, which is an amazing phone for me. It really has everything I always wanted
I just see that the iris scanner has a strange behaviour in my case : In low light conditions (example at the bed) if I try to unlock the device first time It works perfectly and It's also fast. Second time also.
From the third time, It won't detect my iris. And I try to move the phone in every way, closer, up, down, etc... It's not giving me any particular error but It simply won't recognize my iris.
If I just lock the device and wait a minute It works perfectly again.
Of course I've tried to re-register my iris million times (I've noticed that in my case It doesn't register them in low light conditions), but nothing, the problem persists.
I've also clean the front sensors and IR light.
Anyone else is experiencing this problem ? It's a bit weird.
Thanks in advance !
I could be wrong, but could it have something to do with your pupil expanding in the dark? The first couple of times that you scan your eye hasn't gotten used to the dark yet, but later your pupil has expanded in the dark so much, that the scanning fails. Because when your pupil expands, the iris shrinks, and the scanner can't get a proper reading from a smaller surface area
I had the same exact problem in the dark too, and it only appeared after I had been in the dark for a while, and for me at least I think this is the case
galaxyYtester said:
I could be wrong, but could it have something to do with your pupil expanding in the dark? The first couple of times that you scan your eye hasn't gotten used to the dark yet, but later your pupil has expanded in the dark so much, that the scanning fails. Because when your pupil expands, the iris shrinks, and the scanner can't get a proper reading from a smaller surface area
I had the same exact problem in the dark too, and it only appeared after I had been in the dark for a while, and for me at least I think this is the case
Click to expand...
Click to collapse
Nice, this could be the problem
I don't have the exact same issue, but it's kinda related to the iris scanner. My phone will only prompt to unlock it (Iris or PIN) first thing in the morning...every other time after that it can be unlocked with just a swipe of the screen. How do I get it to prompt every time? I've checked the settings and it's set to lock after 5 sec of the screen being off.
Mine always takes several seconds to recognize irises at first (sometime doesn't completely) but it works perfectly at second times, not sure what's wrong with it.

camera guideline view not working on iris scanner

The camera guideline view after I swipe the home screen to unlock the phone using iris scanner, has disappeared. Iris scanner is working properly. But there is nothing what we see in the top of the screen when we use iris scanner. Also smart stay is not working. I can see my face in face recognition. Also front camera is working perfectly.
My phone had a mild fall on soil. I am not sure but guessing that the problem started after the fall. There is not any other scratch or problem on the phone.

Intelligent scan (likes) on S8/S8+/N8/N8+ Magisk | Root

Hi everyone, I'm Alex, I found this easy way to have an intelligent scan like s9 (face recognition and iris scan at the same time)
What you need
-root (magisk)
-an iris scanner
Installation
-First open magisk and search for "Google face unlock"
-reboot
-go to settings > smart lock > add face
- deactivate stock Samsung face recognition
-then register an iris scan
-set iris scanner to start without swipe (if you want)
Now try to unlock your phone whit iris and then whit Eyes closed.
Is normal that iris scanner will display "iris don't found icon" that mean face unlock recognize your face before iris but try to swipe up and the phone will unlock.
Now you can unlock your phone in low light conditions and high light conditions:good:
-protip : whit autoinput (app in PlayStore) whit keyguard option will unlock without swipe whit facelock
-Alles sry my bad English and if I post it in wrong
You can install AutoInput from play store , you can watch an add a day to use free everyday or u can pay 2 dollars for it to have it always. It has an option called auto dismiss keyguard and it will unlock the phone without swiping in the moment that it recognizes your face
The method seem to work but let me explain here what exactly happens, the google face unlock barely lets the phone to scan your irises and uses the phones camera to scan your face almost within a second(maybe even less then a second, i havnt used a stopwatch) after the iris scanner turns on giving iris scanner almost no time at all to scan your irises and we all know that iris scanning is not that fast. So essentially by using this method you are using googles face scan only. thats not how samsung implements intelligent scan and also this method requires an extra app to work properly(autoinput). So its better to use samsung's face scanning tech rather than google's as iris scanner aint working any way if you want to go the face unlock way.
*deleted*

Reboot Fingerprint Module without Restarting

Hello there,
So my Xperia 5 lately has fingerprint scanner issue that won't respond to my fingerprints (on fingerprint sensor test it says 'Sensor Not OK'). This issue can be solved by restarting the phone (it's simple tips but take a lot of time for me). Does anyone know how to fix/reboot the fingerprint service on system without restarting the phone? Thanks
Regards
I had same issue. But after couple weeks with this problem my fingerprint scanner broke permanently. I dont think there is a solution for that. Tried to ask in many places.
respublikamroja said:
I had same issue. But after couple weeks with this problem my fingerprint scanner broke permanently. I dont think there is a solution for that. Tried to ask in many places.
Click to expand...
Click to collapse
Does the Fingerprint Manager menu disappear from the setting? If not, your fingerprint scanner still has a chance to work again. Try to restart the device again after several weeks.
alvathoni said:
Does the Fingerprint Manager menu disappear from the setting? If not, your fingerprint scanner still has a chance to work again. Try to restart the device again after several weeks.
Click to expand...
Click to collapse
Thx for Your advice but it is not true. Sony had problem with fingerprint sensor in Xperia 5 MK1
Xperia 5 Fingerprint Manager missing from settings
Hi Recently I've encountered problems with my fingerprint manager. Since the update it has completely gone from my settings menu on my Xperia 5. I spoke to someone from the team and they suggested backing up my phone and software repairing my phone. This didn't help one bit. And also erased...
community.sony.co.uk
I tried restart phone after several weeks. I have fingerprint manager in phone but sensor it is not working.

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