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I replaced the Mi 9T Pro amoled display with a new original one, but the fingerprint doesn't work. The fingerprint sensor is still working, the problem is related to the calibration. I tried using the "Activity launcher" app to calibrate the sensor, I chose "In display fingerprint" then "SPMT", but this process failed when it asked to "Calibrate, put the FLESH CHART then click next" with error "0x14 the number of bad pixel is abnormal".
I know that "FLESH FLAT" means that I need to use a mirror on the fingerprint, but what does "FLESH CHART" mean?
Thank you
Here some screenshots and the difference between the two displays: https://drive.google.com/folderview?id=1lJ0_T0kMW3kOl-2Piy8vC9VUv2cUhLeG
Hello , There are issues with the miui 12 update. Is your screen really 100% original?
sacha2506 said:
Hello , There are issues with the miui 12 update. Is your screen really 100% original?
Click to expand...
Click to collapse
I think that it's the original one, here a link https://drive.google.com/folderview?id=1lJ0_T0kMW3kOl-2Piy8vC9VUv2cUhLeG to a photo gallery with the photo comparison between the two displays.
There is an official procedure to perform the fingerprint calibration?
Thank you
according to your photos it is not the original screen but an adaptable one. the reference is not the same look carefully ...
sorry I don't know the procedure ...
sacha2506 said:
according to your photos it is not the original screen but an adaptable one. the reference is not the same look carefully ...
sorry I don't know the procedure ...
Click to expand...
Click to collapse
Thank you for your reply. I bought this spare parts on eBay. It was described as original AMOLED
About the reference, do you mean the code that is in the bottom of the screen on the gray tape?
At this point I will try to change it again... There is a shop where I can buy original spare parts? I know that this one is a good shop https://dragon-tt.com/Products.aspx?gid=95 but you need to wait some days for the shipment because they ship from China.
Thank you
I think that of your link is good however I do not know the difference between the beginning of the serial number JA and JC or JB ... Anyone know the difference or is it just a year or a place of production?
sacha2506 said:
I think that of your link is good however I do not know the difference between the beginning of the serial number JA and JC or JB ... Anyone know the difference or is it just a year or a place of production?
Click to expand...
Click to collapse
I think that I will buy a new one on dragon-tt.
Do you think that ask to the reseller for the beginning of the serial number it's important?
Thank you
Yes Il think ...
sacha2506 said:
Yes Il think ...
Click to expand...
Click to collapse
Dragon-tt give me this reply:
This item is 100% original new.
It recognize the fingerprint .
You can not start calibration process ,because you have no tool.
Only xiaomi have the tool to calibrate the finger print.
Our screen comes with JA.
I think it is not a problem.
Click to expand...
Click to collapse
it still seems weird to me. but if so then Xiaomi should be able to fix the problem with an update.
Have you tried to factory reseting the device?
Please let me know
Grazma said:
Dragon-tt give me this reply:
Click to expand...
Click to collapse
I see that there are some topics with reports of the same problem, that is: difficulties with the fingerprint scanner after replacing the broken screen of an MI 9T / K20D [PRO].
A summary of the situation:
Until MIUI 11, the MI 9T / K20D [PRO] worked normally even when their screen was replaced by non-original screens with only 5 multitouch points, sometimes described as "tft" or "oled", including the fingerprint scanner.
Most of the screens available on internet sellers are of these types, and vendors often insist that they are original. The easiest way is to check the number of multitouch points, if it is not 10, it is not original.
After upgrading to MIUI 12, the fingerprint scanner of the MI 9T / K20D [PRO] equipped with these screens no longer works, restarting the device whenever trying to register a fingerprint. This is not a calibration problem.
The only solution found so far is to replace the non-original screen with an "AMOLED" screen, with 10 multitouch points, which is either original or at least has characteristics similar enough to the original to work.
This topic has a good explanation on that subject https://forum.xda-developers.com/k20-pro/help/miui-12-fingerprint-unlock-defective-t4122135
I hope it helps
As Thoriq said, have you tried factory resetting it? i had the same problem when i replaced the screen on my cepheus with a bad quality one and that fixed it
[Solved]
rodrimax10 said:
As Thoriq said, have you tried factory resetting it? i had the same problem when i replaced the screen on my cepheus with a bad quality one and that fixed it
Click to expand...
Click to collapse
Hi guys, after reading the last update in this thread, I tryed to install a clean Global ROM on my Mi 9T Pro, and it works, but due to the cheap quality of the new AMOLED, the recognition works 1 time on 8.
I followed this guide step by step, and if you open this link from a smartphone, turn on the "Desktop Mode" otherwise you will see a blank page: https://c.mi.com/oc/miuidownload/detail?guide=2 - to follow the guide you need a Windows PC -.
If you need to unlock the device, first you will need to turn on the "Developer options", go into the "Mi Unlock status" menu, and bind the Xiaomi Account with the unlocker. Of course, you will need the Xiaomi Account password.
Ater the unlock, according to the guide that I linked before, the device will reboot, but sometimes it stops on the coloured "MIUI" logo. So after 5 minutes without any change, I turned off the device pressing the power button, and then it rebooted correctly. After the first reboot, it asked me to add again the Xiaomi Account password, because the device was already paired with an account. At this point it booted, and I turned off the device before selecting the system language, and I continued to follow the linked guide from the STEP 3.
The nice thing is that the fingerprint works again, unfortunately the bad quality of the display cannot be fixed without replacing it again.
Thank you for your help guys.
Grazma said:
[Solved]
Hi guys, after reading the last update in this thread, I tryed to install a clean Global ROM on my Mi 9T Pro, and it works, but due to the cheap quality of the new AMOLED, the recognition works 1 time on 8.
I followed this guide step by step, and if you open this link from a smartphone, turn on the "Desktop Mode" otherwise you will see a blank page: https://c.mi.com/oc/miuidownload/detail?guide=2 - to follow the guide you need a Windows PC -.
If you need to unlock the device, first you will need to turn on the "Developer options", go into the "Mi Unlock status" menu, and bind the Xiaomi Account with the unlocker. Of course, you will need the Xiaomi Account password.
Ater the unlock, according to the guide that I linked before, the device will reboot, but sometimes it stops on the coloured "MIUI" logo. So after 5 minutes without any change, I turned off the device pressing the power button, and then it rebooted correctly. After the first reboot, it asked me to add again the Xiaomi Account password, because the device was already paired with an account. At this point it booted, and I turned off the device before selecting the system language, and I continued to follow the linked guide from the STEP 3.
The nice thing is that the fingerprint works again, unfortunately the bad quality of the display cannot be fixed without replacing it again.
Thank you for your help guys.
Click to expand...
Click to collapse
DEAR SIR I HAVE THE SAME PROBLEM AND FOLLOWED your procedure but no result.
I bought an AMOLED screen manufactured by Samsung, complete with frame, supports 10 touch points, with color quality and contrast very similar to the original screen of my Mi 9T. At first it is a good display, the seller has guaranteed that it is of Original / OEM quality. Here is the link to the part I bought: https://www.aliexpress.com/item/4000156095854.html
The only problem is that biometric recognition does not work on MIUI 12! The sensor registers my fingerprint but the phone does not unlock with it. I've tried to downgrade to MIUI 11 and it didn't work either. Any solution?
same situation but the one I got is branded OLED instead of an AMOLED one. I wish there's a way to calibrate the fingerprint as I registered the same finger thrice for accuracy but it still doesn't detect properly.
ClockUpEx said:
same situation but the one I got is branded OLED instead of an AMOLED one. I wish there's a way to calibrate the fingerprint as I registered the same finger thrice for accuracy but it still doesn't detect properly.
Click to expand...
Click to collapse
You can try to follow what I have done here. But, if you didn't bought the original spare part, you will probably be unable to use the fingerprint scanner due to the bad quality of the display.
It worked either you replaced original (10 or 5 finger touch support) Theres a tricky way to make it done.
Xda user from iran n india successfull fod
Hi everyone!
I have a problem with a fingerprint scanner on my Xiaomi mi 9 lite. I use it for 9 months. Lately, I found out that the scanner doesn't work properly - unlocks only after a few attempts. Right now I can say that it unlocks 1 out of 10 tries. I use my phone with a glass and case, so there were no damages that could lead to such a problem. What was done: checking without glass (I added new fingerprints), hard reset, calibration of the scanner (passed all tests successfully), wiping data from fingerprint id. Unfortunately, the situation didn't get better. Hope, there is anyone who can give me any pieces of advice.
Thank you in advance.
Same
Hi friend. I have the same problem. My ROM is original, I don't use tempered glass, but it works really bad anyway.
Just for trying:
Change fingerprint animation, record new fingerprints pressing harder or with the tip of the finger. Worked sometimes for me.
Hello guys,
am new to Xiaomi Mi 11 and I want to share with you my opinions (not the positive ones, this is not the aim of this thread). I have Miui Global 12.0.3 rom on it.
Issues:
1. Netflix is not working fine, HDR is not working and video quality is really low. Problem is not related to my network
2. Notification center show notifications with cut content inside. No way to expand them
3. Problems downloading files through Chrome, sometimes download does not start
4. When I wear bluetooth headset, during a call the screen does not switch off
Negative:
1. Camera quality is not that great. My P20 PRO is shooting better in almost all the conditions (am talking about main camera).
2. Battery is worst than my P20 PRO
3. Fingerprint sensor is worst than my P20 PRO
4. Audio quality is worst than my P20 PRO
What do you think? You got the same issues and complaints?
Flash xiaomi.eu!
"4. Audio quality is worst than my P20 PRO"
Mate you got a broken phone , mines sounds better than my bluetooth speaker!
ralovesoc said:
Flash xiaomi.eu!
Click to expand...
Click to collapse
Can you give me some informations? Should I unlock my phone?
ralovesoc said:
"4. Audio quality is worst than my P20 PRO"
Mate you got a broken phone , mines sounds better than my bluetooth speaker!
Click to expand...
Click to collapse
Have you tried P20 pro audio with Dolby enabled? i have both of them side my side and this is not better than my P20 Pro
I am on same rom and facing some issues as well.
1.I don't use Netflix.
2. Notifications are fine
3. Battery life is good., All day with normal use.
4. Only main camera is good, I am satisfied but not amazed,I did expected better one. I have Redmi K20. Other cameras are just garbage like on some super cheap garbage phone. But I think they will be fixed with software future updates. It happened like that on my Redmi K20.
5. I turned off fingerprint sensor because I didn't like haptic feedback while unlocking with fingerprint. It was working same as on Redmi K20. Not so fast but working good. Unlock every time except when your hand are whet.
6. Audio quality is great while talking over any app. And using stereo speakers also.
I did had stereo bug few times , upper speaker stoped working few times and started by itself... It works now.
Haptics are great , I am really enjoying it.
Will write more when I remember more
Asnamus said:
I am on same rom and facing some issues as well.
1.I don't use Netflix. --> waiting for someone confirming me the issue
2. Notifications are fine --> are you using MIUI or Android Style? I have the problem with Android Style
3. Battery life is good., All day with normal use. --> Yes me too. With P20 Pro with the same usage I can reach 2 days.
4. Only main camera is good, I am satisfied but not amazed,I did expected better one. I have Redmi K20. Other cameras are just garbage like on some super cheap garbage phone. But I think they will be fixed with software future updates. It happened like that on my Redmi K20. --> Try the Macro Camera, is amazing!!! Waiting for firmware updates for main and pano camera..
5. I turned off fingerprint sensor because I didn't like haptic feedback while unlocking with fingerprint. It was working same as on Redmi K20. Not so fast but working good. Unlock every time except when your hand are whet. --> I disabled haptic feedback
6. Audio quality is great while talking over any app. And using stereo speakers also. --> I like the quality too, but not that amazing if compared to P20 Pro..
I did had stereo bug few times , upper speaker stoped working few times and started by itself... It works now.
Haptics are great , I am really enjoying it.
Will write more when I remember more
Click to expand...
Click to collapse
Xiaom.eu for Xiaomi devices best choice.
xdamami said:
Xiaom.eu for Xiaomi devices best choice.
Click to expand...
Click to collapse
yes but the phone is new and I don't want to lose my warranty
davidep85 said:
yes but the phone is new and I don't want to lose my warranty
Click to expand...
Click to collapse
You have Global one?
xdamami said:
You have Global one?
Click to expand...
Click to collapse
Yes as I wrote in the first post!
I have another issue, I can't download files from Google Chrome. what about you?
My suggestion for you would be to factory reset your device and test that problems are solved.
Second option would be to download same global rom and reinstall it cuz maybe somehow your rom is corrupted. (For this you need yo unlock bootloader and wait 168h = 7days to unlock and than flash global rom 12.0.3.0) And if still you have same problems (I would suspect that something is wrong with the device) but than download EU rom and install that one.
If that don't work than you should return your device.
My question is , did anybody install EU rom from Global ? If I am correct installation works from Chinese rom to EU because EU is based on Chinese. I am not sure you can install EU from Global without errors.
Read this article about unlocking bootloader and ruining your warranty:
Bootloader Unlocking does not Void Warranty of Xiaomi and Redmi Devices - Gizmochina
Xiaomi smartphones are popular in the developer community, thanks to the company’s policy regarding warranty against unlocking of bootloader. But the brand has now updated its policy. Thankfully, bootloader unlocks still does not void warranty of Xiaomi and Redmi devices but with some caveats...
www.gizmochina.com
davidep85 said:
I have another issue, I can't download files from Google Chrome. what about you?
Click to expand...
Click to collapse
I don't use Chrome, I removed it with adb and instead I am using Kiwi browser which have adblocker built in and dark theme also. And is light and work excellent. Also using duck duck go for search for kiwi browser.
Asnamus said:
My suggestion for you would be to factory reset your device and test that problems are solved.
Second option would be to download same global rom and reinstall it cuz maybe somehow your rom is corrupted. (For this you need yo unlock bootloader and wait 168h = 7days to unlock and than flash global rom 12.0.3.0) And if still you have same problems (I would suspect that something is wrong with the device) but than download EU rom and install that one.
If that don't work than you should return your device.
My question is , did anybody install EU rom from Global ? If I am correct installation works from Chinese rom to EU because EU is based on Chinese. I am not sure you can install EU from Global without errors.
Read this article about unlocking bootloader and ruining your warranty:
Bootloader Unlocking does not Void Warranty of Xiaomi and Redmi Devices - Gizmochina
Xiaomi smartphones are popular in the developer community, thanks to the company’s policy regarding warranty against unlocking of bootloader. But the brand has now updated its policy. Thankfully, bootloader unlocks still does not void warranty of Xiaomi and Redmi devices but with some caveats...
www.gizmochina.com
Click to expand...
Click to collapse
I already reset the phone after the last update. my phone has no hardware or corruption problems, these are just bugs.
davidep85 said:
I already reset the phone after the last update. my phone has no hardware or corruption problems, these are just bugs.
Click to expand...
Click to collapse
Install new rom and good luck
4. When I wear bluetooth headset, during a call the screen does not switch off
The biggest issue I have found on MIUI 12.0.3 global is SOT. I get around 3h30min when on 120Hz and FHD+. A big amount of the battery is drained by Chrome. Anyone got this issue?
alvaronb92 said:
The biggest issue I have found on MIUI 12.0.3 global is SOT. I get around 3h30min when on 120Hz and FHD+. A big amount of the battery is drained by Chrome. Anyone got this issue?
Click to expand...
Click to collapse
9% is not that much man, you are using screen and performances with chrome. anyway is an heavy browser
davidep85 said:
yes but the phone is new and I don't want to lose my warranty
Click to expand...
Click to collapse
You don't lose your warranty by unlock the Bootloader.
Does anyone know what is the compatibility trick behind Huawei P30 Pro fingerprint sensor?
I have got issues with mine.After screen replacement it worked fine,until the microphone stopped working at the bottom board.So i went for a new one.And there the fingerprint issue started.I cant enroll a fingerprint.
I went for another board,new sensors,new main flex.It simply does not work,recognizes it,but does not work.Calibration tools and softwares did neither work.Tried to update/reset,also unsuccessfull. Actually it worked perfectly once,read the fingerprint perfectly,but after restart did not work again.
So,i am stuck... I know in the past i have replaced screens and sensors on P30 and P30 Pro without similar issues.
Is there an trick or must i bring it to Huawei centre to pair the hardware?
Hi,
Did you find a solution for this issue yet? I'm about to replace the fingerprint sensor, but cannot find how I can calibrate the fingerprint sensor afterwards. There seems to be some software app by Huawei which can start the calibration proces but it's nowhere to be found.
Anyone?
jagermeister1 said:
Hi,
Did you find a solution for this issue yet? I'm about to replace the fingerprint sensor, but cannot find how I can calibrate the fingerprint sensor afterwards. There seems to be some software app by Huawei which can start the calibration proces but it's nowhere to be found.
Anyone?
Click to expand...
Click to collapse
Hi
I got issues on my fingerprint sensor after replacing my screen, and all i needed to do was reflashing original rom.
It works perfect after.
joaofbc said:
Hi
I got issues on my fingerprint sensor after replacing my screen, and all i needed to do was reflashing original rom.
It works perfect after.
Click to expand...
Click to collapse
Is that possible without root?
joaofbc said:
Hi
I got issues on my fingerprint sensor after replacing my screen, and all i needed to do was reflashing original rom.
It works perfect after.
Click to expand...
Click to collapse
Great for you, i will try that for sure in the near future, but can you please explain what do you mean by original rom? The one that was first on the phone when was sold? Or you used emui 12?
ivica122 said:
Great for you, i will try that for sure in the near future, but can you please explain what do you mean by original rom? The one that was first on the phone when was sold? Or you used emui 12?
Click to expand...
Click to collapse
Did you figure it out?
Well, i was waiting to get answer from joaofbc but no answer, i didn't try anything on my own, i use phone daily and didn't want to mess it, but face recognition is working fine so i don't care about fingerprint that much.
Hello
I bought Asus Rog 3 (android 12) after replacing the screen. He has this problem:
- Only the front camera works, when I try to switch to the rear camera, the camera freezes for a moment and switches back to the front camera.
However, if I turn on the google camera in the options, the rear camera works normally.
- Doesn't read fingerprints. Scanner turns on but does not scan any lines.
I thought android 12 broke and I uploaded android 11 from Asus and it's the same. After a while, it updated itself again to android 12.
I have no idea how the fault could be.
Anyone have any advice on this problem?
Are you sure the device re-assembled properly? I've replaced the display in my ROG 3 before, all worked out very smoothly. Nothing special involved beyond making sure motherboard, fingerprint reader, cameras and everything else are all connected back together correctly...
Andrologic said:
Are you sure the device re-assembled properly? I've replaced the display in my ROG 3 before, all worked out very smoothly. Nothing special involved beyond making sure motherboard, fingerprint reader, cameras and everything else are all connected back together correctly...
Click to expand...
Click to collapse
Thanks for the answer.
I was also wondering about it, to be honest, but since the rear camera works in the "google camera" mode and the white line scanner also, but it does not scan the line, the problem is probably in the software.
In fastbootd mode it displays something like this, I do not know if it is correct because it is my first Rog 3
I don't want to open it while it's possible. Therefore, I am asking if any of my honorable colleagues had this or a similar problem.
IrCio36 said:
Thanks for the answer.
I was also wondering about it, to be honest, but since the rear camera works in the "google camera" mode and the white line scanner also, but it does not scan the line, the problem is probably in the software.
In fastbootd mode it displays something like this, I do not know if it is correct because it is my first Rog 3
I don't want to open it while it's possible. Therefore, I am asking if any of my honorable colleagues had this or a similar problem.
Click to expand...
Click to collapse
The screenshot doesn't tell much. However, you won't be able to RAW flash this device from there. Check that your have correct Fastboot access from the bootloader (without navigating to above). Then do a RAW flash to one of the A10 or A11 versions that works.
Andrologic said:
The screenshot doesn't tell much. However, you won't be able to RAW flash this device from there. Check that your have correct Fastboot access from the bootloader (without navigating to above). Then do a RAW flash to one of the A10 or A11 versions that works.
Click to expand...
Click to collapse
Why should I flash in RAW format? What will this change?
Menu, które wkleiłem, to podmenu fastboot.
I downgraded the software from the Asus website to:
- Android 10 (front / rear camera is working properly, fingerprint scanner is not working)
- Android 11 (rear camera not working, fingerprint scanner not working)
- Android 12 (rear camera not working, fingerprint scanner not working)
I don't know where the problem is. I have already written to Asus about this. We'll see what they write back.
I checked the phone's serial numbers on the Asus website and everything is correct.
The phone was not unlocked and rooted. FOTA is working properly.
Just got the latest version dated 01.08.2022
The problem remained.
Hello
As I wrote above.
Asus spoke very quickly. The phone was sent to service in RMA mode. I don't know what they did, but very fast and everything works as it is supposed to.
I contacted the previous owner and it turned out that the screen was replaced on the Asus service. Guarantee until the end of October
And I was so tempted to open it
It's good that I did not do it because it is a little 16/512GB baby girl
Topic to be closed.
Regards
IrCio36 said:
Hello
As I wrote above.
Asus spoke very quickly. The phone was sent to service in RMA mode. I don't know what they did, but very fast and everything works as it is supposed to.
I contacted the previous owner and it turned out that the screen was replaced on the Asus service. Guarantee until the end of October
And I was so tempted to open it
It's good that I did not do it because it is a little 16/512GB baby girl
Topic to be closed.
Regards
Click to expand...
Click to collapse
I am having similar issue my fingerprint was not working after screen replacement but now after few months my front came stopped working it was working three days back on android 10 and 11 i updated firmware from 10 to 11 to 12 and than degraded from 12 to 11 to 10 but issue still exists my front came and whatsapp video call not working back came is working but when i try to switch to front it freezes and screen turns black until cache clears