S6 Edge only works on lollipop - Galaxy S6 Edge Q&A, Help & Troubleshooting

Hello everyone,
My S6 EDGE on Lollipop:
Does not work light sensor , always set in full brightness
If I upgrade to Marshmallow or Nougat:
Light sensor gets fixed
Fingerprint / Lockscreen stops working
Wifi does not remember passwords after reboot
If I turn off Wifi I can't turn it back on unless I perform a reboot.
Testing the sensors on service menu all of them work
Tried cyanogenmod / lineage os , same problems
Do I have a defective unit although everything looks like it is a software problem
Any ideas? besides factory reset, clear cache, safe mode, etc.... all tried to no avail....
Thanks!

gabriel2007 said:
Hello everyone,
My S6 EDGE on Lollipop:
Does not work light sensor , always set in full brightness
If I upgrade to Marshmallow or Nougat:
Light sensor gets fixed
Fingerprint / Lockscreen stops working
Wifi does not remember passwords after reboot
If I turn off Wifi I can't turn it back on unless I perform a reboot.
Testing the sensors on service menu all of them work
Tried cyanogenmod / lineage os , same problems
Do I have a defective unit although everything looks like it is a software problem
Any ideas? besides factory reset, clear cache, safe mode, etc.... all tried to no avail....
Thanks!
Click to expand...
Click to collapse
I had the brightness issue once. It was always full and would flash from dim to full brightness constantly. And as i remember i flashed carhd custom rom which fixed the issue.

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Sorry for the English.
Try flashing the modem and bootloader for your specific device, then go into recovery and do a manual factory reset and see how you go. Little weird for things to be doing that. You might have damaged your device fm with downgrading and upgrading
Im having exact same problem ?

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oneplus 7t pro unresponsive screen/freezing when unlocking the phone

i just recently updated my oneplus 7t pro to 10.0.9. I noticed that sometimes I encountered freezing or unresponsive touch screen when trying to unlock my phone using finger print.
I did not encounter the issue when I am in 10.0.8.
Can you help me identify the issue?
Try:
- Resetting the fingerprints/ clear cache & data of biometrics.
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Do you have a custom ROM module/ custom kernel installed?
elmor0 said:
Try:
- Resetting the fingerprints/ clear cache & data of biometrics.
- Re-install 10.0.9
Do you have a custom ROM module/ custom kernel installed?
Click to expand...
Click to collapse
tried to re install 10.0.9 but I still encountered the freezing. I do not have any customization installed.
I noticed that phone doesnt work so smoothly after update.. any news?
Auto rotate doesnt work ok, screen display as well..
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Question AOD and fingerprint doesn't work after upgrade to Android 12

Hello,
Have global version of the phone. Yesterday have installed Android 12 firmware by OTA.
Always on display functionality doesn't work anymore - have tried all modes and on/off states. Also fingerprint scanner not showing and working on turned off screen at all. On android 11 I was able to unblock phone just using scanner. Now I must turn on screen by power button before. Is any some settings that I've missed or it bug of new firmware?
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Did try to factory reset?
0kti said:
Did try to factory reset?
Click to expand...
Click to collapse
Not yet. Have tried only reset system settings. Now am trying to discover is there any other way that full reset to fix. Have a lot of applications that should be restored and reconfigured after reset...
how could you install it on the global version? what county are you from?
Zierbeek said:
how could you install it on the global version? what county are you from?
Click to expand...
Click to collapse
russia. Just check the update section on the phone...
thanks! is it bad to flash a C version on an A version?
Mike Starkov said:
Not yet. Have tried only reset system settings. Now am trying to discover is there any other way that full reset to fix. Have a lot of applications that should be restored and reconfigured after reset...
Click to expand...
Click to collapse
hi, i have the same problems after updating the os via ota. Both a soft and hard reset were useless
Same bug after upgrading from full ota file
I've have a solution for this issue. It's not ideally - because you cannot restore the phone from backup and need to migrate all data and applications manually.
I have loaded phone in the recovery mode (turning on by power button + volume down button) and perform the wipe data operation. After reboot I've initialized the phone without restoring from backup.
AOD works correctly but the fingerprint sensor doesn't showing by default on AOD screen. I've turned off/on the Show finderprint settings and all works fine.
After that I've installed and initilized all applications from Google play.
I've installed OTA today, have no issues, Global Version, Germany.
Hi, have same problem with mine, Poland - GDPR.
Edit, AOD started working for me after formating data from recovery mode. Dont use in-android wiping.
Edit 2: AOD is working untill i log in to google...
Same issue here! Global Version - Italy
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Same problem here. Global Version - Spain
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These apps would always ask for fingerprint in previous version.
Anyone else facing this problem?
I have the same issue when I try to unlock an app with finger. The finger sensor not appears. I must power off screen and then power up for sensor appear and works

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