I have a Xiaomi Mi5 with Oreo (MIUI Global Stable 10.2.2) and have a major problem with the fingerprint unlock function. I have no problem saving my fingerprints to the phone in the Lockscreen Settings. Usually I am able to unlock the phone and those apps requiring my fingerprints straight away. However after a short period the scan recognises my prints about only about 10%of the time. I am therefore dependent on the PIN. I have taken the usual steps, deleting and re-entering my fingerprints, turning off the screen lock and then setting up the PIN again and once more enrolling my fingerprints, wiping the device's cache. I have tried different fingers I have even factory reset the device.
This problem began about 2 weeks ago. Previous to that I used it for several months without a major problem with the fingerprint scanner (about 90% success rate). I do not believe this problem is due to dirty, wet or scarred fingers. The Home button (the scanner is in the Home button) looks undamaged. I did a hardware test which gave the scanner a pass. Attached are screenshots for the test.
I have looked on the web and the only possible solutions are flashing a new ROM or involve coding amendments. I am not comfortable with any of these.
I should point out there has been no MIUI version update for several months. Also I have had this problem with other Xiaomi phones - the fingerprint unlock works fine for a while then breaks down and after a while weeks perhaps will start working again. This was not so important as I seldom used those phones. However the Mi5 is my regular everyday phone and I need the fingerprint unlock to work.
I would appreciate any advice that would help.
This problem began about 2 weeks ago. Previous to that I used it for several months without a major problem with the fingerprint scanner (about 90% success rate). I do not believe this problem is due to dirty, wet or scarred fingers. The Home button (the scanner is in the Home button) looks undamaged. I did a hardware test which gave the scanner a pass. Attached are screenshots for the test.
I have looked on the web and the only possible solutions are flashing a new ROM or involve coding amendments. I am not comfortable with any of these.
I should point out there has been no MIUI version update for several months. Also I have had this problem with other Xiaomi phones - the fingerprint unlock works fine for a while then breaks down and after a while weeks perhaps will start working again. This was not so important as I seldom used those phones. However the Mi5 is my regular everyday phone and I need the fingerprint unlock to work.
I would appreciate any advice that would help.