Touch ID not working

[Jp2001]

Samsung galaxy A51, no issues with the phone up until I installed the latest update, now the Touch ID wont work. tried resetting the phone and still nothing.

[BandOfBrothers]

When you say tried resetting does that mean a full factory reset  ?

Do you have a screen protector fitted ?

@Jp2001 

[Jp2001]

Not a factory reset no, was more hoping there would be steps I could take before that. I don't have a screen protector, its telling me that the hardware is unavailable.

[BandOfBrothers]

Ok @Jp2001 

I appreciate a factory reset is a last resort.

If a wipe of the phone's system cache partition files do not work as mentioned by @Anonymous User 

> https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too. 

And > https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ turns off downloaded apps and themes etc which may highlight an app or theme that's causing conflict. 

Then maybe a Samsung Experience Store or Samsung Service Centre can assist ?