Same here since update on 9 April.
I get same message as you.
I deleted my fingerprint data but constantly get the 'fingerprint sensor calibration needed' message.
I have just tried 'wipe cache partition' but no difference.
I was told by Samsung that I'd have to send my phone to them.
I guess they'll factory reset it?
Why can't they just fix this problem "over air"?
... View more