[of course that should say 'not' instead of 'now' 😊 ]
I turned off my lock code before upgrading to v21. However I can't seem to change the lock code now, and even the default 12345 doesn't work.
I still have access to my phone, because the code is turned off, but if I try to enter 12345 as the lock code when doing a factory reset it always says 'code error'.
I get the same thing when trying to change the lock code - it allows me to enter the old code, and enter the new ones, but then says code error, and eventually has a message saying 'incorrect code entered 5 times, code will unblock in 5 minutes."
Any ideas?