I switched my phone off last night and left it on charge but when I switched on its asked me for system UI password which I have never had ..only used 4digit numbers ..but it says 4 characters and 1 letter which I have used anybody know how i can get password..cant even unlock my phone
At some point you or someone who had access to your phone created a password. If you have forgotten this then you're screwed. As far as I know, a factory reset is the way forward. Anyway, wait for others to post as I could be wrong!
I have the same problem with my S20. Can you help me with contact information (phone or mail) of Samsung support?