Xiaomi Redmi 9AT
Android 10.0
1. Find "Password"
Press Settings.
Press Passwords & security.
Press Password.
2. Create phone lock code using a pattern
Press Pattern.
Press Got it.
Slide your finger across the screen to connect at least four points and press Confirm.
3. Turn off use of phone lock code
Press Password.
Key in the current phone lock code and press Turn off screen lock.
Press OK.
4. Return to the home screen
Press the Home key to return to the home screen.