How to set the lock screen signature 1 in Redmi k30 Extreme Commemorative Edition? Open the phone settings and click the lock screen.
2. Select the lock screen time style.
3. Click the lock screen to sign again.
4. To edit the signature to be written, turn on the switch that displays the signature on the screen, and then click OK.
This paper takes Redmi k30 Extreme Commemorative Edition as an example and applies it to MIUI 12 system.