2. Step 2: Click the Lock Screen, Password and Fingerprint buttons on the settings page.

3. Step 3: Click the advanced settings button of screen lock in the pop-up page.

4. Step 4: Enter the advanced screen lock settings page and click the screen lock signature button.

5. Step 5: Click the button behind the signature information displayed on the lock screen page to open it, then edit the signature in the signature editing column below, and then click the √ button in the upper right corner.