We can display our own signature or message on the lock screen of the OnePlus smartphone, which contains all kinds of information, such as the name of the owner or the e-mail address in case of loss.

The message is accessible or visible to everyone without having to enter the unlock method (PIN/password/pattern).

Android 10 | OxygenOS 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  Display
Step 3:  Tap on  Ambient display
Step 4:  Tap on  Display message
Step 5:  Enter a  d  isplay message  and tap  Save
  1. Open the Settings
  2. Tap on Display
  3. Tap on Ambient display
  4. Tap on Display message
  5. Enter a display message and tap Save

OnePlus Instructions