A text of up to 50 characters can be displayed on the lock screen of the LG device, which is designed to display information such as email address or phone number in case the device is lost, but the text/signature on the lock screen can be freely selected.

Android 9 | LG UX 9.0
Step 1:  Open the  Settings
Step 2:  Tap on  General
Step 3:  Tap on  Lock screen & security
Step 4:  Tap on  Customize Lock screen
Step 5:  Tap on  Contact info for lost phone
Step 6:  Enter  Contact Information  and tap on  Save
  1. Open the Settings
  2. Tap on General
  3. Tap on Lock screen & security
  4. Tap on Customize Lock screen
  5. Tap on Contact info for lost phone
  6. Enter Contact Information and tap on Save

LG Instructions
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