Lock mode is a function that temporarily disables all automatic screen lock unlocks, but when lock mode is enabled, the LG unit can only be unlocked manually using the password, PIN or pattern.

The lock mode must be re-activated each time the power is turned on. This is done by pressing and holding the power key. The "Lock" key is located at the bottom of the menu. This puts the device in sleep mode and can only be unlocked manually.

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  Secure lock settings
Step 5:  Enable or Disable  Show lockdown option
  1. Open the Settings
  2. Tap on General
  3. Tap on Lock screen & security
  4. Tap on Secure lock settings
  5. Enable or Disable Show lockdown option

LG Instructions
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