With the picture-in-picture function, an app can be displayed in a floating window that remains visible over other apps, making it possible, for example, to continue watching a video while writing an SMS. The picture-in-picture function can be allowed or blocked on the LG smartphone via the respective app settings.

If the picture-in-picture button is not available in the settings, the function is not supported by the app.

Android 9 | LG UX 9.0
Step 1:  Open the  Settings
Step 2:  Tap on  General
Step 3:  Tap on  Apps & notifications
Step 4:  Tap on  Special access
Step 5:  Tap on  Picture-in-Picture
Step 6:  Tap on desired  App
Step 7:  Enable or Disable  Allow picture-in-picture
  1. Open the Settings
  2. Tap on General
  3. Tap on Apps & notifications
  4. Tap on Special access
  5. Tap on Picture-in-Picture
  6. Tap on desired App
  7. Enable or Disable Allow picture-in-picture

LG Instructions