If you want to remove a non-friend from your iPhone’s Messenger app, there are a few steps you need to take.

  1. Open the Messenger app on your iPhone and tap on the three lines in the top left corner of the screen.
  2. Select Settings from the menu that appears.
  3. Under “General,” tap on “Accounts.”
  4. Tap on the name of the person you want to remove from your list of friends.
  5. Tap on “Remove.” ..