Google Pixel 3a - Delete Messages

  1. From a Home screen, touch and swipe up to display all apps.
  2. Tap Messages Messages app icon.
  3. If prompted to change the default SMS app, tap NEXT > YES to confirm.
  4. From the Inbox, touch and hold a message.
    Note To select multiple messages, tap additional messages to be deleted (a checkmark will appear to the left to mark messages for deletion).
  5. Tap the Delete icon Delete icon (upper-right).
  6. Tap Delete to confirm.