Pixel™, Phone by Google - Set Default Messaging App

  1. From a Home screen, touch and swipe up to display all apps.
  2. Navigate: Settings Settings app icon > Apps & notifications Apps & notifications icon.
  3. Tap Default apps.
  4. Tap SMS app.
  5. Tap the desired SMS app.
    Note Setting an SMS app as default disables other messaging apps and their features.
  6. Tap OK.