Turn Message Delivery Confirmation Setting On / Off - HTC One® (M8) for Windows

  1. From the Start screen, swipe left to display the Apps list.
    Note Alternatively, tap All apps Right arrow icon (located in the lower-right; may require scrolling to the bottom of the Start screen).
  2. Tap Messaging.
  3. Tap More More icon (located in the lower-right).
  4. Tap settings.
  5. From the "SMS delivery confirmation" section, tap the On/Off switch.
    On Switch On icon
    Delivery confirmation is enabled.
    Off Switch Off icon
    Delivery confirmation is disabled.