Samsung Galaxy Note 10.1
1 Find "Settings"
Press the menu icon.
Press Messaging.
Press the menu icon.
Press Settings.
2 Turn request for delivery reports on or off
Press Delivery reports below Text message (SMS) settings to turn the function on or off.
When the box next to the menu item is ticked (V), the function is turned on.
3 Save the message centre number
Press Message Centre.
Key in +6421600600 and press OK.
4 Exit
Press the home icon to return to standby mode.