Find "Options"
Press the Menu key twice.
Press Text Messages.
Press the Menu key.
Press Options.
Activate or deactivate delivery reports
Press Delivery Report to activate or deactivate delivery reports.
When the box next to the menu item is ticked (V), the function is activated.
Select validity period
Press Validity Period.
Press Max.
Choose message type
Press Sent As.
Press Text.
Save the message centre number
Press Service Centre and key in +35387699989
Select data bearer
Press Network To Send Over.
Press Circuit Switched.
Save and exit
Press the Menu key.
Press Save.
Press Disconnect.
Press the Return key to return to standby mode.