This event is invoked by the SMS Gateway when the
SMS is received on the destination mobile phone. The SMS delivered to handset
notification is sent from the network to the system in a separate SMS message.
This event happens some time after the
SMS delivered to network event occurs.
The time depends on when the destination mobile phone becomes available.
If the destination phone is never switched off it might never arrive.
To handle this event, the following delegate type is used:
public delegate void DeliveryEventHandler(string messageID, DateTime
And the following event is accessed:
public event DeliveryEventHandler onMessageDeliveredToHandset;