Topic

This article explains how to interpret the Delivered to handset SMS delivery status and its limitations.

Description

Delivered to handset indicates that the SMS vendor or carrier reported that the message was handed off to or delivered to the recipient device. This status does not guarantee end-user receipt or that a confirmation will be returned.

Confirmations can be missing if the message was handed off to a different phone number during routing, if the sender number used is not supported by the destination carrier, or if the confirmation response is routed to a different account or environment and therefore cannot be correlated with the original message.

Carriers or upstream providers may require multiple distinct reports of delivery failure from different contacts before initiating further investigation into delivery problems.