Delivery Issue United States - AT&T

Incident Report for Sinch

Resolved

This incident has been resolved.

Estimated Incident Start Time: 2026-05-06 14:00 UTC
Incident End Time: 2026-05-07 21:50 UTC

Posted May 07, 2026 - 22:39 UTC

Monitoring

A fix has been implemented and we are monitoring the results.

Posted May 07, 2026 - 21:52 UTC

Update

We are continuing to investigate this issue.

Posted May 07, 2026 - 19:04 UTC

Investigating

We are currently observing delivery issues towards United States - AT&T

Estimated Incident Start Time: 2026-05-06 14:00 UTC

Impact: Delayed delivery for concatenated 10DLC MT messages submitted towards AT&T US.

We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.

Posted May 07, 2026 - 16:58 UTC

This incident affected: External Connectivity (SMS - US - 10DLC).