SMS & MMS Delivery Delays to Cingular Wireless (AT&T) in United States of America

Incident Report for Twilio

Resolved

We are no longer experiencing SMS delivery when sending messages to Cingular Wireless (AT&T) in United States of America. This incident has been resolved.

Posted Jan 19, 2026 - 11:29 PST

Monitoring

We are observing recovery in SMS delivery when sending messages to Cingular Wireless (AT&T) in United States of America. . We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Jan 19, 2026 - 09:38 PST

Update

We are still experiencing SMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

Posted Jan 19, 2026 - 06:37 PST

Update

We continue to experience SMS & MMS Delivery Delays to Cingular Wireless (AT&T) in United States of America. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Jan 19, 2026 - 04:39 PST

Investigating

We are experiencing SMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

Posted Jan 19, 2026 - 03:39 PST

This incident affected: CARRIER NETWORK (SMS Long Code, North America, MMS Long Code, North America).