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

Incident Report for Twilio

Resolved

We are no longer experiencing MMS delivery delays when sending messages to Cingular Wireless (AT&T) in the United States of America via a subset of long codes. This incident has been resolved.

Posted Sep 30, 2025 - 21:11 PDT

Monitoring

We are observing recovery in MMS delivery when sending messages to Cingular Wireless (AT&T) in the United States of America via a subset of long codes. 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 Sep 30, 2025 - 19:12 PDT

Update

We are continuing to experience MMS delivery delays when sending messages to Cingular Wireless (AT&T) in the United States of America via Subset of Longcodes. 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 Sep 30, 2025 - 18:26 PDT

Investigating

We are experiencing MMS Delivery Delays to Cingular Wireless (AT&T) in United States of America 311-180 via Subset of Longcodes. 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 Sep 30, 2025 - 17:29 PDT

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