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

Incident Report for Twilio

Resolved

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

Posted Oct 28, 2025 - 13:56 PDT

Monitoring

We are observing successful MMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America via a subset of longcodes. We will continue to monitor to ensure full service recovery. We expect to provide another update in 2 hours or as soon as more information becomes available.

Posted Oct 28, 2025 - 12:15 PDT

Update

We continue to experience MMS delivery delays when sending messages to Cingular Wireless (AT&T) in the United States of America via a 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 Oct 28, 2025 - 11:52 PDT

Investigating

We are experiencing MMS delivery delays when sending messages to Cingular Wireless (AT&T) in United States of America via a 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 Oct 28, 2025 - 10:52 PDT

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