10DLC Message Failures to T-Mobile Network in US

Incident Report for Twilio

Resolved

We are no longer experiencing SMS delivery failures sending from a subset of A2P 10DLC numbers to the T-Mobile network in the United States. This incident has been resolved.

Posted Mar 02, 2022 - 16:31 PST

Monitoring

We have started seeing recovery for SMS delivery to the T-Mobile network. We will continue to monitor to ensure a full recovery. We expect to provide another update in 30 minutes or as soon as more information becomes available.

Posted Mar 02, 2022 - 16:07 PST

Update

We are continuing to investigate this issue.

Posted Mar 02, 2022 - 15:32 PST

Update

We are experiencing SMS delivery failures sending from a subset of A2P 10DLC numbers to the T-Mobile network in the United States. Our engineers are working to resolve the issue. We expect to provide another update in 1 hour or as soon as more information becomes available.

Posted Mar 02, 2022 - 15:29 PST

Investigating

Our monitoring systems have detected a potential issue with a small set of T-Mobile A2P phone numbers. Our engineering team has been alerted and is actively investigating. We will update as soon as we have more information.

Posted Mar 02, 2022 - 15:09 PST

This incident affected: PROGRAMMABLE MESSAGING (SMS).