SMS and MMS Delivery Delays to T-Mobile Network in the US

Incident Report for Twilio

Resolved

We are no longer experiencing SMS and MMS Delivery delays to T-Mobile Network in the US. This incident has been resolved.

Posted Nov 19, 2025 - 14:12 PST

Update

We are observing recovery with SMS and MMS Delivery delays to T-Mobile Network in the US. 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 Nov 19, 2025 - 12:28 PST

Update

We are experiencing SMS and MMS Delivery delays to T-Mobile Network in the US. 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 Nov 19, 2025 - 11:11 PST

Monitoring

We are observing recovery from the SMS and MMS Delivery delays to T-Mobile Network in the US. We will continue to monitor the next top of the hour traffic to ensure full service recovery. We expect to provide another update in 4 hours or as soon as more information becomes available.

Posted Nov 19, 2025 - 10:26 PST

Update

We are continuing to investigate this issue.

Posted Nov 19, 2025 - 09:46 PST

Update

We are experiencing SMS and MMS Delivery delays to T-Mobile Network in the US. 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 Nov 19, 2025 - 09:10 PST

Investigating

T-Mobile has notified us that their planned maintenance window has been extended. As a result, message processing capacity is reduced, which may cause delays during peak periods—particularly at the top of the hour. While we expect the overall impact to be minimal, we are actively monitoring the situation and making adjustments as needed. We will provide another update in 1 hour or sooner if additional information becomes available.

Posted Nov 19, 2025 - 08:12 PST

This incident affected: CARRIER NETWORK (SMS Long Code, North America, MMS Long Code, North America, SMS Short Code, North America, MMS Short Code, North America, SMS Toll-Free, North America, MMS Toll-Free, North America) and ZIPWHIP MESSAGING (SMS Long Code, North America, MMS Long Code, North America, SMS Toll-Free, North America, MMS Toll-Free, North America).