SMS Delivery Delays to United States Cellular in the United States over a Subset of Shortcodes

Incident Report for Twilio

Resolved

We are no longer experiencing SMS delivery delays when sending messages to United States Cellular in the United States over a subset of shortcodes. This incident has been resolved.

Posted Jul 06, 2025 - 14:03 PDT

Update

We are continuing to experience SMS delivery delays when sending messages to United States Cellular in the United States over a subset of shortcodes. 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 Jul 06, 2025 - 11:59 PDT

Update

We are continuing to experience SMS delivery delays when sending messages to United States Cellular in the United States over a subset of shortcodes. 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 Jul 06, 2025 - 09:59 PDT

Investigating

We are experiencing SMS delivery delays when sending messages to United States Cellular in the United States over a subset of shortcodes. 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 Jul 06, 2025 - 08:59 PDT

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