Twilio incident
SMS Delivery Failures From a Subset of Twilio Short Codes to T-Mobile United States
Twilio experienced a minor incident on September 25, 2026 affecting SMS Short Code, North America, lasting 2h 23m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Sep 25, 2026, 06:11 PM UTC
Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- identified Sep 25, 2026, 06:21 PM UTC
Twilio customers may be experiencing SMS delivery failures from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.
- monitoring Sep 25, 2026, 06:34 PM UTC
We have observed a recovery in SMS delivery from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- resolved Sep 25, 2026, 08:35 PM UTC
The incident has been resolved and SMS delivery from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States is operating normally.