Outage in Twilio
Voice Call Failures from a Subset of Twilio Phone Numbers to T-Mobile United States
Resolved MinorIncident Report
Summary AI Generated
Twilio experienced a 12.8-hour incident where voice calls from a subset of Twilio phone numbers to T-Mobile subscribers in the United States were failing. The issue affected the Voice and North America components, with the cause identified during the incident and recovery observed in stages before full resolution. The incident was fully resolved on October 29, 2026, with voice calls confirmed to be operating normally.
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to 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.
Components affected
Twilio Voice, North AmericaTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
about 18 hours ago - at 10/29/2026 02:20PM
The incident has been resolved and voice calls from a subset of Twilio Phone Numbers to T-Mobile network subscribers in the United States are operating normally.
MONITORING
about 21 hours ago - at 10/29/2026 11:55AM
We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to T-Mobile network subscribers in the United States and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.
MONITORING
1 day ago - at 10/29/2026 07:55AM
We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to T-Mobile network subscribers in the United States and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
MONITORING
1 day ago - at 10/29/2026 05:54AM
We have observed a recovery in voice calls from a subset of Twilio Phone Numbers to 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.
IDENTIFIED
1 day ago - at 10/29/2026 04:01AM
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to 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 2 hours or as soon as more information becomes available.
IDENTIFIED
1 day ago - at 10/29/2026 02:58AM
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers 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
1 day ago - at 10/29/2026 01:45AM
We have observed a recovery in voice calls from a subset of Twilio Phone Numbers 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.
IDENTIFIED
1 day ago - at 10/29/2026 01:43AM
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers 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.
INVESTIGATING
1 day ago - at 10/29/2026 01:34AM
Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to 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.
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