Twilio incident

Voice Call Failures from T-Mobile United States to a Subset of Twilio United States Phone Numbers

Minor Resolved View vendor source →

Twilio experienced a minor incident on August 18, 2026 affecting Voice, North America, lasting 1h 38m. The incident has been resolved; the full update timeline is below.

Started
Aug 18, 2026, 02:56 PM UTC
Resolved
Aug 18, 2026, 04:35 PM UTC
Duration
1h 38m
Detected by Pingoru
Aug 18, 2026, 02:56 PM UTC

Affected components

Voice, North America

Update timeline

  1. investigating Aug 18, 2026, 02:56 PM UTC

    Twilio customers may be experiencing voice call failures from network subscribers to Twilio United States Phone Numbers. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

  2. identified Aug 18, 2026, 03:57 PM UTC

    Twilio customers may be experiencing voice call failures from T-Mobile network subscribers in the United States to a subset of Twilio United States Phone Numbers. 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.

  3. identified Aug 18, 2026, 03:58 PM UTC

    Twilio customers may be experiencing voice call failures from T-Mobile network subscribers in the United States to a subset of Twilio United States Phone Numbers. 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.

  4. resolved Aug 18, 2026, 04:35 PM UTC

    We have completed our investigation and determined that this event did not result in any customer impact. All systems are operating normally.