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

resolved · 18 Aug 2026, 17:38

Auto-resolved by the status page: the vendor stopped reporting this incident in their feed.

identified · 18 Aug 2026, 16:58

**2026-08-18T14:56:30.062Z** — 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. **2026-08-18T15:57:12.191Z** — 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. **2026-08-18T15:58:20.063Z** — 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.

investigating · 18 Aug 2026, 15:58

**2026-08-18T14:56:30.062Z** — 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.