Twilio incident: Voice Call Audio Quality Degradation between a Subset of Twilio United States Phone Numbers and T-Mobile in United States

1. resolvedMay 13, 2026, 21:11 UTC

   The incident has been resolved and voice calls between a subset of Twilio United States Phone Numbers and T-Mobile network subscribers in the United States are operating normally.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in Twilio's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

Other services with incidents at the same time

Overlapping incidents aren't necessarily related.

• Cursor: Degraded Agent PerformanceCritical · May 12, 2026, 02:24 UTC
• Upstash: Fly.io Upstash Redis Service DistruptionCritical · May 12, 2026, 09:49 UTC
• Confluent Cloud: Elevated error rates and latency on produce and consume operations on AWS us-east-1 AZ4Major · May 8, 2026, 01:14 UTC
• Clerk: Account Portal not RedirectingMajor · May 11, 2026, 15:00 UTC
• Upstash: Fly.io Upstash Redis service distruption (FRA region)Major · May 11, 2026, 15:05 UTC
• OVHcloud: [US-EAST-VA-1][Public Cloud] - Managed Kubernetes Service Incident NotificationMajor · May 11, 2026, 15:52 UTC
• OneSignal: Dashboard & API - Partial OutageMajor · May 11, 2026, 18:19 UTC
• Grafana Cloud: SSL/TLS Connectivity IssuesMajor · May 11, 2026, 20:49 UTC
• Grafana Cloud: "Failed to Load Dashboard" ErrorsMajor · May 11, 2026, 21:38 UTC
• DigitalOcean: GradientAI: Agent Platform Playground Interaction ErrorsMajor · May 12, 2026, 10:50 UTC

How often does Twilio have incidents?

Twilio reported 500 incidents in the last 90 days, 2 of them major or critical. A typical incident lasted 5h 49m. See Twilio's uptime and incident history