Twilio outage on 2026-08-28: Voice Call Failures and Audio Quality Degradation Between a Subset of Twilio Phone Numbers and Multiple Networks in Hong Kong

Twilio customers may be experiencing voice call failures and audio quality degradation between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Hong Kong. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.