Twilio - Voice Call Audio Quality Degradation Between Twilio Phone Numbers and Multiple Networks in United Kingdom

Update timeline

1. investigating May 01, 2026, 06:24 PM UTC

   We have detected potential service disruption through our monitoring systems and are actively investigating. A detailed assessment of the impact and affected services will be provided within the next 30 minutes.

2. investigating May 01, 2026, 06:26 PM UTC

   Twilio customers may be experiencing voice call audio quality degradation between Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom. Twilio team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

3. investigating May 01, 2026, 06:27 PM UTC

   We are continuing to investigate this issue.

4. identified May 01, 2026, 09:16 PM UTC

   Twilio customers may be experiencing voice call audio quality degradation between Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom.Twilio team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

5. identified May 01, 2026, 09:48 PM UTC

   Twilio customers may be experiencing voice call audio quality degradation between Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom. Twilio team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

6. resolved May 02, 2026, 04:52 AM UTC

   Following comprehensive monitoring, we can confirm that the incident has been fully resolved and all services have returned to normal operation.