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Outage in Twilio

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

Resolved Minor
April 30, 2026 - Started about 1 month ago - Lasted about 6 hours
Official incident page

Incident Report

Summary AI Generated

Twilio customers experienced voice call audio quality degradation between Twilio phone numbers and multiple UK network subscribers for 6.1 hours. The issue initially affected calls to Hutchison H3G network subscribers before expanding to multiple networks across the United Kingdom. The incident was resolved after the team identified the root cause and implemented a fix, with voice calls returning to normal operation.

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

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Latest Updates ( sorted recent to last )
RESOLVED about 1 month ago - at 05/01/2026 01:07AM

The incident has been resolved and voice calls between Twilio Phone Numbers and network subscribers on affected networks in the United Kingdom are operating normally.

MONITORING about 1 month ago - at 04/30/2026 11:03PM

We have observed a recovery in voice calls between Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

IDENTIFIED about 1 month ago - at 04/30/2026 09:03PM

Twilio customers may be experiencing voice call audio quality degradation between Twilio Phone Numbers and network subscribers on multiple networks in the United Kingdom. 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.

IDENTIFIED about 1 month ago - at 04/30/2026 08:03PM

Twilio customers may be experiencing voice call audio quality degradation between Twilio Phone Numbers and Hutchison H3G network subscribers in the United Kingdom. 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.

INVESTIGATING about 1 month ago - at 04/30/2026 07:06PM

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

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