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Outage in Twilio

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

Resolved Minor
May 01, 2026 - Started about 21 hours ago - Lasted about 11 hours
Official incident page

Incident Report

Summary AI Generated

Twilio experienced voice call audio quality degradation affecting calls between Twilio phone numbers and subscribers on multiple networks in the United Kingdom for 10.5 hours. The issue impacted Twilio's Voice service in the Europe region, causing poor audio quality during calls. Twilio identified the root cause and resolved the incident, 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 11 hours ago - at 05/02/2026 04:50AM

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 13 hours ago - at 05/02/2026 02:58AM

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 4 hours or as soon as more information becomes available.

MONITORING about 15 hours ago - at 05/02/2026 12:57AM

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 18 hours ago - at 05/01/2026 09:33PM

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 4 hours or as soon as more information becomes available.

IDENTIFIED about 20 hours ago - at 05/01/2026 07:33PM

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 21 hours ago - at 05/01/2026 06:32PM

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 1 hour or as soon as more information becomes available.

INVESTIGATING about 21 hours ago - at 05/01/2026 06:20PM

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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