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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 02, 2026 - Started about 1 month ago - Lasted 5 days
Official incident page

Incident Report

Summary AI Generated

Twilio customers experienced voice call audio quality degradation and silent audio issues between Twilio phone numbers and network subscribers across multiple networks in the United Kingdom over a 131-hour period. The incident affected Twilio's Voice service in the Europe region, with issues ranging from general audio quality problems to complete silent audio on calls to certain UK numbers. The incident was resolved after multiple cycles of apparent recovery followed by recurring issues, with voice calls eventually 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 05/08/2026 04:57AM

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 05/07/2026 04:53AM

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 24 hours or as soon as more information becomes available.

MONITORING about 1 month ago - at 05/06/2026 12:47PM

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 16 hours or as soon as more information becomes available.

MONITORING about 1 month ago - at 05/06/2026 04:46AM

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 8 hours or as soon as more information becomes available.

MONITORING about 1 month ago - at 05/06/2026 12:46AM

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 1 month ago - at 05/05/2026 10:44PM

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 05/05/2026 10:42AM

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 16 hours or as soon as more information becomes available.

IDENTIFIED about 1 month ago - at 05/05/2026 02:41AM

Twilio customers may be experiencing voice call silent audio from network subscribers to a Subset of Twilio United Kingdom numbers. 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 1 month ago - at 05/04/2026 10:38PM

Twilio customers may be experiencing voice call silent audio from network subscribers to a Subset of Twilio United Kingdom numbers . 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 1 month ago - at 05/04/2026 08:30PM

Twilio customers may be experiencing voice call silent audio from network subscribers to a Subset of Twilio United Kingdom numbers . 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 05/04/2026 07:23PM

Twilio customers may be experiencing voice call audio quality degradation from 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.

MONITORING about 1 month ago - at 05/04/2026 01:52PM

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 16 hours or as soon as more information becomes available.

MONITORING about 1 month ago - at 05/04/2026 05:52AM

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 8 hours or as soon as more information becomes available.

MONITORING about 1 month ago - at 05/04/2026 01:46AM

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 1 month ago - at 05/03/2026 11:45PM

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 05/03/2026 10:35AM

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 16 hours or as soon as more information becomes available.

IDENTIFIED about 1 month ago - at 05/03/2026 02:28AM

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 8 hours or as soon as more information becomes available.

IDENTIFIED about 1 month ago - at 05/02/2026 10:27PM

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 1 month ago - at 05/02/2026 08:27PM

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 05/02/2026 07:26PM

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.

MONITORING about 1 month ago - at 05/02/2026 07:06PM

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 05/02/2026 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 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 05/02/2026 06:01PM

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 1 month ago - at 05/02/2026 06:00PM

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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