Voice Call Failures, Post Dial Delay, and Silent and One-Way Audio Between a Subset of Twilio Phone Numbers and Multiple Networks in Brazil

Update timeline

1. investigating Aug 25, 2026, 01:20 PM UTC

   Twilio customers may be experiencing voice call failures, post dial delay, and silent and one-way audio between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

2. identified Aug 25, 2026, 02:21 PM UTC

   Twilio customers may be experiencing voice call failures, post dial delay, and silent and one-way audio between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil. Our team is actively investigating this issue. We will provide another update in 2 hours or as soon as more information becomes available.

3. identified Aug 25, 2026, 04:23 PM UTC

   Twilio customers may be experiencing voice call failures, post dial delay, and silent and one-way audio between a subset of Twilio Phone Numbers and network subscribers in Brazil. 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.

4. identified Aug 25, 2026, 05:24 PM UTC

   Twilio customers may be experiencing voice call failures, post dial delay, and silent and one-way audio between a subset of Twilio Phone Numbers and network subscribers in Brazil. 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.

5. identified Aug 25, 2026, 07:24 PM UTC

   Twilio customers may be experiencing voice call failures, post dial delay, and silent and one-way audio between a subset of Twilio Phone Numbers and network subscribers in Brazil. 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.

6. monitoring Aug 25, 2026, 09:40 PM UTC

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

7. monitoring Aug 25, 2026, 11:41 PM UTC

   We have observed a recovery in voice calls between a subset of Twilio Phone Numbers and network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

8. monitoring Aug 26, 2026, 03:43 AM UTC

   We have observed a recovery in voice calls between a subset of Twilio Phone Numbers and network subscribers on multiple networks in Brazil and are monitoring service stability. We will provide another update in 8 hours or as soon as more information becomes available.

9. monitoring Aug 26, 2026, 11:50 AM UTC

   We have observed a recovery in voice calls between a subset of Twilio Phone Numbers and network subscribers in Brazil and are monitoring service stability. We will provide another update in 16 hours or as soon as more information becomes available.

10. monitoring Aug 27, 2026, 03:52 AM UTC

    We have observed a recovery in voice calls between a subset of Twilio Phone Numbers and network subscribers in Brazil and are monitoring service stability. We will provide another update in 24 hours or as soon as more information becomes available.

11. resolved Aug 27, 2026, 09:52 PM UTC

    The incident has been resolved and voice calls between a subset of Twilio Phone Numbers and network subscribers on affected networks in Brazil are operating normally.