# Voice Call Failures from Twilio Phone Numbers to Vivo Telefonica Brazil - Provider: [Twilio](https://down.guide/twilio) - Level: confirmed - Impact: Degraded - lasted 1d 2h - started 2026-07-02 16:09 UTC - Voice, Latin America - latam - id: DWN-501ef23992 - Official page: https://stspg.io/8rjf0clny2cp ## Updates from Twilio ### 2026-07-02 16:09 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to 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. ### 2026-07-02 16:09 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Vivo Telefonica 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. ### 2026-07-02 17:09 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Vivo Telefonica 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. ### 2026-07-02 17:10 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Vivo Telefonica 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. ### 2026-07-02 19:09 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Vivo Telefonica 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. ### 2026-07-02 19:10 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Vivo Telefonica 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. ### 2026-07-02 23:10 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Vivo Telefonica network subscribers in Brazil. 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. ### 2026-07-02 23:10 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Vivo Telefonica network subscribers in Brazil. 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. ### 2026-07-03 07:11 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to network subscribers in Brazil. 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. ### 2026-07-03 07:11 UTC: identified Twilio customers may be experiencing voice call failures from Twilio Phone Numbers to Vivo Telefonica network subscribers in Brazil. 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. ### 2026-07-03 18:24 UTC: resolved We have completed our investigation and determined that this event did not result in any customer impact. All systems are operating normally. --- down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by Sazabi (https://sazabi.com/?utm_source=down-guide&utm_medium=markdown).