# Twilio: Voice Call Audio Quality Degradation between a Subset of Twilio United States Phone Numbers and T-Mobile in United States

> Twilio status incident “Voice Call Audio Quality Degradation between a Subset of Twilio United States Phone Numbers and T-Mobile in United States” on 2026-05-11: impact minor (vendor’s label), 2 d, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/twilio/incidents/l7jwqcvb7v33
Last updated: 2026-05-13T21:11:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-05-11 16:04 UTC · Resolved: 2026-05-13 21:11 UTC · Duration: 2 d
- Updates: 1
- [Vendor status page: https://status.twilio.com/incidents/l7jwqcvb7v33](https://status.twilio.com/incidents/l7jwqcvb7v33)
- [Company: Twilio](https://rewindex.com/company/twilio.md)

## Timeline of updates

- **resolved** 2026-05-13 21:11 UTC: The incident has been resolved and voice calls between a subset of Twilio United States Phone Numbers and T-Mobile network subscribers in the United States are operating normally.

_From the vendor’s published history: only the final update text is available for incidents before Rewindex began polling this page._

## Cite this

Status incident (vendor impact label: minor) posted by Twilio, started 2026-05-11 16:04 UTC, resolved after 2 d, 1 update(s).

- Canonical URL: https://rewindex.com/company/twilio/incidents/l7jwqcvb7v33
- Citation: Twilio, “Voice Call Audio Quality Degradation between a Subset of Twilio United States Phone Numbers and T-Mobile in United States” (2026-05-11 16:04 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/incidents/l7jwqcvb7v33 (CC BY 4.0).
- Markdown link: `[Twilio: Voice Call Audio Quality Degradation between a Subset of Twilio United States Phone Numbers and T-Mobile in United States (2026-05-11)](https://rewindex.com/company/twilio/incidents/l7jwqcvb7v33)`


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Canonical: https://rewindex.com/company/twilio/incidents/l7jwqcvb7v33 · Markdown: https://rewindex.com/company/twilio/incidents/l7jwqcvb7v33.md · JSON: https://rewindex.com/api/v1/companies/twilio/incidents/l7jwqcvb7v33 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T13:45:06.096Z