# Twilio: Incident updated: Voice Call Failures from a Subset of Twilio Phone Numbers to T-Mobile United States

> Incident updated: Voice Call Failures from a Subset of Twilio Phone Numbers to T-Mobile United States. Detected 2026-10-29 by Rewindex: what changed on Twilio’s status page, with the before/after diff.

Canonical: https://rewindex.com/change/r966881d222c8af
Last updated: 2026-10-29T04:03:47Z

**Summary:** _summary pending_
- Kind: Incident update · Label: Normal progress (rule)
- Changed: 2026-10-29 04:03 UTC · Detected: 2026-10-29 04:03 UTC
- [Source: https://status.twilio.com/incidents/w874yx5qwkqc](https://status.twilio.com/incidents/w874yx5qwkqc)
- [Company: Twilio](https://rewindex.com/company/twilio.md)
- Versions: before incident\_version:125/w874yx5qwkqc@ce25a95c335b → after incident\_version:125/w874yx5qwkqc@21cf83184667
- Change 2 of 4 for this incident

Incident page (full timeline): [Voice Call Failures from a Subset of Twilio Phone Numbers to T-Mobile United States](https://rewindex.com/company/twilio/incidents/w874yx5qwkqc.md)
## What changed

**1. Added: Update** (identified) · 2026-10-29 04:01 UTC

```diff
+ Twilio customers may be experiencing voice call failures from a subset of Twilio Phone Numbers to network subscribers in the United States. 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.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-29 03:13 UTC | [Incident updated: Voice Call Failures from a Subset of Twilio Phone Numbers to T-Mobile United States](https://rewindex.com/change/r84b00091849f14.md) | Normal progress |
| 2026-10-29 04:03 UTC | Incident updated: Voice Call Failures from a Subset of Twilio Phone Numbers to T-Mobile United States (this change) | Normal progress |
| 2026-10-29 06:03 UTC | [Incident updated: Voice Call Failures from a Subset of Twilio Phone Numbers to T-Mobile United States](https://rewindex.com/change/r26cbc0b1112d56.md) | Normal progress |
| 2026-10-29 08:03 UTC | [Incident updated: Voice Call Failures from a Subset of Twilio Phone Numbers to T-Mobile United States](https://rewindex.com/change/rd06928bc5f1ff1.md) | Normal progress |

Previous: [change](https://rewindex.com/change/r84b00091849f14.md) · Next: [change](https://rewindex.com/change/r26cbc0b1112d56.md) · All Twilio changes: [timeline](https://rewindex.com/company/twilio/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/r966881d222c8af · Markdown: https://rewindex.com/change/r966881d222c8af.md · JSON: https://rewindex.com/api/v1/changes/r966881d222c8af · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-29T11:14:29.169Z