# Twilio: Duplicated Super SIM MT SMS Commands in Very Rare Cases

> Twilio status incident “Duplicated Super SIM MT SMS Commands in Very Rare Cases” on 2022-10-21: impact minor (vendor’s label), 2.1 h, 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/twilio/incidents/hsckc9fps6jm
Last updated: 2022-10-21T14:33:00Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2022-10-21 12:28 UTC · Resolved: 2022-10-21 14:33 UTC · Duration: 2.1 h
- Updates: 1
- [Vendor status page: https://status.twilio.com/incidents/hsckc9fps6jm](https://status.twilio.com/incidents/hsckc9fps6jm)
- [Company: Twilio](https://rewindex.com/company/twilio.md)

## Timeline of updates

- **resolved** 2022-10-21 14:33 UTC: We identified an issue where devices using Super SIM may receive duplicated MT SMS Commands. The error rate is estimated to be 0.084%. By design SMS may be delivered multiple times. For customers who are sending several Commands in a short period, devices are more likely to receive duplicates. We confirm that MT SMS Commands are billed exactly once, even when delivered multiple times. We have identified the sender(s) with the highest impact and provided a mitigation. We've proceeded ro resolve this incident.

_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 2022-10-21 12:28 UTC, resolved after 2.1 h, 1 update(s).

- Canonical URL: https://rewindex.com/company/twilio/incidents/hsckc9fps6jm
- Citation: Twilio, “Duplicated Super SIM MT SMS Commands in Very Rare Cases” (2022-10-21 12:28 UTC). Archived by Rewindex: https://rewindex.com/company/twilio/incidents/hsckc9fps6jm (CC BY 4.0).
- Markdown link: `[Twilio: Duplicated Super SIM MT SMS Commands in Very Rare Cases (2022-10-21)](https://rewindex.com/company/twilio/incidents/hsckc9fps6jm)`


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Canonical: https://rewindex.com/company/twilio/incidents/hsckc9fps6jm · Markdown: https://rewindex.com/company/twilio/incidents/hsckc9fps6jm.md · JSON: https://rewindex.com/api/v1/companies/twilio/incidents/hsckc9fps6jm · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T14:17:18.154Z