# Delivery Issue - SMS Verification - China

- Provider: [Sinch](https://down.guide/providers/sinch)
- Confidence: Confirmed
- Impact: Degraded
- lasted 3d 23h
- started 2026-11-06 05:05 UTC
- SMS Verification
- id: DWN-d5c440c394
- Official page: https://stspg.io/7hk732n2lq72

## Summary
Sinch says it is investigating delivery issues towards China for SMS Verification traffic, which started 2026-11-06 02:57 UTC and are causing delayed MTs, failed MTs, and missing or late delivery receipts. As of its latest update on 2026-11-10 01:08 UTC, the incident is still under investigation.

_Written by anthropic/claude-haiku-5.5 from Sinch's own updates._

## Updates from Sinch
### 2026-11-06 05:05 UTC: investigating
We are currently observing delivery issues towards China for SMS Verification traffic.
Incident Start Time: 2026-11-06 02:57 UTC
Impact: Delayed MTs/Failed MTs/Missing delivery receipts/Late delivery receipts
We will update as soon as we have more information.
If you have any questions, please contact support@sinch.com.

### 2026-11-06 07:01 UTC: investigating
We are continuing to investigate this issue.

### 2026-11-06 10:03 UTC: investigating
We are continuing to investigate this issue.

### 2026-11-06 15:13 UTC: investigating
We are continuing to investigate this issue.

### 2026-11-07 00:02 UTC: investigating
We are continuing to investigate this issue.

### 2026-11-08 01:01 UTC: investigating
We are continuing to investigate this issue.

### 2026-11-09 00:53 UTC: investigating
We are continuing to investigate this issue.

### 2026-11-10 01:08 UTC: investigating
We are continuing to investigate this issue.

### 2026-11-10 04:50 UTC: resolved
This incident has been resolved.
Incident Start Time: 2026-11-06 02:57 UTC
Incident End Time: 2026-11-10 02:00 UTC

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