# Vonage API: USA MMS - Delivery degradation affecting MMS traffic towards Cellcom operator

- Provider: [Vonage API](https://outages.cc/vonage.md)
- Type: Incident
- State: Resolved
- Worst impact: Degraded performance
- Started: 2026-10-26 20:59 UTC
- Resolved: 2026-10-27 21:14 UTC (lasted 24 h 15 min)
- Components: MMS North America, Global Connectivity - MMS North America
- Official update: https://stspg.io/ks4996nspt6t

## Updates from Vonage API

### resolved, 2026-10-27 21:14 UTC

This incident has been resolved.

### investigating, 2026-10-26 20:59 UTC

We have been notified by our supplier about MMS degradation impacting messages to Cellcom long-code numbers. As a result of this issue, messages and delivery receipts may be impacted. The carrier is aware of this issue and investigating the root cause. We will issue an update as soon as more information becomes available. If you have any questions, please contact api.support.vonage.com