Delivery Issue United Kingdom - Virgin Mobile

Incident Report for Sinch

Resolved

This incident has been resolved.

VMO2 have confirmed that, as their O2 SMSC was not receiving an acknowledge from their Virgin SMSC, messages towards Virgin subscribers were sent into a retry pattern.
This has resulted in multiple deliveries of the same SMS, only one DR would have been received in these instances. As such, end users may have complained about multiple SMS delivery during the period of this VMO2 incident.
Sinch have observed stable service since 22:00 UTC on 17th July. Incident closed but further feedback has been requested, by Sinch, from VMO2.

Incident Start Time: 2023-07-14 13:02 UTC
Incident End Time: 2023-07-17 22:00 UTC

Posted Jul 21, 2023 - 10:24 UTC

Update

We are continuing to monitor for any further issues.

Posted Jul 20, 2023 - 12:08 UTC

Update

We are continuing to monitor for any further issues.

Posted Jul 19, 2023 - 11:02 UTC

Monitoring

VirginMedia O2 confirmed the issue was resolved, at 22:00 UTC 17th July, by the carrier they use between their O2 and Virgin Mobile networks.
Sinch is still seeking further information from VirginMedia O2 on this incident.
DR's from the time of the incident continue to deliver to Sinch.

Posted Jul 18, 2023 - 08:19 UTC