SMS Delivery Delays and Failures to China Unicom

Incident Report for Twilio

Resolved

We are no longer experiencing delivery failures to China Unicom. This incident has been resolved.

Posted Nov 25, 2020 - 04:45 PST

Monitoring

We are observing successful SMS delivery to China Unicom for the last 60 minutes. We will continue to monitor to ensure full service recovery. We expect to provide another update in 2 hours or as soon as more information becomes available.

Posted Nov 25, 2020 - 03:11 PST

Update

We are still experiencing SMS delivery delays and failures when sending messages to China Unicom. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hour or as soon as more information becomes available.

Posted Nov 25, 2020 - 01:11 PST

Update

We are continuing to investigate this issue.

Posted Nov 25, 2020 - 00:15 PST

Update

We are experiencing SMS delivery delays and failures when sending messages to China Unicom. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

Posted Nov 25, 2020 - 00:13 PST

Investigating

Our monitoring systems have detected a potential issue with SMS delivery to China Unicom. Our engineering team has been alerted and is actively investigating. We will update as soon as we have more information.

Posted Nov 24, 2020 - 23:53 PST

This incident affected: CARRIER NETWORK (SMS, APAC).