SMS Delivery Delays and Failures to Viettel in Vietnam

Incident Report for Twilio

Resolved

This incident has been resolved.

Posted Mar 22, 2026 - 05:54 PDT

Update

We are experiencing SMS delivery delays when sending messages to Viettel in Vietnam. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

Posted Mar 22, 2026 - 03:31 PDT

Update

We are experiencing SMS delivery delays when sending messages to Viettel in Vietnam. 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 Mar 22, 2026 - 01:30 PDT

Investigating

We are experiencing SMS delivery delays when sending messages to Viettel in Vietnam. 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 Mar 22, 2026 - 00:29 PDT

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