SMS Delivery Delays to MobiFone Network in Vietnam via a Subset of Long Code Numbers & Alphanumeric Senders

Incident Report for Twilio

Resolved

We are no longer experiencing SMS delivery delays to MobiFone network in Vietnam via a subset of long code numbers & alphanumeric senders. This incident has been resolved.

Posted Oct 31, 2025 - 18:23 PDT

Update

We continue to observe recovery in SMS delivery delays when sending messages to MobiFone network in Vietnam via a subset of long code numbers & alphanumeric senders. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Oct 31, 2025 - 16:34 PDT

Monitoring

We are observing recovery in SMS delivery delays when sending messages to MobiFone network in Vietnam via a subset of long code numbers & alphanumeric senders. We will continue monitoring the service to ensure a full recovery. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Oct 31, 2025 - 14:32 PDT

Update

We are still experiencing SMS delivery delays to MobiFone network in Vietnam via a subset of long code numbers & alphanumeric senders. 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 Oct 31, 2025 - 10:55 PDT

Update

We continue to experience SMS delivery delays to MobiFone network in Vietnam via a subset of long code numbers & alphanumeric senders. Our engineers are working with our carrier partner to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Oct 31, 2025 - 08:58 PDT

Investigating

We are experiencing SMS delivery delays to MobiFone network in Vietnam via a subset of long code numbers & alphanumeric senders. 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 Oct 31, 2025 - 07:58 PDT

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