SMS Delivery Report Delays to MobiFone in Vietnam via a Subset Of Alphanumeric Sender ID

Incident Report for Twilio

Resolved

We are no longer experiencing SMS Delivery Report Delays when sending to MobiFone in Vietnam via a Subset Of Alphanumeric Sender ID. This incident has been resolved.
Posted Oct 24, 2025 - 12:46 PDT

Monitoring

We are observing recovery in delivery report delays when sending to MobiFone in Vietnam via a Subset Of Alphanumeric Sender ID. 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 24, 2025 - 10:56 PDT

Update

We continue to experience delays in receiving message delivery reports when sending to MobiFone in Vietnam via a Subset Of Alphanumeric Sender ID. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 2 hours or as soon as more information becomes available.
Posted Oct 24, 2025 - 09:05 PDT

Investigating

We are experiencing delays in receiving message delivery reports when sending to MobiFone in Vietnam via a Subset Of Alphanumeric Sender ID. Our engineers are working with our carrier partner to resolve the issue. We expect to provide another update in 1 hour or as soon as more information becomes available.
Posted Oct 24, 2025 - 08:07 PDT
This incident affected: CARRIER NETWORK (SMS, APAC).