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        SMS Delivery Delays to MobiFone in Viet Nam via a Subset of Longcodes & Alphanumeric Numbers

        Incident Report for Twilio

        Resolved

        We are no longer experiencing SMS delivery delays when sending messages to MobiFone in Viet Nam via a subset of longcodes & alphanumeric numbers. This incident has been resolved.
        Posted Nov 28, 2025 - 15:38 PST

        Update

        We are observing recovery in SMS delivery delays when sending messages to MobiFone in Viet Nam via a subset of longcodes & alphanumeric numbers. 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 Nov 28, 2025 - 13:38 PST

        Monitoring

        We are observing recovery in SMS delivery delays when sending messages to MobiFone in Viet Nam via a subset of longcodes & alphanumeric numbers. 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 Nov 28, 2025 - 11:35 PST

        Update

        We are still experiencing SMS delivery delays when sending messages to MobiFone in Viet Nam via a subset of longcodes & alphanumeric numbers. 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 Nov 28, 2025 - 07:44 PST

        Update

        We continue experiencing SMS delivery delays when sending messages to MobiFone in Viet Nam via a subset of longcodes & alphanumeric numbers. 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 Nov 28, 2025 - 03:40 PST

        Update

        We continue experiencing SMS delivery delays when sending messages to MobiFone in Viet Nam via a subset of longcodes & alphanumeric numbers. 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 Nov 28, 2025 - 01:43 PST

        Investigating

        We are experiencing SMS delivery delays when sending messages to MobiFone in Viet Nam via a subset of longcodes & alphanumeric numbers. 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 28, 2025 - 00:58 PST
        This incident affected: CARRIER NETWORK (SMS, APAC).
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