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Outage in Twilio

SMS Delivery Delays from Twilio to MobiFone Vietnam

Resolved Minor
February 28, 2026 - Started about 7 hours ago - Lasted about 7 hours
Official incident page

Incident Report

Summary AI Generated

Twilio experienced SMS delivery delays when sending messages to MobiFone network subscribers in Vietnam, affecting SMS services in the APAC region for 6.6 hours. Engineers worked with carrier partners to identify and resolve the underlying issue. Service recovery was observed and monitored before full resolution was confirmed, with SMS delivery to MobiFone Vietnam returning to normal operations.

We are experiencing SMS delivery delays when sending messages to MobiFone network subscribers 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.
Components affected
Twilio SMS, APAC

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Latest Updates ( sorted recent to last )
RESOLVED 38 minutes ago - at 02/28/2026 11:02PM

The incident has been resolved and SMS delivery from Twilio to MobiFone network subscribers in Vietnam is operating normally.

MONITORING about 1 hour ago - at 02/28/2026 10:21PM

We have observed a recovery in SMS delivery from Twilio to MobiFone network subscribers in Vietnam and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

MONITORING about 3 hours ago - at 02/28/2026 08:21PM

We have observed a recovery in SMS delivery from Twilio to MobiFone network subscribers in Vietnam and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

IDENTIFIED about 5 hours ago - at 02/28/2026 06:20PM

Twilio customers may be experiencing SMS delivery delays from Twilio to MobiFone network subscribers in Vietnam. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

IDENTIFIED about 6 hours ago - at 02/28/2026 05:22PM

Twilio customers may be experiencing SMS delivery delays from Twilio to MobiFone network subscribers in Vietnam. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

INVESTIGATING about 7 hours ago - at 02/28/2026 04:27PM

We are experiencing SMS delivery delays when sending messages to MobiFone network subscribers 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.

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