Outage in Twilio

SMS Delivery Delays from Twilio Pre-Registered Sender ID to T-Mobile Czech Republic

Resolved Minor

April 15, 2026 - Started 1 day ago - Lasted about 5 hours
Official incident page

Incident Report

Summary AI Generated

Twilio experienced SMS delivery delays for Pre-Registered Sender ID customers sending messages to T-Mobile network subscribers in the Czech Republic. The incident affected SMS services in Europe for 5.1 hours before Twilio identified the cause and implemented a resolution. Service recovery was observed and monitored for stability before the incident was fully resolved.

Twilio Pre-Registered Sender ID customers may be experiencing SMS delivery delays from Twilio to T-Mobile network subscribers in the Czech Republic. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

Components affected

Twilio SMS, Europe

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Latest Updates ( sorted recent to last )

RESOLVED about 21 hours ago - at 04/16/2026 06:36AM

We have observed a recovery in SMS delivery from Twilio Pre-Registered Sender ID to T-Mobile network subscribers in the Czech Republic and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

MONITORING about 23 hours ago - at 04/16/2026 04:34AM

We have observed a recovery in SMS delivery from Twilio Pre-Registered Sender ID to T-Mobile network subscribers in the Czech Republic and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

IDENTIFIED 1 day ago - at 04/16/2026 02:32AM

Twilio Pre-Registered Sender ID customers may be experiencing SMS delivery delays from Twilio to T-Mobile network subscribers in the Czech Republic. 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 1 day ago - at 04/16/2026 01:31AM

Twilio Pre-Registered Sender ID customers may be experiencing SMS delivery delays from Twilio to T-Mobile network subscribers in the Czech Republic. 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 1 day ago - at 04/16/2026 01:30AM

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