Twilio incident
SMS Delivery Delays and Failures from a Subset of Twilio Long Codes to U Mobile Malaysia
Resolved after 13 hours 13 minutes, affecting SMS, APAC, on May 11, 2026.
The incident has been resolved and SMS delivery from a subset of Twilio Long Codes to U Mobile network subscribers in Malaysia is operating normally.
Affected components
Update timeline
- investigating May 11, 2026, 05:22 PM UTC
Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Long Codes to U Mobile network subscribers in Malaysia. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- identified May 11, 2026, 05:30 PM UTC
Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Long Codes to U Mobile network subscribers in Malaysia. 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.
- identified May 11, 2026, 06:30 PM UTC
Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Long Codes to U Mobile network subscribers in Malaysia. 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 May 11, 2026, 08:30 PM UTC
Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Long Codes to U Mobile network subscribers in Malaysia. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.
- identified May 12, 2026, 12:31 AM UTC
Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Long Codes to U Mobile network subscribers in Malaysia. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
- monitoring May 12, 2026, 03:18 AM UTC
We have observed a recovery in SMS delivery from a subset of Twilio Long Codes to U Mobile network subscribers in Malaysia and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- monitoring May 12, 2026, 05:19 AM UTC
We have observed a recovery in SMS delivery from a subset of Twilio Long Codes to U Mobile network subscribers in Malaysia and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
- resolved May 12, 2026, 06:36 AM UTC
The incident has been resolved and SMS delivery from a subset of Twilio Long Codes to U Mobile network subscribers in Malaysia is operating normally.
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