Outage in Twilio
SMS Delivery Delays and Failures from a Subset of Twilio Phone Numbers to China Mobile Hong Kong
Resolved MinorIncident Report
Summary AI Generated
Twilio experienced SMS delivery delays and failures from a subset of phone numbers to China Mobile network subscribers in Hong Kong for 6.4 hours. The issue affected SMS services in the APAC region, preventing reliable message delivery to this specific carrier network. Twilio identified the root cause and resolved the incident, with SMS delivery returning to normal operations.
Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Phone Numbers to China Mobile network subscribers in Hong Kong. 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, APACTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
19 days ago - at 05/21/2026 11:45AM
The incident has been resolved and SMS delivery from a subset of Twilio Phone Numbers to China Mobile network subscribers in Hong Kong is operating normally.
MONITORING
19 days ago - at 05/21/2026 07:43AM
We have observed a recovery in SMS delivery from a subset of Twilio Phone Numbers to China Mobile network subscribers in Hong Kong and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
MONITORING
19 days ago - at 05/21/2026 05:43AM
We have observed a recovery in SMS delivery from a subset of Twilio Phone Numbers to China Mobile network subscribers in Hong Kong and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
IDENTIFIED
19 days ago - at 05/21/2026 05:28AM
Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Phone Numbers to China Mobile network subscribers in Hong Kong. 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
19 days ago - at 05/21/2026 05:27AM
Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Phone Numbers to China Mobile network subscribers in Hong Kong. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
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