Outage in Twilio
SMS Delivery Delays and Failures to China Unicom in China
Resolved MinorIncident Report
We are experiencing SMS delivery delays and failures when sending messages to China Unicom in China. 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, APACTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
5 months ago - at 12/05/2025 12:21AM
China SMS is a Twilio Best Effort destination. We will continue investigation, however resolve the status post per the information in the following post:
https://www.twilio.com/en-us/guidelines/cn/sms
INVESTIGATING
5 months ago - at 12/04/2025 10:54PM
We are experiencing SMS delivery delays and failures when sending messages to China Unicom in China. 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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