SMS Delivery Receipts Delays to US Cellular Network Over a Subset of Short Codes

Incident Report for Twilio

Resolved

The issue affecting delivery receipts of messages sent to the US Cellular Network has been resolved, and the service is functioning normally at this time.

Posted Mar 01, 2022 - 16:35 PST

Monitoring

We have started seeing recovery for the delivery receipts of messages sent to the US Cellular Network. We will continue to monitor to ensure a full recovery. We expect to provide another update in 30 minutes or as soon as more information becomes available.

Posted Mar 01, 2022 - 16:10 PST

Update

We are investigating SMS delivery receipt delays when sending messages to the US Cellular Network over a subset of short codes. 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.

Posted Mar 01, 2022 - 15:19 PST

Investigating

Our monitoring systems have detected a potential issue with SMS Delivery Receipts Delays To US Cellular Network. Our engineering team has been alerted and is actively investigating. We will update as soon as we have more information.

Posted Mar 01, 2022 - 15:12 PST

This incident affected: CARRIER NETWORK (SMS Short Code, North America).