Resolved
Duo has confirmed that the issue affecting SMS delivery to phone numbers using T-Mobile services in the US has been fully resolved.
Posted Aug 26, 2025 - 06:21 EDT
Monitoring
We are starting to see recovery post the fix implemented by our service provider for the issue affecting SMS delivery to phone numbers using T-Mobile Services in the US.
Please feel free to check back here or subscribe to updates for the latest information regarding any changes or resolutions.
Posted Aug 26, 2025 - 04:14 EDT
Identified
We have detected the issue affecting SMS delivery to phone numbers using T-Mobile Services in the US.
Please feel free to check back here or subscribe to updates for the latest information regarding any changes or resolutions.
Posted Aug 26, 2025 - 04:02 EDT
Investigating
We are currently investigating an issue affecting SMS delivery to phone numbers using T-Mobile Services in the US.
Please feel free to check back here or subscribe to updates for the latest information regarding any changes or resolutions.
Posted Aug 26, 2025 - 02:29 EDT
This incident affected: DUO1 (SMS Message Delivery), DUO2 (SMS Message Delivery), DUO4 (SMS Message Delivery), DUO5 (SMS Message Delivery), DUO6 (SMS Message Delivery), DUO7 (SMS Message Delivery), DUO8 (SMS Message Delivery), DUO10 (SMS Message Delivery), DUO11 (SMS Message Delivery), DUO12 (SMS Message Delivery), DUO13 (SMS Message Delivery), DUO14 (SMS Message Delivery), DUO15 (SMS Message Delivery), DUO16 (SMS Message Delivery), DUO17 (SMS Message Delivery), DUO18 (SMS Message Delivery), DUO19 (SMS Message Delivery), DUO20 (SMS Message Delivery), DUO21 (SMS Message Delivery), DUO22 (SMS Message Delivery), DUO23 (SMS Message Delivery), DUO24 (SMS Message Delivery), DUO25 (SMS Message Delivery), DUO26 (SMS Message Delivery), DUO27 (SMS Message Delivery), DUO28 (SMS Message Delivery), DUO29 (SMS Message Delivery), DUO30 (SMS Message Delivery), DUO31 (SMS Message Delivery), DUO32 (SMS Message Delivery), DUO33 (SMS Message Delivery), DUO34 (SMS Message Delivery), DUO36 (SMS Message Delivery), DUO37 (SMS Message Delivery), DUO39 (SMS Message Delivery), DUO40 (SMS Message Delivery), DUO41 (SMS Message Delivery), DUO42 (SMS Message Delivery), DUO43 (SMS Message Delivery), DUO44 (SMS Message Delivery), DUO45 (SMS Message Delivery), DUO46 (SMS Message Delivery), DUO9 (SMS Message Delivery), DUO49 (SMS Message Delivery), DUO50 (SMS Message Delivery), DUO51 (SMS Message Delivery), DUO52 (SMS Message Delivery), DUO54 (SMS Message Delivery), DUO55 (SMS Message Delivery), DUO56 (SMS Message Delivery), DUO58 (SMS Message Delivery), DUO59 (SMS Message Delivery), DUO60 (SMS Message Delivery), DUO62 (SMS Message Delivery), DUO63 (SMS Message Delivery), DUO64 (SMS Message Delivery), DUO65 (SMS Message Delivery), DUO71 (SMS Message Delivery), DUO72 (SMS Message Delivery), DUO73 (SMS Message Delivery), DUO74 (SMS Message Delivery), DUO75 (SMS Message Delivery), DUO76 (SMS Message Delivery), DUO77 (SMS Message Delivery), DUO78 (SMS Message Delivery), DUO79 (SMS Message Delivery), DUO80 (SMS Message Delivery), and DUO35 (SMS Message Delivery).