Twilio Services
Issues related to Twilio’s Software
    External Connectivity
    Issues found outside of Twilio’s Network
      Zipwhip Gateway
      Issues related to Zipwhip's Services
        Scheduled maintenance
        System Metrics

        SMS Delivery Delays from Twilio Phone Numbers to T-Mobile United States

        Incident Report for Twilio

        Resolved

        We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US , and we are resolve the issue.
        Posted May 21, 2026 - 13:12 PDT

        Monitoring

        We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US , Our team has monitoring the cause, and is working to resolve the issue. We will provide another update in 2 hour or as soon as more information becomes available.
        Posted May 21, 2026 - 11:03 PDT

        Update

        We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hour or as soon as more information becomes available.
        Posted May 21, 2026 - 05:01 PDT

        Update

        We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hour or as soon as more information becomes available.
        Posted May 20, 2026 - 20:59 PDT

        Update

        We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hour or as soon as more information becomes available.
        Posted May 20, 2026 - 16:49 PDT

        Update

        We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hour or as soon as more information becomes available.
        Posted May 20, 2026 - 14:47 PDT

        Identified

        We have been able to confirm stability and recovery with the traffic sent to T-Mobile Network in the US with the exception of a subset of short codes, 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.
        Posted May 20, 2026 - 13:45 PDT

        Monitoring

        We have observed a recovery in SMS and MMS delivery from Twilio Phone Numbers to T-Mobile network subscribers in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
        Posted May 20, 2026 - 11:24 PDT

        Update

        Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. 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.
        Posted May 20, 2026 - 09:55 PDT

        Identified

        Twilio customers may be experiencing SMS delivery delays from a subset of Twilio Short Codes to T-Mobile network subscribers in the United States. 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.
        Posted May 20, 2026 - 08:54 PDT

        Investigating

        Twilio customers may be experiencing SMS delivery delays from Twilio Phone Numbers to T-Mobile network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
        Posted May 20, 2026 - 08:43 PDT
        This incident affected: CARRIER NETWORK (SMS Short Code, North America).