T-Mobile MMS MO latency and missing MMS DLRs

Incident Report for Vibes

Resolved

Vibes identified an issue with MMS MO latency and missing MMS DLRs from T-Mobile, which began on 8/13 at 4:30 AM CST. The issue was resolved on 8/14 at 10:20 AM CST.

Impact:
MMS MO messages will be delivered as they are reprocessed
MMS DLRs will not be reprocessed
Posted Aug 13, 2026 - 04:30 CDT