The carrier has rectified the fault on their platform. This issue is now resolved.
Incident End Time: 2022-03-22 00:40 UTC
Posted Mar 23, 2022 - 11:58 UTC
Update
Kindly note that the issue is still ongoing, T-Mobile US is still working to resolve the situation at hand, no estimated time of resolution can be provided yet.
We are also noticing delayed SMS and MMS MTs delivery due to degraded performance on T-Mobile's end.
You will be informed as new information is available.
Posted Mar 22, 2022 - 16:59 UTC
Update
We are continuing to work on a fix for this issue.
Posted Mar 22, 2022 - 16:11 UTC
Update
Kindly note that the issue is still ongoing, T-Mobile US is still working to resolve the situation at hand, no estimated time of resolution can be provided yet.
You will be informed as new information is available.
Posted Mar 22, 2022 - 14:36 UTC
Identified
The issue has been identified, T-Mobile is having an issue with MT traffic requesting for delivery receipts. We have implemented a work around to mitigate the ongoing issue with T-Mobile by disabling delivery receipts on all MT traffic to restore MT delivery until T-Mobile has resolved the issue.
Posted Mar 22, 2022 - 00:03 UTC
Update
We are continuing to investigate this issue.
Posted Mar 21, 2022 - 22:28 UTC
Investigating
We are currently observing delivery issues towards T-Mobile US.
Incident Start Time: 2022-03-21 20:59 UTC
Impact SMS: Clients may experience delayed/failed/rejected MT traffic towards T-Mobile in the US.
Impact MMS: Clients may experience delayed/failed/rejected MMS MT traffic towards T-Mobile in the US.
We will update you as soon as we have more information.
Posted Mar 21, 2022 - 22:06 UTC
This incident affected: Sinch DI Services (SMS 365 Operator RoW) and External Connectivity (SMS - US - ShortCode, SMS - US - Toll Free, SMS - US - 10DLC).