Impacted Carrier(s):

T-Mobile USA

Impact Scope: Standard Rate MT SMS


RESOLVED: 2016-01-29 17:40:00 UTC

Please be advised that Muuzii monitoring has observed SMS traffic to be passing normally since 2016-01-29 17:40:00 UTC.

INITIAL: 2016-01-29 17:31:00 UTC

Dear Muuzii Customer,

Since 2016-01-29 17:10:00 UTC T-Mobile USA have been experiencing an issue with their SMS service.

As a result of this issue, a portion of standard rate MT SMS messages sent to subscribers on the affected carrier are currently being delayed or failing.

The carrier are aware of this issue and are working to resolve it as soon as possible. There is currently no estimated time to resolution, however we will issue an update as soon as more information becomes available.

Please accept our apologies on behalf of the carrier for any inconvenience or impact this may have to your business.

If you have any questions or concerns regarding this maintenance event, please don’t hesitate to contact us. Call Muuzii toll free at 1-855-621-5018 or send an email to