T-Mobile posted a link on twitter to this confirmation notice:
UPDATE 11/03/2009 Â 10:25 PM PST:
T-Mobile confirms it has fully restored voice and text/picture messaging services for customers affected by intermittent service disruptions on Tuesday. Â About five percent of our customers across various geographies were affected for much of Tuesday evening, and by late Tuesday PST their service was restored. Â Our sole focus has been restoring full services for all customers; we are now investigating the root cause of the incident. Â We sincerely apologize for the inconvenience that this has caused our customers.Â