On Tuesday afternoon (November 3rd, 2009) cell phone and data services from T-Mobile were interrupted in an outage that lasted up to 8 hours. Customers in Orange County were also affected and in checking with a few clients in Irvine, Santa Ana and Lake Forest who use T-Mobile’s wireless and broadband services confirmed that they were unreachable. Calls placed to those numbers resulted in either a fast busy tone or “Network Unavailable” recordings.
The outage affected customers in the US as well as worldwide and began (at least in Orange County) around 4:00PM. Service for some customers was restored as early as 5:00 PM and as late as 10:30 PM. Guardian Networks performed testing by calling cell phone numbers in the local area (Costa Mesa, Irvine, Santa Ana, Lake Forest and Newport Beach) and attempting to connect to clients using T-Mobile’s business broadband service and confirmed that those clients were unreachable.
T-Mobile confirmed the outage on their forum, but did not immediately explain the reason for the outage