Tuesday’s rush hour in South Florida featured a lot fewer commuters talking on their AT&T cell phones while driving.  The reason?  They couldn’t.

A massive AT&T service outage extending from Broward County to the Florida Keys caused wireless chaos for some customers yesterday, many showing up at AT&T stores looking for answers why they could not make or receive calls or launch 3G data sessions with the carrier.

The outage, which began shortly after 6pm, reportedly blocked cell phone calls and data sessions, and was eventually traced to a switch outage in Broward County.  Customers who rely on their AT&T cell phones were annoyed at the loss of service, particularly emergency responders and medical personnel who found their phones useless until around 10pm, when service was eventually restored.

AT&T customers told reporters they were also irritated by the lack of information from the company about the outage; some were even told there were no service problems in the area when they called AT&T for information.

When AT&T realized there was a problem, the company released a statement.

“AT&T technicians quickly worked to resolve the issue, and service is now running normally,” said AT&T spokesperson Kelly Starling. “We apologize for any inconvenience to our customers.”

[flv]http://www.phillipdampier.com/video/WFOR Miami ATT Restores 3G Cell Service After 3 Hour Outage 6-28-11.mp4[/flv]

WBFS/WFOR-TV in Miami took a deeper look into yesterday’s massive cell phone failure for AT&T customers.  (3 minutes)