By BRUCE MEYERSON AP Business Writer
NEW YORK (AP) -- The BlackBerry e-mail service suffered a nationwide outage Friday morning, but the nearly four-hour disruption only appeared to affect devices connected to certain types of cellular networks.
Research in Motion Ltd., which makes the popular mobile devices and provides a service connecting them to corporate networks, did not respond to phone calls seeking comment.
But three of the nation's biggest cellular carriers confirmed the outage.
Cingular Wireless said RIM's outage lasted for three hours and 49 minutes. T-Mobile USA said service was restored by noon EDT.
Nextel Communication Inc. reported that only some customers experienced trouble, and in those cases it was a delay in e-mails rather than a full-fledged service disruption.