A three-day disruption to BlackBerry services has spread to North America, frustrating users of the Research In Motion devices just two days before rival Apple's new iPhone 4S goes on sale.
RIM advised clients of an outage in the Americas and said it was working to restore services as customers in Europe, the Middle East, Africa and India continued to suffer patchy email and no access to browsing and messaging.
RIM, which had said yesterday that services had returned to normal, said it is still working to resolve the problem but did not say how long it would take.
The service disruptions are the worst since an outage in North America two years ago.
Many companies, no longer seeing the need to pay to be locked into RIM's secure proprietary email service, have already begun allowing employees to use alternative smartphones, particularly Android devices and Apple's iPhone, for corporate mail.
