Research in Motion says they have restored Blackberry services in Europe, Middle East and Africa on Tuesday after the EMEA and India first reported problems in email and messenger features.
"Yesterday, some BlackBerry subscribers in the EMEA region experienced delays with BlackBerry services. The issue was resolved and services are operating normally," said RIM in a statement.
"We apologise to those customers who were impacted for any inconvenience," the company added.
RIM claims that many devices started working properly around 9 a.m. yesterday.
After disappointing quarterly results last month and losing its status as a corporate email service to Apple’s iPhone smartphones and Google Android based devices, RIM is considered as break-up or takeover target.
Due to the service blackout, millions of users in Europe, Middle East and Africa were not able to access the Internet or send instant messages starting around 11 a.m.
Even though RIM did not provide any explanation for the sudden blackout, many reports state the possible cause was a server crash at a data centre in Slough.
During the blackout, which lasted almost 20 hours, users of Blackberry expressed their anger on various platforms like Twitter and other social networks.