Millions of BlackBerry users in Europe, the Middle East and Africa have spent another day without internet and messaging services.
The outage came just hours after the smartphone’s Canadian manufacturer Research in Motion assured users that yesterday’s problems were over.
BlackBerry users took to Twitter to vent their anger after email, internet and the phone’s free messenger service stopped working at 11am.
“You realise that sending a letter in a bottle and putting it in the Thames is more reliable than a Blackberry,” one Twitter user, Daniel Kaluuya, tweeted.
Network operators such as African group Seacom also made it clear it was not their fault the services had failed.
T-Mobile said on its website that the problems were due to a European-wide outage on the Blackberry network.
It said: "RIM has apologised for the interruption to services and said it's working to restore normal operations."
Earlier RIM said it had restored BlackBerry services in the region, some 20 hours after users in EMEA and India first reported problems.
"Yesterday, some BlackBerry subscribers in the EMEA region experienced delays with BlackBerry services. The issue was resolved and services are operating normally," RIM said in a statement. "We apologise to those customers who were impacted for any inconvenience."
RIM is increasingly seen as a break-up or takeover target as it has been losing its status as the corporate email service of choice to other smartphones led by Apple Inc's iPhone, and after a dismal set of quarterly results last month.