Some call them crackberries, because they're so addictive. Today BlackBerry users across East Anglia were able to access their e-mails, surf the web and use the devices' instant messaging app again, after a system crash paralysed the network yesterday.

This morning Research in Motion, the firm which makes the smartphones, said things were back to normal.

'Yesterday, some BlackBerry subscribers in the EMEA region experienced delays with BlackBerry services,' the firm said.

'The issue was resolved and services are operating normally. We apologize to those customers who were impacted for any inconvenience.'

Millions of users - including those in Norfolk, Suffolk and Cambridgeshire - are believed to have been affected by yesterday's crash, which happened across Europe, the Middle East and Africa at 11am.