Airtel and MTN have announced a fee waiver for all their Blackberry customers as compensation for the global interruption of Blackberry services last week.The BlackBerry outage was caused by a hardware error which halted messaging and Web browsing across many parts of the world, disrupting services for three days, but RIM has now fully restored data services to its BlackBerry devices.The disruptions began in Europe, the Middle East, Africa and India early in the week and later spread to North America.MTN Ghana is offering a four-day fee waiver, whilst Airtel Ghana offers a three-day waiver to its postpaid customers and for prepaid customers, three days would be added to their next subscription.Managing Director of Airtel Ghana, Mr. Philip Sowah was quoted in a statement as saying “we were concerned about the inconvenience this had caused all our BlackBerry users last week and as a sign of goodwill to our customers, agreed to compensate both our prepaid and postpaid customers for the inconvenience.”A statement signed by MTN Ghana Corporate Services Executive, Mrs. Cynthia Lumor said “we care about our customers, and we are aware of the inconvenience our Blackberry subscribers experienced during the service interruption.“That is why, even though the BlackBerry disruption was caused by an incident outside our control, we will waive four days of subscription of our affected pre-paid Blackberry subscribers, and four days of rental for our affected post-paid BlackBerry subscribers.”Blackberry services including messaging and web browsing on BlackBerry were halted across many parts of the world as a result of a hardware failure in the network infrastructure of Research in Motion (RIM), the global provider of BlackBerry services.The incident affected Blackberry subscribers in Ghana.Some telecom operators offering Blackberry services in Ghana sent messages to their customers notifying them the challenges were from source, and not from the network.Meanwhile RIM is yet to tell exactly what went wrong, and reports say Blackberry customers elsewhere are angrily demanding answers for the problem that lasted for days.