CEO Thorsten Heins used the BlackBerry Live event to continue pushing the optimistic message for the company

BlackBerry 10.1 will be available as an OTA update in the next few weeks

QWERTY-based BlackBerry Q5 is down with the kids

Alleged pictures of the BlackBerry R10 show a cheaper-looking QWERTY smartphone

US Department of Defense moves towards a mixed-device environment

Carphone Warehouse begins accepting BlackBerry Q10 pre-orders for April release

Analysts downgrade rating just days before key results are due

Developers add 30,000 BlackBerry 10 apps in the seven weeks since it was released

BlackBerry says BlackBerry 10 has not been 'rejected' - it just hasn't been approved yet

BlackBerry chief executive Thorsten Heins has criticised Apple's iPhone user interface as dated, as the iPhone faces increasingly strong competition