The first two handsets powered by the new Blackberry 10 operating system have been unveiled.
The Z10 is controlled via a 4.2in (10.7cm) touchscreen while the Q10 has a smaller 3.1in (7.9cm) screen and physical keyboard.
The UK will be the first to get the Z10 where it will launch on Thursday.
Its appeal could determine whether the firm - which has switched its name from Research In Motion to Blackberry - has a long term future.
The new operating system had originally been due for release last year. Canada and the UAE will get the Z10 in February and the firm said it should go on sale in the US in March.
"Two years ago we had to make a very serious decision," chief executive Thorsten Heins told a press conference in New York.
"Adopt someone else's platform or build a whole new one from ground up for Blackberry. And we made the tough call to go it alone.
"Bringing an entirely new platform to the market and ushering this company through a really difficult transition took careful planning and we absolutely knew it was risky."
Full story:
http://www.bbc.co.uk/news/technology-21261809
