Nokia Chief Executive Stephen Elop unveiled a new smartphone that uses software the firm plans to ditch, a move analysts said would probably condemn the device to obscurity.
Stephen Elop unveiled the new all-screen N9 smartphone, which uses a platform called MeeGo.
The model - Nokia's first and last to use MeeGo - can be navigated by a single finger swipe and comes in black, cyan and magenta colours in a polycarbonate design.
The MeeGo platform - a newcomer in the market dominated by Google and Apple - was born in February 2010 when Nokia and Intel unveiled a merger of Nokia's Linux Maemo software platform with Intel's Moblin, which is also based on Linux open-source software.
The N9 has a 3.9 inch curved glass AMOLED display and is available in 16GB and 64GB models.
It comes with an 8 megapixel auto focus camera with Carl Zeiss optics, dual LED flash and 28mm lens. The phone will go on sale later in this year.