Nokia has unveiled three smartphone devices running its new operating system (OS), Symbian Belle.
The Nokia 700, 701 and 600 also feature near-field communication (NFC) support and run Symbian Belle - the latest update to Nokia's mobile OS following the Symbian Anna update six months ago.
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"Symbian Belle powers all three devices, with single-tap NFC technology for sharing and pairing, the most personal user interface so far and a more powerful mobile web browsing experience," said Nokia in a statement.
The phone maker said the announcement proved the company's commitment to Symbian despite its partnership with Microsoft and transition to Windows Phone devices before the end of 2012.
Francisco Jeronimo, research manager of European mobile devices at IDC, believes that if Nokia had released Symbian Belle a year ago, it might still be the worldwide smartphone market leader.
IDC figures show Nokia fell to the third largest smartphone manufacturer after Apple iOS and Google Android at the end of the second quarter of 2011, with 15.5% market share.
"Above all, the previous Symbian Anna and the new Symbian Belle demonstrate that Nokia is focusing on execution. To launch two versions of a platform within periods of six months also demonstrates that Nokia can be faster than its competitors in meeting customer expectations. While Google and Apple are releasing new versions within approximately 12-month timeframes, Nokia is doing it within six months," said Jeronimo.
"The new devices and the new version of Symbian clearly show that Nokia is still able to move fast, despite a slow start, which is an important sign for a brighter future with Windows Phones."
However, Nokia's recent financial results showed smartphone sales dropped 32% in the first half of 2011. The firm reported operating losses of €487m (£429m), fuelled by a decline in smartphone sales.
All three new handsets include 1GHz processor, five megapixel camera and 2GB of internal memory. Nokia claims the Nokia 700 is the company's smallest and most eco-friendly smartphone. The Nokia 701 is based on the Nokia C7 design and includes a 3.5 inch ClearBlack display and active noise cancellation for better sound quality calls.
The Nokia 600 includes a built-in FM radio antenna and 60 hours of music playback.
Nokia said it plans a series of software updates over the next 12 months. Symbian Belle features NFC support, up to six home screens, live widgets and pull-down menus to access notifications.
Symbian Belle will also ship on new versions of Nokia's N8, E6, E7, C7, C6-01 and Oro devices.