Nokia on Tuesday launched its first smartphones to run on the updated Symbian software with new icons, enhancements and a faster browser.
Nokia said the two models -- the E6 and X7 -- have longer battery life, better text input and new Ovi Maps applications with improved search and public transport routes.
The Nokia E6, with a standard QWERTY keypad and high resolution touch display, is aimed at corporate customers, while the Nokia X7 is an entertainment-focused handset with a 4-inch (10-centimeter) display made for games.
The world's largest cellphone maker did not price the handsets.
Markets seemed unimpressed by the announcement, which comes as Nokia continues to struggle against stiff competition, especially from Apple (AAPL) and Research in Motion.
More than 200 million phones, with 150 million more expected on the market, use Symbian technology, seen by some developers as clumsy and dated. At the end of last year, it was surpassed by Android as the world's No. 1 smartphone software.
Nokia said the new, faster Symbian software, known as Symbian Anna, will be available for previously released top models, including the N8, E7, C7 and C6-01 devices "in coming months."