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The store allows an estimated 50 million Nokia users to download applications, games, videos, podcasts, productivity tools and location-based services.
"Ovi Store is open for business and we have stocked the shelves with both local and global content for a broad range of Nokia devices," said Tero Ojanperä, executive vice-president, Nokia Services.
The service, which is available in English, German, Italian, Russian and Spanish, is live in Australia, Germany, Ireland, Italy, Russia, Singapore, Spain and the UK.
The US mobile operator will introduce support for Ovi Store later this year, said Nokia.