HELSINKI: Nokia Oyj will try again to tackle Apple Inc's iPhone in the top-end of the handset market with a bet on Linux software, several industry sources told Reuters.

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Top handset maker Nokia will show its first high-end phone running on Maemo, a version of Linux, next week at the annual Nokia World event in Stuttgart, Germany, the sources said.

But analysts said it would likely not become clear before next year at the earliest whether this would help Nokia achieve its aims.

The Finnish group has dabbled with Linux since 2005, using it in "Internet tablets" -- sleek phone-like devices used to access the Web that have failed to gain mass-market appeal in part due to their lack of a cellular radio.

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"It looks like Maemo, or at least a Linux derivative of some description, will play a key role for Nokia in high-end (products) over the next year or two," said Neil Mawston from Strategy Analytics.

Nokia's workhorse Symbian operating system (OS) controls half of the smartphone market volume -- more than its rivals Apple, Research in Motion Ltd and Google Inc in total.

Yet analysts said Linux-based products could have important advantages.

"Maemo is clearly far more flexible than Symbian, so it's a better option for advanced devices using various display technologies and rapidly evolving user-interface software," said analyst Tero Kuittinen from MKM Partners.

A Nokia spokesman said the company could not comment on future phone launches.