VoIP service Skype has unveiled an app for Nokia mobile phones running the Symbian platform that allows users to make free calls to other Skype users from their handsets.

The app, which is compatible with a number of Nokia phones including including the N97, the X6 and the 5800 XpressMusic, will route Skype calls over the internet using the handset's Wi-Fi or 3G connection and can be downloaded for free from Nokia's Ovi store.

The Skype app also lets users send and receive instant messages from other Skype users when they are online, save money when making calls or sending text messages to international numbers and receive calls directed to their Skype number on their handset.

The Nokia N97 is one of the handsets compatible with the new Skype app

"We're seeing around 1.5 million downloads a day on Ovi Store now and believe that the Skype client for Nokia smartphones will have wide appeal to Symbian users," said Jo Harlow, senior vice president for Smartphones at Nokia.

The app will run on any Nokia handset using Symbian ^1, the latest version of the Symbian platform.

Skype also revealed it planned to make the app available for handsets running the platform from other manufacturers, including Sony Ericsson, in the coming months.

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