Nokia has just pushed the Bluetooth Share app to the Marketplace. The app allows you to exchange files between your device and other devices capable of Bluetooth transfers, but only works for Windows Phone 7.8 – trying to download it in Windows Phone 7.5 will not work.
Microsoft has announced that the 7.8 update won’t be available until early next year, but if you can’t wait until then, you can head over to your local Nokia Care store and get it there. I personally had success with a Lumia 800 and there are reports for Lumia 710 and 610 devices getting the updates as well.
Even if you have the 7.8 update, it may not work on non-Nokia Windows Phone devices, such as those from HTC or Samsung.
Via : Nokiablog