Here is the final product. It fits perfect and works great. I've attached my phone to the side of the Osmo and using the GoPro app to control the camera and view the video.
Hi zoti and DJI-Thor, sorry for the question but I am a newbie and do not understand how you can use the Osmo Mobile without a Bluetooth connection and DJI app? I want to do the same with my Microsoft Lumia phone ... only use the stabilizing function without the app but found no way to realize until now. Please give me advice.
A little update. It is possible to use the GoPro facing forward if you use the NARROW field of view option. That along with the new DJI hone holder I bought (great quality on that piece) makes it a very useful piece. Only thing you might need to do is put a piece of take on the sensor.