How to use your Android phone as a remote control for your OSMC Media Center?
On your Android phone go to https://play.google.com/store/apps/details?id=org.xbmc.android.remote and install the Official XBMC Remote app.
Run the app and choose ‘Add new host‘.
Then you have to enter the local IP-address of your PI, for instance: 192.168.0.105.
Port number: 80
After entering the new host info choose ‘Remote Control‘ and there you go!