So as I said, I do not have an actual display or monitor for my raspberry pi 3. That's why I wanted to use an old android phone (htc desire 500) as a display.
That for I followed a tutorial (very serious though) --> http://joshuawoehlke.com/android-raspberry-pi-display-over-usb/
I rigourusly followed every single step of it, but finally, as I started the vnc viewer at
192.168.42.42:1 , it never asked for my password.
It just continued to
connect until the natural error dialog
error : connection timedout appeared.
So Guys, if any of you has ever tried this, it would be really nice if you could help me out, because without a proper display i can't even begin my PI Project