I used x11vnc to get what I wanted. Finally.
Thank you all who helped me.
The connection is quite slow, but I don't mind.
I also discovered that I can use VNC and SSH at the same time.
x11vnc has to be launched with terminal:

Then I connected with TightVNC to the phone.
And it works quite well.

I only get multiple windows within the TightVNC viewer.
Does anybody know how I can get rid of them?