One option to have VNC viewer is to install Easy Debian on Nokia N9/N950. See the HarmChom topic and the how-to-install using Inception (instead of open kernel).

As root in debian, install ssvncviewer (my choice over 10 vnc viewers that I tested, it allows typing the password using MeeGo Terminal, has many options including full-screen, etc) :
[root@chroot: /]apt-get install ssvncviewer

To use without a real keyboard (on N950 or external Bluetooth on N9), fitting the remote screen to N9 screen :
[root@chroot: /] ssvncviewer -fullscreen -scale "854x480" <ip>

With a real keyboard (on N950 or external Bluetooth on N9), there are many keyboard shortcuts : arrows, home/end, page up/down to move, etc (see "ssvncviewer --help" for more information). Here in view only mode :
[root@chroot: /] ssvncviewer -fullscreen -viewonly <ip>
or choosing the parameters and options from GUI :
root@chroot: /] ssvnc