Awesome man! That's insanely useful.
For anyone else who doesn't have Kontakt, you can use the download from dymon above to get the individual .wav files for all notes and slap them together, and you can put those samples against individual keys or key ranges with Grace VST Sampler https://bedroomproducersblog.com/2015/09/14/grace-sampler-free/
You've got to fiddle with the settings to get that more raw Nokia sound rather than a piano-like thing but a quick youtube tutorial on using Grace should help figure that out. It did for me!
I'm also using Cakewalk, which is again,free. You might detect a running theme here :P