Hi,
A great idea, but would a mobile phone CPU have enough grunt to emulate an Amiga at a reasonable speed?
As far as I'm aware, Symbian-based phones use ARM-based CPUs in the 150-200Mhz range and I'm not sure if this would be enough, even without the overhead of the screen scaling to fit the low-res phone screens, plus mixing the Amiga's audio down to suit the phone hardware...
I wish you luck anyway!
- Ali