Installing Dual Operating Systems in Smartphones and Tablets Devices.
There could be three combinations for these.
1. Theoretical correct, Practically easy.
2. Theoretical incorrect, hence Practically not possible.
3. Theoretical correct, Practically difficult but not impossible.
Similar to multiple Hard disk drives, Multiple LAN Cards, Multiple RAM Chips etc installation in a single computer, I feel it is possible to install multiple ROM chips in the Smartphone Device.
i.e. I Feel Theoretically yes.
Now remains the question of implementation, so it could be probably option 3.
Thanks & Regards,
Prashant S Akerkar