Mobile device is too small, I feel it not easy as using a laptop.

But can we do something to overcome this problem? my ideas are

1) virtual big screen Can we add a micro projector into the mobile phone? We then use the phone to project the screen into a wall for bigger view. Although it looks like the hardware improvement, it actually requires software to do something such as anti-viberation. As you know, a virtual screen from a small device is easily affected by any little viberation, it is necessary to use OS function for a calibration,

2) finger recognision When using the projected screen, the easiest way for the input method is finger-point. It means the mobile device's camera feedbacks the screen that mobile phone is projecting, locates the finger-point of the presenter as the input. Again this should be a function inside the mobile OS.

I wish one day I can see such a mobile phone, then I will throw away my laptop.