If anyone wants to see something that has been done already for Windows and Android - and gone I to production on a larger scale, then search for the gole1

The 4gb ram version. With 64gb storage comes to £129.99 at the moment. The 2gb/32gb is about £100
It has a 5 inch screen, battery for 2.5 hours, runs full windows 10, and android 5.something.
It has full size usb ports and really does fit in a pocket.