iPhone Duo review: fun to play with and cool matte inner display, but small cover display, heavier and bulkier than other phones, average cameras, and gets hot (The Verge)

The Verge:
iPhone Duo review: fun to play with and cool matte inner display, but small cover display, heavier and bulkier than other phones, average cameras, and gets hot  —  The iPhone Duo is the riskiest Apple product in years.  It's a huge rethink of what an iPhone is and could be …