1) What is the burn-out time for one of those projector bulbs? And when it does run out, what will a replacement cost, and will I be able to change it myself? Somehow I suspect the answer is going to be 'buy yourself a new iPhone'.
2) How will using the projector affect battery life? How many lumens will it produce, and what is the realistic display range?
3) Mobile projectors aren't new – so why should Apple get a patent for it? Does Samsumg have a patent on theirs? From a few years ago: http://www.gizmag.com/samsung-pico-projector-mobile-phone/10773/
Reshared post from +Mike Elgan
Is this the iPhone of the future? Should it be?
Apple was recently granted patents for a "pico projector" — a tiny projector small enough to be built into a phone. Is this what they're going to do with it?
Props to Aatma Studio for creating the CGI and 9to5 Mac for the story: