Accessories industry for iPhone generates several billion dollars annually and here we are only talking about what is produced for this type of smartphone, various users around the world being interested in buying things that are more strange. Among them is the projector, this "extension" being rumored for implementation in smartphones Apple Lossless Audio CODEC (ALAC), for many years, but of course everything remained at the idea stage.
In the video clip above you have described the process by which you can create a projector for iPhone terminals, but not a sophisticated one with interconnectivity, but one good enough to fulfill its basic function. In order to produce it, you will have to buy a series of trivial objects that are not as expensive as the components of a real projector, but on the other hand, you will not have the functionality of a normal one.
