If you search for the generation you want with “paper craft” also in the search bar, you should come up with several results that are to the proper scale. [2] X Research source

Don’t cut the pieces out separately. You will make folds in the paper to form the shape of the iPhone, so you will need to cut the template out as one piece rather than cutting out the screen, then the back, etc. [5] X Research source

If you really want to make a sturdy prop, then you can always make the filler from plywood instead of cardboard.

Depending the the thickness of cardboard you use and the dimension of the generation of iPhone you printed, you may need two or even three pieces of cardboard to reach the proper thickness. If this is the case, line all of them up, so they’re flush and glue them together.

The cardboard should be the same size as the folded template, but even a tiny amount of slippage can bulge the paper or make visible creases in it.

Many paper craft templates may also have slots for you to stick the tabs into to help hold the finished product together. [7] X Research source

The piece of plastic should be rigid but still very thin. The type of plastic that libraries use as jacket covers on hardback books is perfect; however, do not vandalize a library book. If you ask nicely, they might simply give you one, or you can use another similar material.

Don’t worry if this makes the screen cover very slightly smaller than the iPhone shape since screen covers usually are a tiny bit smaller anyway.

If you print the initial template on glossy photo paper, this will make the tape even more difficult to see.