More than a few of the items on the list are certainly debatable, especially the last one, but the point remains: in only three years, the iPhone has seen an explosion in functionality that very few people could have predicted when it was first introduced. It’s become the electronic equivalent of a Swiss Army Knife, capable of duplicating or outright replacing many standalone devices and items and rendering others completely obsolete. It seems somewhat counterintuitive that something that costs as much as an iPhone could actually end up saving you money in the long run, but if you can actually manage to replace all 33 items on this list with an iPhone as I have, you’ll end up coming out way ahead.