The fact that, yes, China makes iPhones and America has to import them. However that completely ignores the fact that China is making iPhones for _Apple_ and that whilst I'm sure the Chinese factories make a little profit, Apple's is making much much more on their huge mark up when selling iPhones across the world.
Of course those iPhones are imported directly from China to place of sale, say the UK. But who sees the profit? An American company. _Even though_ those imports would not have counted against America's exports specifically as far as I'm aware.