US President Donald Trump on Friday threatened Apple and other smartphone manufacturers with a 25 percent tariff unless their devices are built in the United States. Trump initially said the tariff would apply only to Apple — an unusual move to single out a specific company in trade policy.

"I expect iPhones that will be sold in the United States of America will be manufactured and built in the U.S."

Here is what to know about the move against Apple and what this could cost consumers in the coming years. Why is Trump putting tariffs on Apple? Part of Trump's goal with increasi