Unhappy that Apple intends to source nearly all of its U.S. iPhones from India, President Donald Trump on Friday threatened a 25% tariff on the popular device unless the tech giant moves production to the United States.

The threat delivered over social media could dramatically increase the price of iPhones. Trump also threatened a 50% tax on all imports from the European Union.

Donald Trump woke up Friday morning and threatened Apple with a 25 percent tariff on any iPhones sold in the US that are not manufactured in America. In a Truth Social post, Trump claimed that he had "long ago" told Apple CEO Tim Cook that Apple's plan to manufacture iPhones for the US market in India was unacceptable.