"If that is not the case, a tariff of at least 25% must be paid by Apple to the US."Adding uncertainty to his ultimatum, Trump later said the tariff wouldn't apply to just the iPhone but also to any smartphone made outside the US.

President Donald Trump says the U.S. will delay implementation of a 50% tariff on goods from the European Union from June 1 until July 9 to buy time for negotiations with the bloc

Apple Inc. shares are coming off their longest selloff in more than three years, as escalating attacks from the White House threaten to further erode the company’s profit outlook, suggesting the stock’s struggles this year are far from over.