President Donald Trump has threatened Apple with a tariff of “at least 25 percent” just for its iPhones unless it moves production to the United States.

“I have long ago informed Tim Cook of Apple that I expect their iPhone’s that will be sold in the United States of America will be manufactured and built in the United States, not India, or anyplace else,” Trump wrote on Truth Social. “If that is not the case, a Tariff of at least 25% must be paid by Apple to the U.S. Thank your for your attention to this matter!”

The threat comes a week after Trump declared that he’d “had a little problem with Tim Cook,” following reports that Apple intends to source all of its US iPhones from India. Apple’s aim is to circumvent higher tariffs on products shipped to the US from China, which will require ramping up Indian production. According to the Financial Times FoxConn, Apple’s main manufacturer, is developing a $1.5 billion plant in southern India’s Chennai to supply iPhone displays.

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