Even with a 25% tariff, the numbers still favor India. A $1,000 iPhone made in India would incur a $250 tariff. Add that to the $30 assembly cost, and the total is $280—still far cheaper than U.S. assembly alone.

Apple Inc. has become a frequent target for attacks by President Donald Trump, a factor that has held the stock back as other big tech companies have rebounded over the past month.

President Donald Trump threatened the European Union with 50 percent tariffs. More tariff turmoil: Trump is also waging war on Apple, threatening 25 percent tariffs if it doesn’t shift iPhone production to the United States — that could mean price hikes. Stock markets fell slightly with the news.