Foxconn Finds EVs Are Harder to Build Than iPhones and Tablets

Over the past decade, Foxconn Technology Group has followed increasingly complex plans from Apple Inc. to turn silicon, glass, plastic, copper and other materials into hundreds of millions of iPhones. And Apple is just one of the Taiwanese company’s dozens of A-list customers; Google, Microsoft, Sony and many others have hired it to make phones, computers, tablets, game consoles, servers and more. So it’s not much of a stretch to think Foxconn might do the same for cars.

So far, though, cars are turning out to be a tougher slog than electronic gadgets.

Last year, Foxconn paid $230 million for ...