Apple Inc. reported its fastest quarterly revenue growth in more than three years, easily topping Wall Street estimates, after demand picked up for the iPhone and products in China.

Apple reported strong iPhone sales and rebound in revenue from China, giving a much-needed boost to two parts of the company’s business that had struggled over the past year.

Apple has been shifting production of products bound for the U.S., sourcing iPhones from India and other products such as Macs and Apple Watches from Vietnam. Still, the company h