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 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.

During the April–June quarter, Apple’s revenue jumped 10 percent year-over-year to $94 billion, while net income rose 9 percent to $23.4 billion. While both figures beat analyst expectations, Apple shares were mostly flat today (Aug.