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.

Phone sales reached $44.58 billion, well ahead of estimates at $40.29 billion, while China delivered $15.37 billion in revenue, up 4% from a year earlier. Analysts noted that government stimulus helped lift demand during the period,

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.