Apple Inc.’s much-awaited quarterly earnings report failed to soothe investor concerns about its biggest challenges, including escalating tariff costs and a slowdown in China.

Although Apple is an American company with its highest sales coming from the U.S. market, especially regarding iPhones, the tech giant produces most of its technology abroad. Around 80% of Apple's products are manufactured in China,

With the iPhone 20-year anniversary fast approaching, Apple will need to rely on China to develop this complex product.