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A teardown of the U.S. iPhone 18 Pro Max confirmed it uses Qualcomm's Snapdragon X80 modem, despite Apple's official specifications listing its in-house C2 modem for this model. Regional differences on Apple's website corroborate this finding, with the C2 modem omitted for U.S. models. This follows a similar pattern from the iPhone 17 Pro series, which also relied on Qualcomm modems despite Apple's introduction of its C1 modem in 2025.
The reliance on Qualcomm suggests potential issues with Apple's ability to scale production or ensure performance reliability for its custom chips. While the C2 modem is used in other iPhone 18 models, this inconsistency raises questions about Apple's progress toward reducing dependency on third-party suppliers like Qualcomm, a key goal for cost control and product differentiation.
Investment implication: Apple's dependence on Qualcomm in a critical market like the U.S. signals possible delays in its vertical integration efforts, which could pressure margins and complicate its hardware strategy. For you, this highlights the need to assess Apple's ability to manage supply chain risks and deliver consistent experiences across regions.