MacRumors13 hours ago·3 min read·medium

Apple Says iPhone 18 Pro Max Sold in U.S. Differs in One Way

Joe Rossignol

✦AI Summary

Apple has clarified that the iPhone 18 Pro Max sold in the United States uses a Qualcomm modem, while international versions feature Apple's proprietary C2 cellular chip. This discrepancy suggests Apple is still transitioning away from third-party modem suppliers while honoring existing contracts.

Why it matters

Hardware variations in flagship devices impact global performance standards and highlight the complex supply chain dependencies of major tech companies.

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As noted by Nicolas Lellouche , who writes for the French tech website Numerama , Apple has updated its tech specs pages for the iPhone 18 Pro and iPhone 18 Pro Max to clarify which models are equipped with its new C2 cellular modem and where.

Apple now says the iPhone 18 Pro has a C2 modem worldwide, while the iPhone 18 Pro Max uses the chip in every country except for the U.S.

According to a tipster known as @itspdfu , who has been digging through Apple's software updates in recent weeks, iOS 27 code reveals that the iPhone 18 Pro Max is equipped with a Qualcomm modem instead of the C2 chip in the U.S.

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