After a closer look at new data, Apple’s iPhone 18 Pro modem situation may not be straightforward. Here’s what the latest leaks suggest about cellular connectivity, the A20 chip, and possible camera upgrades.
On June 25, AppleInsider exclusively reported that iPhone 18 Pro schematics and documents were among more than 630GB of files allegedly taken from Tata in a cyberattack.
An initial review of the leaked material revealed Apple’s plans to use its in-house C2 modem in the iPhone 18 Pro and iPhone 18 Pro Max. However, further analysis and additional research with an analyst indicate a more complex approach.
Qualcomm vs Apple C2 modem strategy
Leaks suggest Apple may adopt a region-based and split modem strategy, where different iPhone 18 Pro models use different modem hardware.
U.S. models (with mmWave support): Expected to continue using Qualcomm modem hardware, due to mmWave requirements.
International models: Likely to use Apple’s proprietary C2 modem, which reportedly does not yet support mmWave.
Referenced Qualcomm components for the U.S. version include parts such as SDX80M and related RF modules listed in the bill of materials.
This suggests Apple is not fully transitioning to its own modem in the Pro lineup yet, mainly because mmWave support still depends on Qualcomm technology.
Interestingly, Apple already uses a mixed modem strategy across its lineup today, with some models using Apple-designed modems while others rely on Qualcomm solutions. The iPhone 18 Pro appears to extend this approach further, with regional variation becoming a key factor.
Internal hardware and regional differences
Board schematics indicate two separate logic board variants:
One for mmWave models using Qualcomm hardware
One for non-mmWave models potentially using Apple C2
There are also hints that Apple may expand regional differences beyond modems. For example, future iPhone 18 Pro models in China could shift toward eSIM support, replacing the current dual physical SIM setup.