Apple rumored to introduce its new C2 modem in the iPhone 18 Pro models

Apple is reportedly preparing to introduce its second-generation in-house 5G modem, the C2, with the iPhone 18 Pro and iPhone 18 Pro Max in 2026. This follows the debut of the company’s first proprietary modem, the C1, in the iPhone 16e. While the C1 serves as a test for Apple’s modem technology, it is not yet featured in high-end iPhones. Instead, Apple continues to rely on Qualcomm for its flagship devices, but that could change with the iPhone 18 Pro lineup.

The transition from Qualcomm modems

Apple’s C1 modem uses a mix of 4 nm and 7 nm baseband components, with a 55 nm Power Management Integrated Circuit (PMIC). While it is energy efficient and performs well in most cases, it lacks mmWave support, which is crucial for ultra-fast 5G speeds in some regions. Because of this, Apple has decided to keep Qualcomm’s modems in the iPhone 17 Pro series.

However, Apple appears confident in its upcoming C2 modem, which could make its way into the iPhone 18 Pro models. Analyst Jeff Pu of GF Securities recently reported that Apple’s C2 modem is expected to be exclusive to the Pro versions of the iPhone 18, while the standard iPhone 18 might still rely on Qualcomm or adopt the C1 chip.

Apple is reportedly planning to expand the use of its in-house modems beyond the iPhone. Apple may integrate the C1 chip with the ultra-thin iPhone 17 Air, but it may reconsider if there is a need for further refinements. There is also speculation that Apple could bring its own modems to other products, such as cellular-enabled iPads and Apple Watches, before fully replacing Qualcomm modems in all iPhone models.

Challenges and future integration

Despite Apple’s progress, it is still working toward fully integrating its modem technology into its A-series chipsets.  The C1 is still a separate part, and while later models may integrate into Apple’s chips, this change is not likely to happen soon.

Apple’s modem development represents a strategic shift aimed at reducing its reliance on Qualcomm while optimizing power efficiency and network performance. However, Apple is likely to proceed cautiously to ensure its technology meets the high standards required for flagship smartphones. As more details emerge, it will become clearer whether the iPhone 18 lineup will mark a significant step in Apple’s modem independence.

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