Katarzyna Petru
New information has emerged regarding Apple's plans for proprietary cellular modems, which are set to be included in future generations of iPhones. The data comes from the company's internal code, specifically from a version of the Kernel Debug Kit for macOS that was mistakenly made public and quickly removed. The source of the information is a debug kernel package of the macOS system, intended solely for internal use. The code contains references to upcoming iPhone models and the communication chips used in them, providing a rare glimpse into Apple's plans for several generations ahead.
iPhone 17e with C1X modem, but without N1 chip
According to entries in the code, the iPhone 17e may use C1 or C1X modems; however, the latest reports indicate that Apple will choose the C1X variant. This would be an upgraded model of the first generation of the proprietary baseband, which previously appeared in the iPhone 16e.
At the same time, the device is set to be deprived of the N1 chip responsible for wireless communication. This could have real functional consequences, as the absence of N1 likely means no support for the Thread standard, even with the use of a modem designed by Apple.
iPhone 18 Pro and the uncertainty surrounding the next generation of modems
In the case of the Pro models, the situation is less clear-cut. Internal code lists the iPhone 18 Pro in separate configurations with both the C1X modem and the newer C2 chipset. This suggests that Apple is still considering whether the second generation of the baseband will be included in all hardware variants. Importantly, regardless of the modem choice, the Pro models are expected to retain the N1 chipset. This indicates a continued differentiation in the communication hardware between cheaper and more expensive iPhones.
Test configurations, not final specifications
Since the information comes directly from internal code, there is no guarantee that the described configurations will make it to the final devices. Apple often tests many hardware variants in parallel before making final production decisions.
According to previous forecasts, the iPhone 17e is expected to debut in the spring of 2026. Meanwhile, the iPhone 18 Pro and iPhone 18 Pro Max are expected to hit the market in the fall, most likely in September.
