Apple plans to utilize a dual-modem strategy for the upcoming iPhone 18 Pro and Pro Max, according to leaked schematics obtained during a cyberattack on supplier Tata. While US models will retain Qualcomm modems to maintain mmWave 5G connectivity, international versions are expected to feature Apple’s proprietary C2 modem. Documents further indicate a shift in camera hardware, with both Pro models likely adopting a new Sony IMX905 sensor.
Why is Apple splitting its modem strategy?
The primary driver for the split between Qualcomm and Apple-designed hardware is mmWave 5G compatibility. According to the leaked documents, Apple’s internal C2 modem technology currently lacks support for the high-frequency mmWave spectrum required by US carriers. Consequently, Apple will continue to source Qualcomm modems for the US market to ensure full network performance. In other regions, the company will transition to its own C2 modem, marking a significant step in Apple’s long-term effort to reduce its reliance on third-party silicon suppliers.
Apple’s current hardware lineup already features a mix of modem technologies. The iPhone 17e and iPhone 17 Air utilize Apple-branded modems, while the iPhone 17, 17 Pro, and 17 Pro Max continue to rely on Qualcomm hardware.
How will the camera hardware change?
The leaked schematics identify a new camera sensor with the ID 0x905, a departure from the 0x903 sensor found in the iPhone 17 Pro. Industry reports suggest this 0x905 designation refers to a custom-developed Sony IMX905 sensor. This hardware upgrade aligns with previous industry rumors that Apple intends to introduce a variable aperture main camera on its high-end iPhone 18 models, potentially offering users more control over depth of field and low-light performance.
Are there changes to SIM card technology?
Apple is reportedly preparing to introduce eSIM support for the iPhone 18 Pro and Pro Max in China, according to the leaked schematics. Currently, iPhones sold in the Chinese market are limited to two physical SIM card slots and do not support eSIM functionality. Expanding eSIM capabilities would bring the region in line with international iPhone models, potentially simplifying travel and connectivity for users in the Chinese market.
Comparison of Modem and Camera Trends
| Component | iPhone 17 Series | iPhone 18 Pro Series (Projected) |
|---|---|---|
| Modem | Qualcomm (Pro models) / Apple (Air/17e) | Qualcomm (US) / Apple C2 (Global) |
| Camera Sensor | Sony 0x903 | Sony 0x905 (Custom) |
Frequently Asked Questions
Will all iPhone 18 Pro models use the same modem?
No. According to the leaked documents, US models will use Qualcomm modems for mmWave support, while global models will transition to Apple’s own C2 modem.
What is the benefit of the new Sony IMX905 sensor?
The sensor is linked to rumors of a variable aperture system, which would allow the camera to adjust its physical opening to improve image quality in varying light conditions.
Is eSIM coming to China?
Leaked schematics suggest Apple is planning to introduce eSIM support for the iPhone 18 Pro series in China, replacing the current limitation of dual physical SIM slots.
What are your thoughts on Apple’s move toward proprietary modems? Are you interested in seeing variable aperture cameras in future iPhones? Join the conversation in the comments below or subscribe to our newsletter for the latest hardware updates.
