Today Apple introduced iPhone 18 Pro and Pro Max, its latest flagship models. While each Pro model is largely identical, there are two exclusive new advantages—one for each model.
#1: iPhone 18 Pro has C2 modem for cellular, while iPhone 18 Pro Max uses Qualcomm
Apple began transitioning its products to in-house cellular modems in early 2025 with the iPhone 16e. First it offered a C1 modem, then the C1X followed in the iPhone Air last fall.
Now Apple has introduced the next-generation C2 modem. It’s available in iPhone Duo and iPhone 18 Pro, but curiously is absent from the iPhone 18 Pro Max.
Per Apple’s technical specs page, C2 and the iPhone 18 Pro Max’s Qualcomm modem offer comparable specs. They both support mmWave in the US, for example.
