The comprehensive iPhone 18 Pro Max review published by TechInsights shows that a notable exception remains in Apple’s transition to its own cellular modems. According to the review, the iPhone 18 Pro Max sold in the USA uses the Qualcomm Snapdragon X80 modem instead of Apple’s new C2 modem. Apple clearly states the use of C2 modem on the official specifications page for the iPhone 18 Pro. On the iPhone 18 Pro Max side, it is stated that models outside the USA also include the C2 modem. On the other hand, the company does not clearly state in its technical specifications which modem the iPhone 18 Pro Max, introduced to the US market, uses.
This uncertainty brought about predictions that a Qualcomm modem could be used in the US version of the device. The hardware review conducted by TechInsights also confirms these predictions. The US model iPhone 18 Pro Max has a Qualcomm Snapdragon X80 modem. The same modem was previously used in the iPhone 17 Pro and iPhone 17 Pro Max models sold worldwide. Therefore, Apple has not completely switched to its own modem technology in the new generation Pro Max model and continues to maintain the Qualcomm solution, at least in the USA.
Apple C2 modem expands to more models in iPhone family
Apple’s use of its own modems has gradually progressed over the last few iPhone generations. According to the information provided in the source, the iPhone 16, iPhone 16 Plus, iPhone 16 Pro and iPhone 16 Pro Max models had a Qualcomm Snapdragon X71 modem. While Apple C1 was used for the first time with the iPhone 16e, the more advanced C1X was preferred in the iPhone Air and iPhone 17e models. iPhone 18 Pro and iPhone Duo come with Apple C2 modem. Despite this, the retention of Snapdragon X80 in the US version of the iPhone 18 Pro Max shows that the modem transition in Apple’s product range has not yet been completed for all models and markets.
Apple states that it offers artificial intelligence-supported improvements in cellular connection quality and reliability with the C2 modem. According to the information provided by the company, C2 can reach higher upload speeds compared to the previous C1X modem. In addition, the new modem operates with 15 percent lower energy consumption compared to C1X. Another notable feature of the C2 is the addition of mmWave 5G support. This support, which is not available in the C1 and C1X models, shows that an important technical deficiency in Apple’s own modem technology has been eliminated, especially in markets where mmWave 5G networks are used, such as the USA.
The fact that the C2 has mmWave support indicates that Apple has technically brought its own modem design closer to Qualcomm solutions. However, in order to make a direct performance comparison between two modems, the speed, coverage, connection stability and energy consumption results in real usage conditions must be evaluated together. Apple had previously positioned its own modems specifically on energy efficiency. Maintaining the claim of lower power consumption with C2 shows that the company has not changed its approach in this area. The fact that Snapdragon X80 was previously used in the iPhone 17 Pro series offers a mature and tested solution for Apple.
Apple has not made an official statement as to why it continues to use Snapdragon X80 on the iPhone 18 Pro Max sold in the USA. The source text suggests that this may be due to contracts between Qualcomm and Apple, but there is no confirmed information by Apple on this subject. From a technical perspective, the C2’s acquisition of mmWave support has eliminated one of the main limitations that may have previously existed for using a Qualcomm modem in the US model. However, other factors such as production capacity, supply planning, certification processes or existing commercial agreements may also be effective in modem choice. The current picture reveals that Apple is increasingly spreading its own modem technology across its product family, but the dependence on Qualcomm in the US version of the iPhone 18 Pro Max continues, at least in this generation.