The iPhone Air comes with the C1X modem. | Image by PhoneArena
More often than not, we, the tech fans, are obsessed with chipsets (for the ultimate performance), batteries (10,000 mAh+ capacity, if you please!), super-bright displays or quad-camera setups with hundreds of millions of pixels and large apertures. That's fine and all, but at the end of the day, aren't we forgetting a phone's primary purpose? That's to keep us connected.
This is where modems come in – of what use would a blazing-fast processor be if your connection isn't particularly good?
Apple has gone to great lengths to cut its Qualcomm reliance over modems… and has largely succeeded, the latest Ookla findings show clearly.
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A big upgrade
Back in 2025 when the iPhone 16e was launched, it arrived with the C1 modem under the hood. The C1 is Apple's creation, not Qualcomm's – and like almost all first-gen products, it had its fair share of shortcomings and hiccups. The C1 clearly lagged behind its Qualcomm counterparts.
Mere six months later, when the iPhone Air arrived (this happened in September 2025), it showed off the C1X – another Apple-made modem, but this time, the project was executed with greater success. Maybe Apple wasn't convinced about the C1X, because it equipped the iPhone 17, the iPhone 17 Pro and the iPhone 17 Pro Max with the Qualcomm X80 modem.
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Ookla compared these and the findings show that the C1X has largely caught up with Qualcomm in terms of performance.
Speed tests results in the US. | Image by Ookla
While Apple's C1X modem in the iPhone Air is not as powerful on paper as Qualcomm's X80 modem in the iPhone 17 Pro Max, in everyday use the difference is much smaller. Tests that examined the best, average, and worst network conditions show that the C1X is a big improvement over Apple's earlier C1 modem.
The median results represent what most people experience daily, such as normal network congestion and average signal strength. The improvement was especially noticeable in places like the US, UAE, Saudi Arabia, China, Sweden, Singapore, and Japan, where the modem handles mid-band 5G more efficiently during busy hours. However, the C1X showed little or no improvement over the C1 in Brazil, India, and Malaysia. This likely happens because those markets rely more on low-band 5G or have heavier network congestion, which limits the modem's advantages.
Have you experienced modem issues with the iPhone 16e?
Interestingly enough, when it comes to latency, the iPhone Air outperformed the iPhone 17 Pro Max in most markets. The iPhone Air showed lower latency than the Qualcomm-powered iPhone 17 Pro Max in 19 of the 22 markets that were tested.
The results could mean that Apple's closer integration between its modem and processor helps deliver a quicker and smoother experience.
So, maybe one should get the iPhone 17e over the iPhone 16e in the US. Of course, if you can wait another six months, it's best to see what Apple's C2 modem will be like in the iPhone 18 Pro. It seems that Apple will be waving Qualcomm goodbye sooner… rather than later.
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Sebastian, a veteran of a tech writer with over 15 years of experience in media and marketing, blends his lifelong fascination with writing and technology to provide valuable insights into the realm of mobile devices. Embracing the evolution from PCs to smartphones, he harbors a special appreciation for the Google Pixel line due to their superior camera capabilities. Known for his engaging storytelling style, sprinkled with rich literary and film references, Sebastian critically explores the impact of technology on society, while also perpetually seeking out the next great tech deal, making him a distinct and relatable voice in the tech world.
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