A recent, extensive analysis of real-world cellular performance reveals a compelling narrative about Apple’s latest advancements. Data collected from millions of Speedtest users during the fourth quarter of 2025 paints a picture of surprising consumer preferences and a significant leap forward in modem technology.
The iPhone Air, Apple’s slim and streamlined offering, isn’t just holding its own – it’s thriving. The data suggests it’s proving more popular than the larger “Plus” models it replaced, and significantly outselling competing slim phones from other manufacturers. This preference is particularly pronounced in tech-forward markets like South Korea, Japan, and Singapore.
What’s driving this demand? It appears consumers are willing to invest in a refined, compact design. Despite a $100 price premium over its predecessor, the iPhone Air is generating double the test results compared to the iPhone 16 Plus, indicating a clear shift in consumer priorities.
Beyond sales trends, the report highlights a remarkable achievement in modem technology: Apple’s C1X chip. Introduced initially in the iPhone Air, and now appearing in select iPads and the iPhone 17e, the C1X has demonstrably closed the gap with Qualcomm’s industry-leading X80 modem.
Apple’s initial claims of “up to twice the speed” with the C1X were understandably met with skepticism. However, Ookla’s massive dataset confirms substantial improvements. In most real-world scenarios, the iPhone Air, powered by the C1X, delivers performance on par with the iPhone 17 Pro Max, which utilizes the Qualcomm X80.
The improvements aren’t limited to raw speed. The C1X exhibits a consistent advantage in latency – the crucial delay that impacts responsiveness – compared to both its predecessor, the C1, and the Qualcomm X80. This translates to a snappier, more fluid user experience, even under challenging network conditions.
While the C1X doesn’t support mmWave frequencies, a feature of limited global importance, its overall performance is a testament to Apple’s progress. The data reveals a significant boost in performance at the “network edge,” meaning the C1X handles weaker signals far more effectively than the previous generation C1 chip.
In ideal conditions, the iPhone Air with C1X is now capable of approaching gigabit speeds, a ceiling the iPhone 16e with the C1 often struggled to reach. This isn’t just about faster downloads; it’s about a more reliable and consistent connection, regardless of location or network congestion.
The findings suggest Apple has not only caught up to Qualcomm in modem technology but is rapidly innovating. With the potential for mmWave support in future iterations like the anticipated C2 chip, Apple is poised to become a serious contender for the leading 5G platform, challenging Qualcomm’s dominance.
For consumers, this means a future where choosing an Apple device doesn’t necessitate compromising on cellular connectivity. Apple’s commitment to in-house modem development is delivering tangible benefits, ensuring a premium experience from signal acquisition to data transmission.
