A single dataset has turned the spotlight on a paradox: iphone air appears to be markedly more popular than the Plus model it replaced, yet Apple’s higher-tier Pro models still dominate usage by an overwhelming margin among people testing their connectivity.
What do the Q4 2025 numbers say about Iphone Air—design win, or niche upgrade?
Mobile analytics firm Ookla released a report based on iPhone 17 series owners who ran Speedtests in the fourth quarter of 2025. Within that sample, iphone air represented 6. 8% of iPhone 17 series devices. In the prior generation, the iPhone 16 Plus accounted for 2. 9%. The implication in the report is straightforward: uptake for Apple’s thin, 6. 5-inch model increased sharply compared with the larger 6. 7-inch phone it replaced.
Apple replaced its large baseline model, the iPhone 16 Plus, with the super-thin iPhone Air in its lineup last September. The Ookla figures are presented as evidence that the company’s bet on design resonated with a segment of users—at least among those who actively use Speedtest to measure connectivity.
But the same report puts a ceiling on how far that design appeal goes. Even with that increase, iPhone Air usage remains small compared with the Pro devices in the same family. In other words, design may have gained ground, but it did not rewrite the iPhone 17 hierarchy inside the sampled population.
Who is really driving iPhone 17 usage—and what is not being measured?
The strongest signal in Ookla’s split is the scale of Pro dominance. In the sample, 55. 5% of Speedtest users were running the iPhone 17 Pro Max, and 30. 6% were running the iPhone 17 Pro. Combined, that puts the Pro models at 86. 1% of iPhone 17 series phones sampled—an overwhelming supermajority of users favoring Apple’s pricier devices in this dataset.
The shift appears to have come partly from the smaller Pro model. Ookla’s data shows the iPhone 17 Pro share fell to 30. 6% from 34. 9% for the iPhone 16 Pro the prior year, while the iPhone 17 Pro Max was only slightly down year over year. The standard iPhone 17 sat at 7%, up from 5. 9% the year before.
What is not being measured is just as important as what is. Ookla’s report is limited to users of its Speedtest product, and the report itself raises the question of whether the sample is representative of the broader iPhone-owning population. In addition, the report measured a model split among Speedtest users, which may not reflect actual sales differences between models—only the subset of people running connectivity tests. The article notes that a request was made to Ookla for clarification on these numbers.
Is iphone air outperforming rivals—and where does it matter most?
Ookla’s report also compared global Speedtest usage between Apple’s slim phone and Samsung’s Galaxy S25 Edge. In that dataset, more people globally use the iPhone Air than the Galaxy S25 Edge. The gap is even wider in the United States, where Apple’s slim phone outnumbers Samsung’s handset by 3-to-1 among Speedtest users. In South Korea, described as a market with strong brand loyalty to Samsung, the gap is narrower, but the iPhone Air still leads.
Geography also appears to shape how much the slim model breaks through inside Apple’s own lineup. While the U. S. share showed a modest 6. 8% for iPhone Air among iPhone 17 series devices in the sample, the slim phone appears more popular in other countries—though the report notes it did not seriously rival the Pro models anywhere.
In the same dataset, South Korea led with the slim handset at 11. 2% of iPhone 17 series users, followed by Japan (8. 9%), Sweden (8. 6%), and Singapore (8. 4%). The report frames these figures as suggesting that buyers in those countries prioritized design over Pro-exclusive features cited in the article: an extra telephoto camera and longer battery life.
What the split suggests—verified facts vs informed analysis
Verified facts from the Ookla report and the article’s summary: Within the Speedtest-using sample, the iPhone Air share rose compared with the iPhone 16 Plus, and Pro models made up 86. 1% of the iPhone 17 series devices observed. The iPhone Air also showed higher Speedtest usage than Samsung’s Galaxy S25 Edge globally, with a particularly large gap in the U. S. sample.
Informed analysis grounded in those facts: The contradiction is that Apple’s design-led bet appears validated only within a narrow lane: it improved the standing of the large non-Pro slot that the Plus used to occupy, but it did not disrupt the Pro-heavy center of gravity. The thin model’s growth looks real in the dataset, yet the Pro supermajority suggests that “aspirational” demand—fuller-featured devices at higher prices—remains the defining pattern among these Speedtest users.
There is also a methodological tension that should temper sweeping claims. Speedtest behavior is not the same as ownership in general, and model shares inside a connectivity-testing population can be shaped by who chooses to measure performance, when, and why. That uncertainty does not invalidate the pattern, but it does limit how far it can be generalized without more detail from Ookla.
If Apple’s lineup change was intended to make the large baseline slot more compelling, the Q4 2025 Speedtest sample suggests it succeeded—yet the same evidence shows how far iphone air still has to go before it becomes more than a design-forward alternative living in the shadow of Pro dominance.
