Usage data published by StatCounter (via Cult of Mac) for January 2026 indicates that only around 15 to 16% of active iPhones worldwide are running any version of iOS 26 . The breakdown shows iOS 26.1 accounting for approximately 10.6% of devices, iOS 26.2 for about 4.6%, and the original iOS 26.0 release at roughly 1.1%. In contrast, more than 60% of iPhones tracked by StatCounter remain on iOS 18, with iOS 18.7 and iOS 18.6 alone representing a majority of active devices.
Historical comparisons highlight how atypical this adoption curve appears. StatCounter data from January 2025 shows that roughly 63% of iPhones were running some version of iOS 18 about four months after its release. In January 2024, iOS 17 had reached approximately 54% adoption over a similar timeframe, while iOS 16 surpassed 60% adoption by January 2023.
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In the first week of January last year, 89.3% of MacRumors visitors used a version of iOS 18. This year, during the same time period, only 25.7% of MacRumors readers are running a version of iOS 26 . In the absence of official numbers from Apple, the true adoption rate remains unknown, but the data suggests a level of hesitation toward iOS 26 that has not been seen in recent years.
I want to believe this is because people are choosing to avoid Liquid Glass, but the difference in curves is so stark that I assume it must be due to a measurement problem or a change in how strongly iOS’s Software Update is pushing new versions.
This, even given that Apple has made the 18.7.3 installer [and its security fixes] unavailable for anyone not an Apple Developer and in the beta program.
Previously:
Update (2026-01-12): Jeff Johnson (Mastodon):
The MacRumors stats appeared to provide some independent support for the StatCounter data. I made the mistake of starting to believe the story based on this, without checking the facts myself. In my defense, I’m not a news media outlet, so that’s not my job, and moreover I didn’t publish an article about iOS 26 adoption, until now.
The only site that got it right, eventually, is Pixel Envy by Nick Heer, who pointed out that the Safari browser User-Agent was partially frozen on iOS 26, as discussed in a September WebKit blog post[…]
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Although Apple forces all web browsers on iOS to use WebKit, the User-Agent OS version is frozen only with Safari, not with other browsers, so third-party browsers still accurately report the iOS version.
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By the way, I’m a bit puzzled by Apple’s partial freezing of the Safari User-Agent on iOS, because Safari is always inseparable from the OS, so it’s possible to derive the iOS version from the Safari version, which continues to be incremented in the User-Agent.
I was curious about iOS 26 adoption for NetNewsWire. I looked at the 30-day-active-users numbers, separated by iOS version.
Current adoption is 84% for iOS 26.
I’m slowly getting to the point where I realize that it’s close to impossible to have an app that works reliably both on iOS 18 and 26. Something is always broken. You fix one thing, it breaks something else. Apple’s solution is obviously to support 26 only, but I’m not doing them this favor.
Update (2026-01-14): Nick Heer:
Even though third-party browsers are available on iOS, most users browse the web through Safari. And that means StatCounter is almost certainly counting the vast majority of people on iOS 26 as iOS 18.7 users. I retrieved those user agent strings using StatCounter’s detection utility, which is how it says you can validate the accuracy of its statistics. And it seems they are not. (I asked StatCounter to confirm this but have not heard back.)
The actual rate of iOS 26 adoption is difficult to know right now. Web traffic to generalist websites, like the type collected by StatCounter, seems to me like it would be a good proxy had its measurement capabilities kept up with changes to iOS. Other sources, like TelemetryDeck, indicate a far higher market share — 55% as I am writing this — but its own stats reported nearly 78% adoption of iOS 18 at this time last year, far higher than StatCounter’s 63%. TelemetryDeck’s numbers are based on aggregate data from its in-app analytics product, so they should be more accurate, but that also depends on which apps integrate TelemetryDeck and who uses them. What we can see, though, is the difference between last year and this year at the same time, around 23 percentage points. For comparison, in January 2024, TelemetryDeck reported around 74% had updated to iOS 17 — iOS 26 is 19 points less.
If its reporting for this year is similarly representative, it likely indicates a 20-point slide in iOS 26 adoption. Not nearly as terrible as the misleading StatCounter dashboard suggests, but still a huge slide compared to prior years. Apple will likely update its own figures in the coming weeks for a further point of comparison.
I don’t think 15% is remarkably high for third-party browsers on iOS 26. Heer pointed me toward the Cloudflare statistics for market share by OS, which put Safari at 78%, leaving 22% for other browsers, led by Chrome. If 68% of those users have updated to iOS 26, that would amount to a 15% market share for third-party browsers on iOS 26.
Update (2026-01-23): Nick Heer:
On Friday, I received an email from Aodhan Cullen, CEO of StatCounter, confirming iOS 26 users had been incorrectly counted as iOS 18.x in its analytics software and, accordingly, in its public trends. Cullen said the company was working on a patch. According to a note pinned today to the top of its iOS version chart, corrected reporting only began rolling out yesterday. However, because this chart represents a version share breakdown for a month that is mostly behind us, more accurate figures will start becoming noticeable in February.
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The second is by way of Timo Tijhof, principal engineer at Wikimedia, who points me to Wikimedia’s network-wide stats showing, as of 11 January, around 50% of “Mobile Safari” visitors were using iOS 26, compared to 41% using iOS 18. […] In the week of 12 January 2025, for example, nearly 72% of visitors were using some version of iOS 18, then the most recent. The week of 14 January 2024, over 65% were using iOS 17.
iOS iOS 26 Liquid Glass The Media