iPhone 12 Pro user agent string appears unusual

Hello everyone hope this finds you well. I am using iPhone 12pro and I am based in the UK, I own my iPhone and it’s not in any way connected to any organisation but this is what it says when I look at my internet history:

Mozilla/5.0 (iPhone; CPU iF

OS 18_7 like Mac OS X)

AppleWebKit/605.1.15 (KH like Gecko) Version/26.5

Mobile/15E148 Safari/604.*


please advise, thank you in advance

iPhone 12 Pro, iOS 26

Posted on Jun 14, 2026 8:50 AM

Reply
4 replies

Jun 14, 2026 8:59 AM in response to James_fitz75UK

James_fitz75UK wrote:
Hello everyone hope this finds you well. I am using iPhone 12pro and I am based in the UK, I own my iPhone and it’s not in any way connected to any organisation but this is what it says when I look at my internet history:
Mozilla/5.0 (iPhone; CPU iF
OS 18_7 like Mac OS X)
AppleWebKit/605.1.15 (KH like Gecko) Version/26.5
Mobile/15E148 Safari/604.*
please advise, thank you in advance

Exactly where are you seeing this? Are you looking at Diagnostic Logs? If you are, they are not human readable. Only Apple has the tools to read them and that requires software only available to Apple directly.

Jun 14, 2026 9:33 AM in response to James_fitz75UK

The user agent string is being incrementally replaced with better solutions, as parsing that string was always problematic and error-prone, and was and is increasingly also a privacy problem.


Among other discussions: https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/User-agent_reduction


If you have questions about the user agent string, or other such HTTP-isms, ask away.


A semi-related confusion that arises in some of these discussions: IP address geolocation is best assumed to be accurate if it is within the same country or region. Within a country or region, geolocation can be off by hundreds of kilometers, or more. And while more accurate geolocation is technically possible to provide, that both costs the ISPs money, and — the more accurate it is — the larger the risk for the ISP subscribers becomes; stalking, theft, abusive exes, etc.

iPhone 12 Pro user agent string appears unusual

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