212937 2020-06-08 16:13:11 -0700 User-Agent on iPadOS is macOS 2020-07-23 21:34:06 -0700 1 1 1 Unclassified WebKit WebKit API Safari 13 iPhone / iPad iOS 13 RESOLVED INVALID P2 Major --- 1 goehdavi webkit-unassigned ap beidson oldest_to_newest 1660472 0 goehdavi 2020-06-08 16:13:11 -0700 It appears that by default on iPadOS, Safari requests sites as desktop (macOS). Is there a way so that we can still reliably differentiate iPadOS from macOS? 1660503 1 ap 2020-06-08 17:09:15 -0700 This is expected behavior: https://webkit.org/blog/9674/new-webkit-features-in-safari-13/ Please do not implement any "Mac" vs. "iPad" code paths, and use feature detection for each specific that your website or application needs. You are welcome to reach out for assistance via email or slack, <https://webkit.org/getting-started/#staying-in-touch> 1674352 2 goehdavi 2020-07-23 14:00:43 -0700 We use the device type and OS in logs and metrics. It's very useful for us to have this information. 1674353 3 goehdavi 2020-07-23 14:01:22 -0700 See above comment. 1674537 4 beidson 2020-07-23 21:34:06 -0700 (In reply to goehdavi from comment #2) > We use the device type and OS in logs and metrics. It's very useful for us > to have this information. We understand that. The UA string is misused for feature detection, and variance in the UA string is a huge fingerprinting vector. Both WebKit and Safari will be locking down UA strings more going forward, not less. We're happy to keep having the discussion with regards to the defaults in the WebKit open source project, but Apple's decision to share UA's on iPadOS and macOS is a vendor decision from Apple, not something from the WebKit open source project. You can file a bug with Apple if you, but this WebKit bug is not valid with regards to the WebKit open source project.