问题
I recently notice that approximately 17 % of users with ios device have browser with strange user agent. This user agent like the Safari user agent but with slight modification: it does not contain "Safari/XXXX" string.
Example:
normal user agent of Safari:
Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5355d Safari/8536.25
user agent of browser that i talk:
Mozilla/5.0 (iPad; CPU OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A5355d
Can somebody explain me, how it can be? Which browser have this strange user agent?
回答1:
The shorter user agent comes when an ipad enters "web app" mode. This means that a phone is parsing the html only using webkit, in full screen mode, not within a safari browser window. Thus only the information about CPU version, webkit version, etc is sent along.
http://developer.apple.com/library/safari/#documentation/AppleApplications/Reference/SafariHTMLRef/Articles/MetaTags.html
Additional discussion can be found on this very similar post:
ipad user agent changes during use?
来源：https://stackoverflow.com/questions/16941347/which-browser-have-this-strange-user-agent-ios-device