Mozilla/5.0 (Linux; U; Android 0.5; en-us) AppleWebKit/522+ (KHTML, like Gecko) Safari/419.3

http://www.infinitezest.com/articles/which-web-browser-is-us...

edit: Downvotes ahoy! I'm just relaying the information I found when searching. On the Anroid-DLS wiki, it gives a very generic "based on webkit" answer, so that doesn't say much one way or t'other.

http://android-dls.com/wiki/index.php?title=Android_FAQ#Q:_W...