What is the name/version number of the stock browser that comes on Android 2.3? I am doing research on mobile web design for an upcoming project and part of what I need to find is the marketshare of mobile browsers so we can determine which ones we will support. I have found statistics of mobile browser marketshare but I now need to clarify exactly what I am seeing. 

I see statistics for "Android Browser 4.0" and I assume it is the stock browser for Android 4.x devices. But if that were true I would expect to see statistics for an "Android Browser 2.0" or "Android Browser 3.0" in the statistics but I do not. I can't imagine that all Android 2.x users don't surf the Internet or use non-default browsers so it appears that my assumption is incorrect.

So what is the name/version number of the stock browser in Android 2.3 (or all 2.x) devices?
Please see this link on wikipedia:  http://en.wikipedia.org/wiki/Android_version_history

See usage share wikipedia reference, obtaining user agent and application is not straight forward.


Many Android browsers identify themselves as Safari on iOS (among
other things) in order to aid compatibility
Many Linux Browsers identify themselves as Safari on Mac OS X
(among other things) in order to aid compatibility


When I  use Dolphin my user agent does not show anything resembling Gingerbread 2.3.4 or my browser.  The following is by default though I can change my user agent that's part of using a browser.

Dolphin showing as a mobile device:
User Agent: Mozilla/5.0 (Linux; U; Android 2.3.4; en-us; A1_07 Build/GRJ22) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

Dolphin with user agent as desktop:
User Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_3; en-us) AppleWebKit/533.1 (KHTML, like Gecko) Version/5.0 Safari/533.1

For the default Android browser on my tablet:
User Agent: Mozilla/5.0 (Linux; U; Android 2.3.4; en-us; A1_07 Build/GRJ22) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1

And for Firefox
User Agent: on my tablet
Mozilla/5.0 (Android; Mobile; rv:31.0) Gecko/31.0 Firefox/31.0

http://en.wikipedia.org/wiki/Usage_share_of_web_browsers
http://en.wikipedia.org/wiki/Browser_sniffing

To go much beyond general user oriented information/interest, you would have find out more from developers.