> **Possible Duplicate:**  
> [What mobile browsers for testing?](http://webmasters.stackexchange.com/questions/20933/what-mobile-browsers-for-testing)  

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Where can I find more detailed mobile usage statistics so I know which devices to test on? 

This link gives info by OS, but not by version. 
http://gs.statcounter.com/#mobile_os-ww-monthly-201009-201109 

For instance in the UK BlackBerry is quite popular, but I don't know what age of device I don't need to test on.