Opera Software unveiled Thursday a version of its Mini mobile browser for use on cellphones running on Google's Android software. Opera Mini is the world's most widely used browser on cellphones, ahead of Apple's iPhone browser, as Opera benefits from its wide offering across all key platforms, according to web statistics firm Statcounter. Google's Android, introduced only in late 2008, won 4-5 percent of the smartphone market last year, and several top handset vendors like LG Electronics and Motorola are increasingly focusing on using it.