Samsung Rant M540
You are probably going to wonder where Opera Mini 3 is. On your phone, go to your browser, search on google "opera mini 3". There should be a link to "the best mobile web browser" or something like that. Go there, scroll all the way down, click the link saying that it doesn't work. Scroll all the way down, click choose from older browsers.
The new Opera Mini 4 and 5 freezes, and is not reliable.