Interesting question. I checked my two browsers (stock Internet that came installed and Dolphin) to see if either had something in their Settings menu to allow you to set it as the default browser...no joy. Did the same on my Galaxy Tab 7.0 Plus which has ICS (my GN has JB) to make sure it wasn't a Jelly Bean thing...same story. The only way I can think (there's probably another way of which I'm unaware) to set one as a default is to open an email in which a link to a web page is embedded (send one to yourself if you must). When you click on that link, you should get a box that asks which browser to use and whether or not to make it the default. I haven't tried this method but if I'm correct, then when you go to the Application Manager in the GN's Settings, the "Remove Default" button should be enabled. Let us know if this works. Good luck.