It doesn't, it gets you into the wifi network's login portal, from which you can log in and then ssl will start working. [Edited to add] The problem is that we

It doesn't, it gets you into the wifi network's login portal, from which you can log in and then ssl will start working. [Edited to add] The problem is that websites that require ssl prevent you from getting into the login portals. I have http://detectportal.firefox.com http://detectportal.firefox.com bookmarked on my phone for this exact reason.