I am 3 weeks into owning my first smartphone, the GS3 of course, and am loving every bit of it so far.. I have recently discovered just how much faster WiFi is than 3g in my area, and I am curious if it's advantageous to shut off mobile data? And if I were to shut it off, what exactly does it shut off? Would I still be able to make/receive phone calls, surf the web, check apps etc? If this has been covered before, please direct me to thread. Either way, thanks in advance!