I already know, thanks to reading other posts, that if I don't have a cellular iPad Mini, I don't have GPS. Questions related to GPS types, usage, and cellular carriers for the iPad Mini: 1) Is the GPS chip 'model' also carrier-dependent? i.e.., Does a Verizon-carrier iPad Mini's GPS chip differ from an AT&T-carrier iPad Mini's GPS chip? 2) Let's say that I have a Verizon-carrier iPad Mini but no Verizon contract or cellular access. However, I can wifi-tether the Mini to my iPhone5 which is on an AT&T contract. Will the GPS still work for directions given that I only have a WiFi connection to my iPhone5 active? 3) Are there any 'gotchas' that you think I should know if I'm asking these questions?