So yeah. I jailbroke my phone using spirit an whatever. Browsed around cydia, found some apps, heard about MiWi, so I decided to try it out. Worked great. Used it a good 2 or 3 times. Not at long periods tho go on AT&T website today and see an extra 80 bucks added to my bill for unbilled or some kind of usage...????? I know when I use MiWi, it's either by me going to the app or just to general settings and using "Internet tethering" to tether via USB. What could b the problem..?