I'm thinking I may need to restore my Wife's iPhone. I got a AT&T Text Alert yesterday saying I was close to 4GB of my 6 GB plan. I was like there is no way. So this morning I had a chance to look at our data usage. My iPhone has used .3 gigs..., my wife's phone has used 3.7 gigs. As a experiment I had her sign on to Wifi and I am still seeing data charges from her phone as I monitor the data usage from their billing site. Should I call AT&T and see if they will adjust my data usage. I'm thinking it's a phone issue and my wife did not really use 3.7 gigs. Her monthly average for the year is .9 gigs. I will restore it this weekend to see if it fixes the data issue. But on Wifi.., You would think there would be no data passed between the phone and AT&T.