Just recently upgraded my iphone 3gs to the 4s, and I have been having some strange data connection issues, all of the sudden I am losing my data connection. I thought maybe it was just my 4s, but I just got my wife a 4s and shes having the same exact issues. We are both on AT&T. This also happens regardless of where we are at and how many "bars" the phone is showing. The only bandaid solution I have found is to switch airplane mode on and off, that seems to reset our connection. Anyone else have this problem?