I have iphone4s. I do not have a contract to use Internet on the go. 3G is usually switched off, but had to turn phone off when I went abroad. Now 3G comes on and I have had to turn off Data Roaming as well as 3G. Can't receive texts until I get home
Problems with unwanted 3G, Data Roaming needs to be turned off in order to use text messaging away from home.
iPhone 4S