At&t has charged me for data I did not use. First Id like to say that I have the iphone 4s and it allows me to turn of the cellular data. I keep my phone on Wi-Fi most all of the time and always keep the cellular data off. My phone shows me how much data I have used too and It still says I have only used 553mb of data usage. My problem is I went to sleep and my cellular data was turned off. I wake up in the morning with 2 new texts saying that I have used all of my data, and on top of that I had another text that said for twenty dollars we can give you more data. Heres the kicker, they charged me the twenty dollars to add more usage all while I was asleep! Can anyone please make sense of this? I contacted at&t and they were no help insisting that I had used this data. Like I said my data still says I have only used 553mb. Before anyone says someone may have grabbed the phone and been using it, Its not a possibility.