So today I got my bill and there is a an extra 50 bucks charge on it. Called tmobile and they told me your iphone has been using a data plan, I said I don't use the data plan and I never activate the lady said do you use wifi? I was like yeah... she said well yeah there was an update that T mobile users with Iphone that use wifi will get charged with data plan... WTH is up with that.... Is there any way around this?