Hello! i've been using on and off till now my iphone minisim in my ipad first generation 3g ,i am on the datapro 2gb plan with At&t ,question is i dint receive any message till now ,i am not abusing doing that ,once in a blue moon . Question : how can At&t retaliate against that ,worse case scenario please ,and if that happend already to some of you can you please share your experiences ? , also any existing way to hide the usage of my iphone sim in ipad ? Thank you all ! whomever want to share with me your experience .