So i had my iPhone running on the 14.99 a month iPad 3g plan and then at&t changed something a while back and now my service is gone. You now need an official iPad imei to activate the service. I have a buddy who has an iPad 3g and is willing to let me use his imei number. If i use it will at&t cut us both off? can you only have 1 plan per imei? thanks 