I am due for an upgrade in a few months and I am really leaning towards the new iphone. My question is...I have an unlimited family data plan, if I switch to an iphone will I be forced to change data plans? I work in litigation and I use a lot of data. My bill is already outrageous and I don't want to have to pay their ridiculous data charges on top of the $30 "smartphone data plan" charges for both phones.