I have an iphone that i was using under a family plan,my mom (account holder)recently took me off the plan and I want to know how i can still keep using my Iphone,I was told by ATT that i can sign up for a regular plan but will have to pay up to a 500 dollar deposit if i have bad credit,(I have bad credit)I cant afford to pay that much plus the a month.are there any other options?