im currently with no 1 so im joining At@t, im 17 and i wanna get an iphone for christmas but my dad said it would cost a ton of money because of initiation fees,how much would it cost if i just got an 8 gig i phone with 400 minutes,unlimited texting ,and 3g data thing,do i have to front like 400 dollars how much did it cost u guys to sign up the contract and about how much do u think it will be monthly?