How much would it cost to get an iPhone?

How much would it be all together if I bought an iPhone 4S and activated it plus unlimited texting and Internet?

Well my step mom just got an iPhone 4(not s) for free, but when it was with Internet and stuff it's $100.00 a month, but its not unlimited. It's pretty expensive /

Get iphone 5 16 gb much better faster worth it and not that much more expencive i wouldt pay for iphone 4 or 4s more than 80

$100 for the phone + about $90 a month. It will be cheaper if you bundle it with a family plan. Straight talk, t-mobile, and virgin have the iPhone for $30-45 monthly fee, but you have to pay $550 for the phone itself. T-mobile will bill you an extra $20 a month till its paid off.