How does 2 year contract for an iPhone 5s work with AT&T?

Hi, I'm 16 and planning to ask my brother for a phone, but he's not going to pay 500$ for a phone for me. How does a 2 year contract work with phones? I know you get the phone for a lot less than the original. But I want to know is how much do you pay throughout the 2 years?

You actually pay more for the phone on plan over the 2 years than what it would cost to buy it outright, plans just aren't worth it honestly! I'm on a plan (contract) for an iPhone 6 plus right now. My mum pays $130 a month for it (I'm IN AUSTRALIA BY THE WAY) and she's going to be paying close to 2k by the end of the 2 years. They're like $1400 max brand new. Goodluck with it all though

Depending on what type of plan you have, if you get the phone with a 2 year contract your plan rate will go up. If you have a mobile share plan your best off getting the phone with at&t next. If you still want to go with a 2 year contract the only way you'd be able to order it is online. Go too the att.com website and it will show you the prices. But trust me at next is cheaper than a 2 year contract. If you are unsure of your plan or new to att just call 18003310500

Through the monthly bill, like pretty much any cell phone purchase.