I have Sprint iPhone 5 I want the 5S I got my phone 3 months ago?

I have Sprint iPhone 5 I want the 5S I got my phone 3 months ago.

Can I. Should I. Sell my 5 and get a 5S or will Sprint frown on that?

I want a 5S because I could benefit from the better camera on tie 5S.

You'll be on a contract with Sprint now for probably a further 21 months, you need to check your contract. The only way you will get a 5S from Sprint is if you settle your existing contract first, and that will cost you alot of money.

The camera is only marginally better from the 5 to the 5S… You aren't missing out on much. There's no way to upgrade your phone only three months into contract.