How to get 4g on the iPhone 5?

So I got the iPhone 5. I had an upgrade and decided it sounded promising. It works well but the only thing is I can't find out where on the phone to activate 4g. Also I come to find out that it may not be offered yet which sucks. Shouldn't my carrier which is sprint by the way be able to offer it right away I had 4g with my last phone and it worked fine.

Step 1) Go to Settings - General - Cellular - Enable Cellular and LTE
Step 2) Check with Sprint to make sure you're on a 4G LTE plan and that you're located at a region supported by 4G LTE.

This really depends on your carrier and where you're located. Not everywhere is covered by 4G LTE even if your carrier offers the service…

Sprint's 4g LTE at present is pretty much non existant.
It'll take them some time for them to reach where verizon and at&t r presently.