Can I upgrade my iphone 5 to an iphone 5s?

I have a white iphone 5 and the screen is cracked which is a real bummer, so I want to get a new phone. I've had my phone for a year exactly in a few days, I'm not really find of the whole phone thing and upgrading and everything.

Is it possible to upgrade my iphone 5 to a iphone 5s? Any way I can just pay less to upgrade instead of just buying a complete new phone? And do I have to wait another year for my 2 year contract to do so? BTW, my phone carrier is AT&T

You can easily upgrade from the 5 to the 5S but of course you have to pay for the device and getting it on contract is a lot more expensive in the long run than buying it outright. Honsetly, from the 5 to the 5S just isn't worth the money, you should get the screen repaired.