Replacement for broken screen iPhone?

I have an iPhone 5s and when I was walking it slipped out of my hand and the screen got broken badly? Can I replace it? And is it for free? Can you also replace it if it got lost or stolen? And can you upgrade it to another phone if any of these problems happen? Also the big question: If you do have to pay for replacement is it the same amount of money you bought the 5s as for replacement?

Why would it be free? You broke the screen, no one else is in charge of taking care of your stuff other then you. You can take it to an apple store to see how much it would cost to fix it.

You can go to the Apple store. No, it will cost money.