Re: I crushed my s4.jpg
If the screen works (you can see all over it, even under the broken glass) and the touch part works (even touching the broken glass), all you need is to have the glass replaced.
(If you haven't done at least 2 or 3 of them already, please pay someone to do it for you. It's so easy to overheat the screen, then you need a whole new screen. Replacing that, it's easy to break other things. You could end up spending as much fixing the broken glass yourself as it would cost to buy a new S4. It's usually a lot cheaper to pay a shop to do it. It also helps if you're friendly with the people at your local cellphone shop. We'd sometimes throw in a used screen for a good customer for free. [We had a few hundred Nokia screens that we saved from damaged phones.])