My iphone 5s display is messed up?

I have an iphone 5s and its a little over a year old and i cracked it about two weeks ago and up until now i haven't had any problems w the display but just a few minutes ago the screen started doing things by itself and itll type things and it scrolls up and down and hits the space bar all the time and i don't really know what to do given that my phone won't really function right now

Take it to the Apple Store so that an expert will be kind enough to describe what is happening and might be able to help you in a expert way.

Go to Mobile store

Hate to be the bearer of bad news but this happened to me as well. Your only option is to take it to the apple store (or a random phone screen repairer if you want to save some cash) The reason it is happening is because you cracked the screen and kept using it if you got it fixed as soon as it cracked it would be easier and cheaper to fix. Your gonna have to get a new screen because the touch feature (which is suppost to pick up identified touches) is thinking the crack in the screen is a touch and therefore moving things around every where. Sorry man but there's no DIY fix to this.

It 's more expensive taking it to apple store, you can buy the parts online and repair it yourself from hcqs.cc