The screen is not touchable.

@johncarloescoto sounds to me like you are saying that your touchscreen does not work at all. Replacing the complete display assembly should fix this, unless it is an issue with your main circuitboard. Either way, time to open it up and to check.

Since iFixit does not yet have a specific guide for this, uses something like this video for that. Replacement screens are readily available at many online places.

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same issues with their phone as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!