My phone always on and off it's happen suddenly

@berydole all of this sounds like you have a bd screen. Those colored lines and ghost touchin would lead me to replacing the display. Since ifixit does not yet have a guide for this, use the one from here It is written in Spanish so use a browser that does a translation for you, if needed. Replacement screens are readily available at many online stores.

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 problem 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!