Answer to "touch screen not working"This may be an old question, but here is an answer for other axon 7 users: Your display cable may be loose, so here is a solution without opening the phone. Hold the phone upright with the screen facing towards you, then pinch up and down the right side, you may or may not hear/feel a click, if your problem is not solved, then your screen may be permanently damaged.
Answer to "Why is half of my screen not viewable due to static screen?"Hold your phone upright with the screen facing you. Pinch the right side of the phone up and down, you may or may not hear or feel a click. your display should now be working.