I am using Samsung Galaxy S7 edge. The phone was working perfectly until I used a tampered glass on it. After using tempered glass the touch sensitivity of the phone around the edges has decreased. I am afraid that if I won't use tempered glass the screen will gat scratches. Which tempered glass should I use so that touch sensitivity is not affected? Is there any problem if I don't use a tempered glass at all? Please give solution to my problem!