Hi, I have a curved(U-shaped) 3/4 inch crack on the top right of my ipad screen. Thankfully the crack is on the bezel part so it's not bothering me. Can the crack increase in time? Is there a way to prevent it from getting bigger. I can feel the sharp edge when I run my finger over it. I have applecare and was going to actually go in for a home button that works about 75% of the time. It's very irritating. Will the crack affect any warranty issue I have on home button replacement or repair? I don't want to spend any more money as I want to invest in the next mini or air. I think it's $50 fee or $75 with applecare for screen replacement, right?