The glass was cracked so I brought the ProKit glass replacement on amazon. Found a tutorial on how to do it, used a blow dryer and a laser heat sensor to make sure I didn't go over 200 degrees. I stood around 150 but after getting the glass off and cleaning off the glue really quick, I popped the new adhesive on then the new screen on. I heated it up really quick so the adhesive sticks better, ran my fingers around the edge of the glass to make sure it was secure. I powered on the phone everything was great until I had to punch in my pattern lock, I didn't get really far because the phone glitched out and the touch screen nor the bottom buttons were working. I pulled out the battery, waited for a little then popped it back in and powered it on. This time the whole start up screen is glitched out, this happened one day ago. Today the phone doesn't even show a glitched out start up, instead it's all black and the volume buttons/bottom buttons doesn't work. I guess the only button working is the power button but the boots up itself after popping the battery back in. I'm going to bring it to a shop but I don't want to get ripped off so I was wondering if anyone knows about this, if I got a new LCD screen repair or Digitizer repair done would it actually work? Are those things why the screen is black and buttons don't work? PLEASE HELP!