This just happened today never had this problem. Its a new phone got it from apple as a replacement for my old phone. NEVER DROPPED IT..and NEVER SPILLED ANYTHING ON IT! All of a sudden I go to unlock it by punching in my numbers and it starts getting this gray screen you can kind of see my background but only because its like staticy and glitchy in and out! So I reboot it and it doesn't show an apple just a gray screen and then when it loads it turns white and purple and blue glitchy rainbow moving up in down, after awhile it will do the gray glitch thing and you can see a little bit of my background. If I press on the top right corner of my phone the screen may come back for a half a second and then glitch again. I PROMISE I HAVE NOT DROPPED OR SPILLED ANYTHING ON THIS PHONE I GUARD IT WITH MY LIFE! I really need help im freaking out!! I FORGOT TO MENTION THAT ALL THE BUTTONS WORK JUST FIND THIS IS AN IMAGE PROBLEM! I found out that some apps are clearer than others..there is still glitches like the image is in and out from gray to the actual image but idk what is going on..I really need help!