So I just knocked my iPad off the side and my screen went very fuzzy and the colours changed,I read this and I smacked it a few times on the back and nothing seemed to have happened,I then smacked all parts of the back of the iPad,I turned it back round and it had looked like nothing had happened however when I was scrolling down to read a few more of the suggestions,I had started panicking at this point however I was scrolling down for more for approxametly 20 seconds,I looked back at my screen to try another suggestion and then it was SUDDENLY back to normal if not better I 100% recommend trying this as it worked an absolute dream for me x