I am not sure if this is the right place to post this but I will do it anyway. I have a Kindle Paperwhite, the previous generation one. What happens is that when I read and tap the screen sometimes the Kindle goes from 91% to something like 24%,. This does not happen often as it used to after I contacted Amazon and spent something like an hour trying to fix it. If I turn the top left hand side it goes back to the correct place.