Hope somebody might have any idea what this can be. I purchased a new iPad mini 4 when it just launched a couple of months ago, I use it for several hours a day. The odd and very annoying thing is that every night the touch screen goes crazy on me. It's all good during daytime but then at a certain point the screen loses responsiveness or becomes overly sensitive to touch. The keyboard doesn't respond properly when I type (have to press really hard on the lettters) and on websites the screen starts to zoom in and out when I for example only want to press on a link or certain text. Any ideas or should I just demand a replacement? TIA!