So, I've noticed recently that I will randomly get an error while doing different things that involve using or downloading an app/wallpaper/etc. saying "SD Card unexpectedly removed" or something similar. When I go to try download something it will say "SD Card Required for this application" I have at no point touched the the sd card, let alone the back door. If I pop the door off and take the card out and put it back in, this fixes the problem, but I really don't like doing this randomly from time to time, lol. Is this an SD card issue or a phone issue?