Scrolling down at random and the only thing that will stop it for a little bit is pushing the SD card either In or out. Also stopped when the operating system prompted me to close or wait for app " phone" do I have a bad SD card.. bad refurbished phone.. am i going to switch back to a old Verizon phone? Help it makes it impossible to use while this is going on. I also reset all setting on sd card and phonne.. thanks