Keyboard always appearing in background

On my recently purchased Iphone6, there seem to always be a keyboard visible in the background. I am able to discern other application images, although all applications are closed. This is only visible to someone looking at the screen: I have taken screen shots, but the keyboard (and other images in the background) do not appear on the picture taken. I reduced "transparency" in settings, but it did not help. Anyone else facing this issue?