Out of the blue the phone has deleted folders and some files from where they belong. Appears to be related to the internal memory, not the SD card. Example, Gallery had about 6 folers originally. Camera (on Sd card), camera (internal), Downloads, My Compass, Spy Camera Capture , etc. Suddenly only the Camera folder (on SD card) is there. In my voice recorder only voice-mail is in there (?) but no voice messages I recorded. In 'Tune In' no recordings I made are there. Now the weird thing is I have been able to find most of the missing files using a file Explorer. What happened, anyone experience this?