Tip & How-To about Samsung 8.4 in. Galaxy Tab Pro - 16GB SM-T320NZKAXAR Black
You will have to do a factory data reset! I found when I bought this it kept playing a demo video every time I tried to close the screen. Go to settings, then general, then backup and reset. Turn off backup my data and automatic restore. Then touch on Factory Data Reset. You will have to agree to everything after it restarts but you can change these settings after you have reset your account info. This worked for me. You will loose your pics, data, and other things you have put on this device but if you transfer those dates to a SD card you can reinstall after resetting the tablet. This is the only way I found to get rid of the annoying demo video that comes with this thing.
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