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Samsung Galaxy Tab 4 - 7" - 8GB: Juggle tasks at work and enjoy movies at home with a tablet that is portable enough for your commute and powerful enough to keep up with your busy schedule. The quad-core processor provides quick performance that your entire family will enjoy.
Sleep mode
When I press power button to turn off screen it does not go off. Does anyone know why? Battery use is much to fast with this problem. Thanks for any help.