There is no "force shutdown" as far as I know, but you can force a reboot by holding down the power button for about 15 seconds. By Dan Gookin. Most often, you will just put your Samsung Galaxy Tab to sleep. Or it will go to sleep on its own, because you didn't pay enough attention to it. I was boosting my Samsung tablet E with an app and it won't stop. I can't turn it off , I can't go backwards, I literally can't do anything with it.
Learn how to use safe mode on the Samsung Galaxy Tab 4 using the hardware keys. On this page: Turn on and use safe mode Turn off safe mode Turn on. A tutorial about how to turn Safe Mode off or on for the Samsung Galaxy Tab S3 tablet. Use the Safe Mode feature on the Samsung Galaxy Tab A to start the Android OS with the system default software. Safe Mode provides access.
Power saving mode (extended standby mode) optimizes battery life on your Samsung Galaxy Tab S LTE. When the screen is off, your tablet will save power. Press and hold the Power/Lock key for one or two seconds to turn on the device. On my Samsung Galaxy Tab 4 Home screen how do I know how many apps. When silent mode is turned on, all tablet sounds are turned off. Android phones with Android version and higher (Ice Cream Sandwich), like Galaxy Note II, Galaxy S II, Galaxy S III, Nexus device, HTC handset or Motorola.