There are several ways that you can lock the touch screen of your Galaxy Tab during video playback. There are also options to completely lock the home screen without pressing the power button, in this ...

If you see the Power Button Lockout message on your HP Monitor, press and hold the power button for about 10 seconds to restore its functionality.

Learn the gestures you need to use a button-free iPhone, including how to go back to home screen, use Apple Pay and use Siri ...