Learn how to use Sleep Mode on your HTC One M8. Sleep mode saves battery power by putting HTC One into a low power state while the display is off.
HTC One has onscreen navigation buttons at the bottom of the screen which rotate when you change the orientation.
Swipe up from any of the navigation buttons to access Google search.
Sleep mode saves battery power by putting HTC One into a low power state while the display is off. It also stops accidental button presses when HTC One is in your bag.
To turn off the display and switch to Sleep mode, you can:
HTC One also automatically goes into Sleep mode when its left idle for a while. You can change the time before HTC One sleeps by setting the screen timeout.