HTC Sprint One M8 User Manual page 32

2. Immediately double-tap the screen.
Make sure you're not touching the screen when the phone vibrates.
Wake Up and Unlock the Screen
1. Lift the phone in portrait orientation.
2. Swipe up the screen right away. You need to start swiping from the bottom half of the screen.
Make sure you're not touching the screen when the phone vibrates.
Wake the Phone Directly to HTC BlinkFeed
1. Lift the phone in portrait orientation.
Phone Basics 19