HTC One M9 User Manual page 70

70 Your first week with your new phone
Waking up to the lock screen
Go from sleep mode to the lock screen without pressing the POWER button.
If you've set up a screen lock with credentials, you'll be asked to provide your
credentials first before HTC One M9 unlocks.
1. Lift the phone in portrait orientation.
2. Immediately double-tap the screen.
Waking up and unlocking
Go from sleep mode and unlock HTC One M9 to the last screen you were using without
pressing the POWER button.
If you've set up a screen lock with credentials, you'll be asked to provide your
credentials first before HTC One M9 unlocks.