HTC 10 Sprint - Manual (Page 26)

Set Up Your Phone 13
Turn Your Phone On
■ Press and hold the Power/Lock button on the right panel of the phone.
 Your phone will power on. Depending on the settings, you may see the lock screen.
You will feel or hear the phone vibrate when it has been turned on. The first time you turn on your phone,
it will search for Sprint service, and begin the setup application.
■ If your phone is not yet activated, see Activate Your Phone for more information.
Turn Your Phone Off
1. Press and hold the Power/Lock button to open the Phone options menu.