How do I set screen lock?
In order to protect your personal information, you can adjust your phone’s lock settings by going to “Settings” -> “Security & location” -> “Screen lock” ->Touch the type of lock you would like to use. After you set a lock, a lock screen displays whenever your screen is woken up, requesting pattern, PIN, or password. Notes: Screen lock options are listed in the approximate order of the strength of their security, starting with “None” and “Swipe”, which provide no security. Make sure you remember the pattern, pin or password you set to have access once the screen lock is set up.