Since your phone is with you at all times, the likelihood of it getting left behind at a bar, restaurant, gym, or other location that you previously visited is probably pretty high. And since we live in a world that isn’t always filled with angels, the chances of that left-behind-phone getting stolen and fondled deeply without your approval is probably even higher. Your first line of defense against evil doers is your lock screen. Get a list of lock screen security options for your handset here