Facebook helps you connect to people across the globe. It provides with a variety of features including the ones related to your privacy. If you’re wondering, why Facebook profile lock is not available. Then you should be relived to know that Facebook does allow you to lock your profile. Where only your friends can view the latest updates and not everyone can stalk you. You can lock your profile on any device through the app or accessing it through the browser. Here’s how to lock Facebook profile in iPhone. Log in to your Facebook account on your iPhone and click on the three dot on the side. You will see a lock profile option. When you click on it, this will direct you to another page where you can confirm by clicking on the lock profile button.