STEP 4: From the drop down menu look for ‘Lock Profile’ option and click on it STEP 5: After tapping on it you will receive a confirmation message on your screen. STEP 6: Click on ‘Lock Your Profile’ to lock your profile. What happens if you lock your Facebook profile? If a Facebook profile is locked, it means that the user doesn’t want anyone out of their friend list to see their photos, posts and other details. Hence, they have chosen to lock their profile and show a limited view of their profile content to people they are not friends with on Facebook.