Hack, how to Lock Facebook Profile step by step process.

Please do this steps in Messenger or in Facebook Mobile app. 

STEP 1

Click on top right corner as shown in the pic.

 

STEP 2

Scroll down the page.

 
STEP 3

After scrolling down, you will see help center.

 
STEP 4

Click on help center.

 
STEP 5

Search box will open, click on it.

 STEP 6

Type Profile Locked on the search box and click on How do Locked profiles work.

 STEP 7

Scroll down below the description of "How do Locked profiles work"

 STEP 8

After scrolling down you will see, Tap here option. Click on it.

 
STEP 9

You will see this page after clicking on Tap here. Go down in this page.

 
STEP 10

Click on Lock your Profile blue button.

 
STEP 11 (Profile Check)

Now go to your profile, you will see , Your profile is Locked in blue shaded format as shown in picture.

 

Job Done! Enjoy the privacy. And keep your picture safe from anonymous folks. Be safe.