Add Follow Button on Facebook using (Android/iphone)

*Open Facebook app.

*Sign-in to your Facebook account.

*Once the News Feed page opens up, tap the More button to go to the More page.

*Scroll down the page, and tap the Account Settings under the "Help & Settings" section.

*Once the Settings window opens up, tap the "Public Posts" category.

*From the opened Public Posts Settings page, choose the "Public" option under a "who can follow me" section to retrieve the follow button on your Facebook timeline.

Note: If you are below 18 then you will not see public post option or you will find this error "Page not found".