I have my phone number in my About section and the Facebook online search engine returns simply my profile, so you understand that's the right one.
Can You Search People On Facebook By Phone Number
But here's a search I did by telephone number for somebody I'm not connected to and who doesn't have their contact number in their public profile. (Sorry for the blurring-- to protect the innocent victim of my research.).
Ways To Hide Contact Information on Facebook.
1. Once once again go to your account, click on the [Accounts] tab and select Privacy Settings link.
2. On the Privacy Settings page, scroll down and click on Customize settings link (see photo. above).
3. On the Customize settings page scroll down to discover Contact information section and it will reveal you all the contact details and whom you permit to see it.
4. Click on any among the contact information. like mobile number and select the type of people who can see/access it. If you desire to hide your contact number on facebook entirely from everyone choose Customize. (see above).
5. In the next window under Make this visible to you can select the option Only Me or the others.
Can You Search People On Facebook By Phone Number, By selecting "Only Me" youre defining that just you can see that contact info on your facebook profile, while the rest of the world will not see it at all or access from their phone book page, unless you specify specific people in the above step to see them.