I have my telephone number in my About area and the Facebook search engine returns simply my profile, so you understand that's the best one.
Find Facebook Page 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 phone number in their public profile. (Sorry for the blurring-- to secure the innocent victim of my research study.).
How to Hide Contact Information on Facebook.
1. Once again go to your account, click on the [Accounts] tab and select Privacy Settings link.
2. On the Personal privacy Settings page, scroll down and click on Customize settings link (see pic. above).
3. On the Customize settings page scroll to discover Contact info section and it will reveal you all the contact info and whom you allow to see it.
4. Click any among the contact details. like mobile number and choose the kind of individuals who can see/access it. If you wish to hide your contact number on facebook totally from everybody select Customize. (see above).
5. In the next window under Make this visible to you can pick the choice Just Me or the others.
Find Facebook Page By Phone Number, By picking "Just Me" youre defining that just you can see that contact information on your facebook profile, while the rest of the world will not see it at all or access from their phonebook page, unless you specify specific individuals in the above action to see them.