Update Feb 2020: This feature is gone. However, if you wish to delete all the uploaded contacts from your phone to Facebook then follow this link to delete it: https://www.facebook.com/contact_importer/remove_uploads.php
Did you know that there is a dedicated page on Facebook called Facebook Phonebook with the list of your friend’s phone numbers on FB?
It has a full list of all the phone numbers including Landline, Mobile on a single page!
You need to be logged onto Facebook before visiting the below link. It will show your friend’s profile pic along with their phone numbers.
It’s very easy to access the Facebook Phonebook link:
So the next time you lose your phone come to visit this page to get the numbers haha. And don’t forget to poke your friends on Facebook Poke!