You can add your phone number to Facebook, in case you forget your password and need to retrieve it. Although it is recommended to add your email address instead but adding the number is also completely safe. Here’s how to add phone number to Facebook.
Steps to add phone number to Facebook:
· Click on your profile picture.
· Go to settings.
· Under that go to personal information and then click on contact information.
· Click on add number and enter your phone number digits.
· Enter the confirmation code you must have received on your phone number.
· Then click on confirm.
Read more: find facebook account by phone number