Why am I being Asked to Add my Phone Number to my Account

Why am I being Asked to Add my Phone Number to my Account?

Adding a phone number to your account:

• Helps keep your account secure
• Makes it easier to connect with friends and family on Facebook
• Makes it easier to regain access to your account if you have trouble logging in

If you see a number suggested for you when we ask you to add your phone number, it will only be added to your account if you choose to confirm and verify it. A suggested number may be based on:

• Your phone or tablet
• Your mobile operator
• Contact info provided by others on Facebook
• A number you entered previously but didn't confirm

Keep in mind that you can control who can see your number.

Source : Facebook.com