To help secure your account if we detect suspicious activity – If you add your phone number to enable two-factor authentication, we'll send a authentication code to your phone if we detect an unusual sign-in attempt.

To prevent abuse – If we suspect potential abuse, we can ask you to provide your phone number as an additional authentication method to prove you're a real person. Learn more about security authentication.

To help you reset your password – When you add a mobile phone number to your account , we'll automatically enable it for this purpose.

To help others find you – If someone uploads their address book and your phone number is included, we may suggest them as a connection. Other permitted services may also look up your profile using your email address or phone number. You can always decide how you want your phone number used.

To verify your identity – In limited instances, we may use your phone number to support your request to verify your LinkedIn profile.