Windows Phone 7.8/8.0 using Two-Step Verification to login LinkedIn

LinkedIn WP mobile applications will send you a verification code after your first attempt to sign in the first time after enabling two-step verification.
   
    1. Check your SMS on your mobile device after your first attempt to sign in, to get the verification code.
    2. Then enter your password followed by the verification code (with no space in between) in the password field of the sign in page in order to sign into the application. (e.g. your password is 1234 and the SMS code is 8765, then you need to enter 12348765 to your password field of the apps)

Reference:
https://help.linkedin.com/app/answers/detail/a_id/559

Windows Phone 7.8/8.0 using Two-Step Verification to login LinkedIn