I want a user mobile number before WordPress Social Login

Hi,

I am using the WordPress Social Login plugin to allow user to login on my site with Facebook and Google+. I want user mobile number and then save number to session and when user successfully login with Facebook or Google+ want to save that number with user’s details in database. I have searched a lot but not found any solution is their any solution for this or i have to leave this plugin and do it with custom coding ?

Please help
Thanks in Advance