Laravel Socialite Sign in with google method

Question

I am developer for wifi sign in with Google using Laravel application , in this application we are using Laravel Socialite , we have same coding wrote here :

http://itsolutionstuff.com/post/laravel-5-google-oauth-authentication-using-socialite-packageexample.html

our customer can't login using mobile or phone , but everything working smoothly on desktop browser like chrome

we always get this warning message on phones

I also need to mention that on wifi connection its auto pop up mobile phone web-view landing page ,