@TeamYouTube Dear Youtube Staff! Is there the way you can check analytics and everything else on mobile devices? BTW, “JOIN “ button is not available on iPhone
and iPad. I hope
this feature will be available ASAP. Thanks 
You can check out our Creator studio app, however, not all the analytics specifications can be looked upon in it. Also, you can always share your thoughts by sending a feedback report: https://goo.gl/WdI0BK . It helps us prioritize your request.