Anybody else having a problem with @YouTube not updating stream or premiere viewers on mobile devices (iPhone)? It’s been happening for over a month now and I’ve tried everything to fix it. @TeamYouTube help please 
That's not currently available, but thanks for letting us know that it's something you'd like to see. Mind passing this along via the Send Feedback tool: https://yt.be/help/feedback ? That's how we collect and prioritize requests!