Issue - Shared calendar not showing up iPhone (shows up in Outlook & OWA)

I refer to a Question thread titled: "Shared calendar not showing up iPhone (showing up in outlook & owa)",  which was posted last year.

I have the same problem. Basically, I have 2 users of Office 365. Person A and Person B can share calendars on Outlook and OWA, but not on their Iphones.

Has this problem been resolved?

This is a very important feature for us as we need to see each others calendar on our Iphones.

Thanks,

Chevy