iphone calendar not syncing to office 365
I've just moved to an iphone 11 from android. I have a corporate Office 365 account, which I've configured on the iPhone. I used Outlook for IOS first, but am using the native mail and calendar apps now. The problem exists with either app. EMail syncs correctly both directions. Office 365 calendar appointments which I put into Outlook on my desktop appear fine on the iPhone, but appointments created on my iPhone never sync back to Office 365.