Funny you mention iOS - my MegaCorp-issued iPhone has Microsoft entune for device management and Active Directory membership, Microsoft Authenticator for single sign-on, and really high quality versions of Microsoft office apps - Teams, Outlook, Word, Excel. Microsoft is all-in when comes to iOS.

Over Peak I had to update a shared Excel file on SharePoint each night - because as we all know, Excel is the finest multi-user database in existence. I had no problems doing that from my iPhone.