[Where to download Outlook for the Apple iPhone (iOS)?] Microsoft Outlook for Apple iPhone (iOS) https://products.office.com/en-us/outlook-mobile-for-android-and-ios or Microsoft Outlook for Apple iPhone (iOS) https://itunes.apple.com/us/app/microsoft-outlook/id951937596 [How to setup Office365 or Exchange Server and/or Hybrid?] A new architecture for Exchange hybrid customers enables Outlook mobile and security https://blogs.technet.microsoft.com/exchange/2018/04/02/a-new-architecture-for-exchange-hybrid-customers-enables-outlook-mobile-and-security/ Outlook app configuration – contact field export control https://blogs.technet.microsoft.com/cbernier/2018/11/01/outlook-app-configuration-contact-field-export-control