Upgrading iPhone/iPad to iOS 11
Before Updating to iOS 11
- Ensure all apps have been updated using App Store → Updates.
- Check which apps will stop working under Settings → General → About → Applications.
If you use a mailbox hosted on Exchange 2016 (on-premises), Office 365 or Outlook.com, the inbuilt Mail app will not connect properly. In this circumstance you can use Outlook for iOS or delay the installation of iOS 11. This issue has now been fixed in iOS 11.0.1.
After Updating to iOS 11
- If you updated to iOS 11.0, update to 11.0.1, which contains many security fixes.
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