How to connect an external calendar（iCloud、Google、Outlook）
If the external calendar you want to display, such as Google Calendar or Outlook, is not in minical, please check the Settings
app settings.
- Open the Settings app
- (For iOS 18 or later) Tap "Apps"
- Tap "Calendar"
- Tap "Accounts" (Calendar Accounts)
- Tap "Add Account" and follow the instructions to add an external calendar account.
*If you have already added an account, make sure Calendar is enabled in the account settings
Reference
Change your Calendar settings on iPhone
In the Calendar on iPhone, add multiple accounts such as iCloud, Google, Microsoft Exchange, and Yahoo. Change default settings and display your calendar in a way that works best for you.
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