after Ventura OS install on M1 Macbook Pro, iphone 13pro Max does not sync Calendar or Contacts

Hello bdtunes,

We would suggest restarting both the MacBook and the iPhone. While simple, this can refresh the operating systems, apps and connections.

If the issue continues after restarting, we would go ahead and confirm that the settings are correct to sync the data.

To find these settings on the Mac:

1. Choose Apple menu  > System Settings
2. Click Internet Accounts
3. Click on account with calendar and contacts you want to sync
4. Confirm settings are correct

If Calendar and Contacts user the correct accounts are toggled on, then toggle them off, wait a minute or two, and then toggle them back on. This can reset the connection.

Of the iPhone, tap Settings > Contacts > Accounts. Tap on each account you want to sync and check the settings.

Have a good day.