How to sync contacts with Apple iPhone (iOS)? – sync.blue® help

Solution 1: via CardDAV

Setup

On the iPhone:

Open Settings -> Contacts -> Accounts -> Add Account -> Add CardDAV account
Enter:
- Server: directory.sync.blue
- Username: API_KEY (replace with your own API Key, which is displayed when setting up a sync.blue® connection)
- Password: API_KEY (as in Username)
- Description: sync.blue
- Advanced Settings
  - Use SSL: yes
  - Port: 443
  - Account URL: https://directory.sync.blue/API_KEY

Distribution of CardDAV credentials with Microsoft Intune

Instead of manually entering the CardDAV access data provided by sync.blue® into each end device, it can be distributed fully automatically to any number of end devices with Microsoft Intune. Further information can be found in the corresponding help article: How do I distribute CardDAV access credentials using Microsoft Intune?

Hints

The synchronized contacts are located on the iPhone under Phone -> Contacts -> Lists -> sync.blue.
Prompt the iPhone to synchronize the address book immediately by creating or deleting a temporary contact on the iPhone in the CardDAV address book.
Get iPhone to sync address book immediately by create a temporary contact on the iPhone in the CardDAV address book or deletes.
Make sure that the iPhone is sufficiently charged, otherwise it will be in power saving mode no contacts are synchronized.
You can test how with this command line command (example for macOS). You can quickly download the CardDAV address book from your network:
```
curl -u "API_KEY:API_KEY" https://directory.sync.blue/ API_KEY /addressbook > ~/Desktop/API_KEY.addressbook
```

Solution 2: via Apple iCloud

Use the "Apple iCloud" application to synchronize contacts with the iPhone. The prerequisite is that iCloud contacts have been activated on the iPhone.

Solution 3: via Microsoft 365 / Windows Live

After adding the account, the contacts are natively synchronized with the smartphone including subfolders.