You can sync your PrivateMail account calendar and contacts with your mobile device using the...How to Sync PrivateMail Contacts using CardDAV on Android
You can sync PrivateMail contacts on any Android device with the CardDAV sync app. To Sync your...How to create a new contact
How to create a Contact: To create a new contact click the New Contact button, enter the Name,...How to manually Sync Contacts with iOS
Go to Settings and open Passwords & Accounts Under Accounts select Add Account...