For Google Contacts backup go to spinbackup.com and create your Spinbackup account.
For signing up, check our How to sign up for Spinbackup account for Business article. Automatic backup of your Google Contacts will start the day after you sign up.
If you want to start the backup of your Google Contacts manually, follow these steps:
1. Tap the Log in as G Suite / Google Apps Administrator button in the upper right corner.
2. Insert your e-mail and password or sign in with Google.
3. At your dashboard on the left, click Users.
4. You will see a list of all your domain users subscribed to Spinbackup. Choose the name of a user whose Google Contacts must be backed up, unfold it by clicking +/- button, and click the Google Contacts button under the user’s name.
5. In a new window, press Backup.
6. When the backup process is complete, you can see all your Google Contacts backed up to your Spinbackup account.
To learn more about how to back up your Google Contacts, watch this video