If you’d like to keep the important contacts from your Google account in one place, for example, your iPhone or iPad, you can easily do so by transferring your address book from Gmail mailbox to your iOS device. Read on to discover how to sync your Google contacts with your iPhone or iPad.
To sync your Gmail and iPhone/iPad and transfer the contacts, simply go to your iOS Settings app and tap Passwords & Accounts> Add Account > Google.
Next, enter your Google email address and password, then tap Next. Switch on the option Contacts to synchronize your address book and click Save to apply changes.