Your contact book is your gateway to all the phone conversations in your personal and professional life. Here’s how you can manage your contact book, customize the Contacts app, and delete contacts on your iPhone and iPad.
Set Up Contacts Account
The first thing you’ll want to do is set up an account to which you can sync and save your contacts. Open the “Settings” app on your iPhone or iPad and go to “Password & Accounts.”
Here, tap on “Add Account.”
Choose from one of the services where you already have your contact book. This can be iCloud, Google, Microsoft Exchange, Yahoo, Outlook, AOL, or a personal server.
From the next screen, enter your username and password to sign in to the service.
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Source: How-To Geek
