After creating a backup file of your contacts, you can import the contacts from this file at any time.
For importing a backup file of your contacts follow the steps below:
- Open the email containing the backup file.
- Scroll down to the attachment and tap the attachment to download it.
- Press "Open in Contacts".
- After downloading complete, you'll see the list of contacts in this file. Press "Add All Contacts".
- Choose if you would like to add these contacts as new contacts or merge them with your existing contacts.