What app can protect the address book?

Here are some applications that can protect the address book:

1, Truecaller:Truecaller is a powerful phone number identification and blocking application that can protect your address book.

2.Keeper:Keeper is a password management application that can protect your address book and other sensitive information.

3.Vault:Vault is an application to protect your privacy, which can protect your address book, SMS, photos and videos.

4.ContactLocker:ContactLocker is an application specially designed to protect your address book. You can set a password or fingerprint identification to protect your address book.

5.Private Zone: Private Zone is a comprehensive privacy protection application, which can protect your address book, SMS, photos, videos and applications.