Feb 19, 2016, 8:14:44 AM via Website
Feb 19, 2016 8:14:44 AM via Website
Your contacts are actively recognized from the address book on your phone. The application will automatically detect WhatsApp contacts and add them to your WhatsApp Contacts list.If you want to restore lost contacts, it is only possible for you to restore them if you have previously made a copy using your phone's features. Unfortunately, if you are unable to restore your contacts, WhatsApp cannot restore your contacts for you.
— modified on Feb 19, 2016, 8:18:43 AM
Mar 18, 2019, 3:49:58 AM via Website
Mar 18, 2019 3:49:58 AM via Website
You can't restore old contacts on WhatsApp
If you have synced the contacts with Google account,you can restore them on computer.