To add a contact through WhatsApp:

1. Press New chat > Options > Add new contact.
   • On JioPhone or JioPhone 2, you'll need to select if you want to save the contact to Phone memory or SIM memory.
2. Enter the contact's name and phone number > press SAVE.
3. The contact should automatically populate in your contact list. If the contact doesn't appear, press New chat > Options > Reload contacts.

To add a contact through your phone's address book:

1. Press Contacts on the apps menu.
2. Press New contact or New.
   • On JioPhone or JioPhone 2, you'll need to select if you want to save the contact to Phone memory or SIM memory.
3. Enter the contact's name and phone number > press SAVE.
4. The contact should automatically populate in your WhatsApp contact list. If the contact doesn't appear, open WhatsApp, then press New chat > Options > Reload contacts.

Note: You can delete a contact from your phone's address book, but you can't delete a contact from WhatsApp.