Yes, without any problem. WhatsApp chats, calls, and video calls all run over data, so they work normally on Coral eSIM — as do Instagram, X, Google Maps, and other apps.
Things to note:
- SMS verification codes needed to register or move a WhatsApp account cannot be received on Coral eSIM (it's data-only). Keep your home SIM active via dual SIM to receive them (details here)
- It's safest to be already signed in to your apps before you travel
For phone number details, see "Does Coral eSIM come with a phone number?"