Will WhatsApp work with an eSIM?

Yes, using WhatsApp with XOXO eSIM is no problem at all. The app operates over an internet connection and does not depend on having an active primary SIM card. A phone number is only required when you first register your account. After that, all you need is internet access—even if your physical SIM card is removed or disabled, you can continue using WhatsApp with your existing number.

Will iMessage work with an eSIM?

Yes, iMessage also works seamlessly on devices using XOXO eSIM. Since the service relies on an internet connection, you can send and receive messages from other iPhone users without needing additional roaming packages. A phone number is not required to use iMessage—messages can also be sent and received through the email address associated with your Apple ID, whether you're connected via Wi-Fi or mobile data.