EZsim does not provide a Phone Number or SMS capability for travelers in Vietnam. All eSIM plans sold by EZsim for Vietnam are data‑only, meaning they do not include inbound or outbound voice or text services.
Travelers who need to make calls or send messages can use popular VoIP applications such as WhatsApp, Telegram or iMessage over the data connection that the eSIM supplies. However, some destinations may block or restrict access to certain VoIP services, so it is advisable to confirm that the apps you rely on are available in Vietnam before purchasing a plan.