Bordersim does not provide a Vietnam eSIM that includes a phone number or SMS capability. Their offerings for Vietnam are limited to data-only plans, so travelers will not receive an active phone number or the ability to send or receive standard text messages.
To communicate while abroad, you can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. Travelers should verify that these services are accessible in Vietnam before purchasing, as some destinations may block or restrict particular apps or VoIP services.