GigSky does not provide eSIM plans that include a phone number or SMS capability for Vietnam. The provider offers only data‑only eSIMs for that destination.
Travelers who need voice or text communication can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. However, some destinations may block or restrict access to certain apps or services, so it is advisable to confirm that the VoIP apps you rely on work in Vietnam before purchasing a GigSky eSIM.