Can you make phone calls with an eSIM in Nha Trang, Vietnam — does Wi-Fi calling (VoWiFi) work?
Based on 2 discussions with 3 participants · Last activity: 2 days ago
TL;DR
A travel eSIM in Nha Trang provides data only, not a real phone number for calls — you make calls via WhatsApp/Telegram using that data connection. Home-carrier Wi-Fi calling (VoWiFi) typically does not work abroad in Vietnam.
What the community said
A local eSIM in Nha Trang only provides mobile data — there's no built-in phone number for regular calls. You make calls via WhatsApp or Telegram using that data connection instead.
2 days ago eSIM = data only
Wi-Fi calling (VoWiFi) from a home carrier such as Tele2 typically does not work in Vietnam — the feature relies on IMS roaming with the home network, not just any Wi-Fi connection.
2 days ago Home-carrier VoWiFi usually doesn't work
Regular internet-based apps and services generally work fine over an eSIM data connection in Vietnam, since they depend on internet access rather than a specific home carrier's network.
2 days ago