Can you make regular phone calls with a Vietnamese SIM or eSIM in Nha Trang, or is it data-only?
Based on 1 discussion with 3 participants · Last activity: 2 days ago
TL;DR
Tourist SIM cards and eSIMs sold in Nha Trang are typically data-only — regular cellular calls don't work, you need to call via WhatsApp or another messenger using mobile data.
What the community said
The eSIM works purely as an internet source, similar to Wi-Fi; regular calls don't go through it, but you can call via WhatsApp using that data connection.
2 days ago WhatsApp over eSIM data
If calls aren't working, keep in mind the eSIM only provides internet access, like Wi-Fi or mobile data, not a full replacement for cellular voice calls.
2 days ago
Local SIM card sellers in Nha Trang openly warn that their SIMs are internet-only — you can't make regular cellular voice calls with them.
2 days ago data-only SIM