Does a home country SIM card work in Vietnam for receiving SMS and calls?
Based on 1 discussions with 3 participants · Last activity: 3 days ago
TL;DR
Your home SIM card will work in Vietnam for receiving calls and SMS, but mobile data should be disabled. Answering incoming calls is expensive — better to decline and call back via messengers.
What the community said
A home SIM card works in Vietnam via roaming for calls and SMS. It's best to disable mobile data to avoid charges — use a local or eSIM for internet access instead.
1 day ago Roaming: SMS receive only, disable mobile data
Answering incoming calls on your home SIM in Vietnam is costly due to roaming rates. The practical workaround is to decline the call and call back via WhatsApp, Telegram, or another messenger over Wi-Fi or a local data SIM.
1 day ago Incoming roaming calls are expensive — use messengers instead
For mobile data in Vietnam, an eSIM is the most convenient option — purchase it online before departure and activate it upon arrival without swapping your physical SIM.
2 days ago eSIM for internet in Vietnam