SIM & Internet

Can you buy a local SIM card on arrival at Ho Chi Minh City airport, and should you pay in cash or by QR/card?

Yes, you can usually buy a local SIM card on arrival at Tan Son Nhat Airport (SGN), especially in the international arrivals area. Cash in VND is the safest option, because QR payments in Vietnam often require a local banking app and may not work for international travelers.

2 sources · 15 days ago

Why is a Viettel SIM in Ho Chi Minh City blocking SMS or calls, or asking for document verification, and what should you check?

With Viettel, mobile data can keep working while outgoing calls and SMS are limited if your passport registration was not fully updated. Another common issue is that a package may be sold as including calls and texts, but SMS still require separate credit, so ask for the exact plan name and receipt.

2 sources · 16 days ago