How to buy and activate a SIM card or eSIM in Nha Trang, Vietnam?

From messages by 3 participants in 1 source · Last activity: 19 days ago

TL;DR

The easiest option is to buy an eSIM in advance through an app (Airalo, Saily) and activate it before your flight, or get a physical Viettel/Mobifone SIM at Cam Ranh airport or a phone shop in the city for about 150,000–250,000 VND with a monthly data package.

What the community said

An eSIM can be purchased through Trip.com: a 3-day package cost 65 RUB. It can be installed before departure; after arriving in Vietnam, enable data roaming for the eSIM in the phone settings for service to start working.

19 days ago Trip.com — 3 days for 65 RUB

After landing, connect to the airport Wi-Fi and then buy a local Viettel SIM card.

19 days ago Viettel

Before flying to Nha Trang, many travelers ask how to properly set up an eSIM — it's recommended to buy and activate it in advance through a dedicated app so internet works right after landing.

If buying a physical SIM after arriving in Nha Trang, you first activate it with the vendor (passport is usually required), and then the question is how to keep using Telegram if your account is tied to a different number — usually it's enough to just keep your old SIM as a backup for receiving login codes, without changing the number in Telegram.

When planning a trip to Nha Trang for mid-month (around the 10th-12th), travelers often sort out SIM/eSIM details in advance so they don't have to deal with it after arrival.