Where to buy a tourist SIM card in Nha Trang and which carrier is best?

For a short stay of 1–15 days, SIM cards may be available at excursion-sales counters. For a longer stay, one recommendation is to register a SIM at a Viettel office with a passport; it also advises avoiding “orange” SIMs in favor of “blue” ones.

For a longer stay, consider a local SIM with a large data allowance: one reported plan cost 300,000 VND for a month and included 10 GB per day. For a short trip, an eSIM can be an alternative; a reported option was about RUB 1,187 for 10 days with a stated 100 GB per day.

The three main carriers to consider are Viettel, Mobifone, and Vinaphone. Viettel has the widest national coverage, Mobifone performs well in cities and tourist areas, and Vinaphone is the third most popular option.

A tourist SIM card can be purchased using a copy of your passport — this is standard practice in Vietnam. The seller will photograph your document during registration.

The easiest option is to buy a SIM card right at Cam Ranh Airport upon arrival — all major carriers have counters there, saving you the hassle of finding a store in the city.

In Nha Trang itself, carrier stores are spread throughout the city, especially on central streets. SIM cards are also sold at small phone shops and street vendors, but official stores are more reliable.

For navigation in Nha Trang and Vietnam, Google Maps works reliably with local SIM cards. Maps.me is also popular for offline map use.