Vietnam SIM Cards for Travelers: 2026 Registration Rules, Prices, and eSIM Options

Passport registration for every physical SIM in Vietnam has been mandatory since 2021, and that rule still applies in 2026. At Viettel, Vinaphone, and Mobifone counters — including the ones at Noi Bai, Tan Son Nhat, and Da Nang airports — staff will scan your passport or e-visa and submit the activation before handing over the SIM. It takes less than five minutes, but you cannot skip it; unregistered SIMs bought from street vendors are routinely deactivated within days.

International data-only eSIMs from Airalo and Holafly are the one exception to this paperwork. You buy online, scan a QR code, and connect without showing any ID. A 5GB/30-day Airalo Vietnam eSIM starts around $6, and Holafly offers unlimited-data plans from about $19 for 5 days. The trade-off is that these eSIMs do not include a Vietnamese phone number, so you cannot receive calls or SMS for ride-hailing or restaurant bookings that require local verification.

If you need a real local number, a local eSIM from Viettel or Vinaphone works like a physical SIM: the store still scans your passport or e-visa before activation. For 2026, check directly with the operator or a city store whether any new biometric requirements or registration fees have been added; as of early 2026 there is no official fee beyond the SIM package price, but rules can change with little notice.

Official Viettel, Vinaphone, and Mobifone counters at Noi Bai, Tan Son Nhat, and Da Nang airports sell tourist SIMs on arrival; a 30GB/30-day Viettel package typically costs 200,000–250,000 VND (about $8–10) in 2026. Airport counters scan your passport or e-visa and hand you a working SIM in minutes, but prices run higher than city stores. If you can wait until you reach town, the same operators sell identical packages without the airport surcharge at official Viettel, Vinaphone, or Mobifone stores in city centers. Avoid street vendors near the airport and tourist areas: unregistered SIMs may be deactivated days after purchase. Every physical SIM in Vietnam requires passport registration, and store staff will scan your passport or e-visa, submit the activation online, and insert the SIM to confirm calls and data before you leave. For a stay longer than two weeks, buying at a city store saves real money; if you need data right after landing, the airport counter is the simplest official option.

Data-only international eSIMs from Airalo and Holafly start at $6 for 5GB/30 days and top out around $20 for 30GB/30 days. You buy before flying, scan a QR code, and the eSIM activates instantly with no passport registration, no airport counter, and no paperwork. For trips under 30 days, this is the least hassle option if you mainly need mobile data.

What you give up is a Vietnamese phone number. Ride-hailing apps like Grab sometimes require SMS verification on first login, hotels occasionally call local numbers, and some local apps or promotions ask for a Vietnamese number to sign up. If you don't need those, an international eSIM is the simplest choice.

For a real Vietnamese number, choose a local eSIM from Viettel or Vinaphone. It works like a physical SIM, but you must register with your passport at an official store or counter before activation. Before buying any eSIM, check compatibility: US iPhone 14 and 15 variants lack physical SIM slots but support eSIM, while some dual-SIM Android models may not. Airalo lists compatible devices; confirm your phone model on the provider's site.

Viettel is the network to buy if your Vietnam route goes beyond Hanoi, Ho Chi Minh City, and Da Nang. Its 4G footprint in rural, mountainous, and remote areas is measurably stronger than Vinaphone's or Mobifone's—expect signal on mountain passes, in national parks, and along border roads where the other two drop to 3G or nothing. Vinaphone is the most reliable city pick: in Hanoi, Ho Chi Minh City, and Da Nang, data speeds stay steady even in dense neighborhoods, and call quality is consistently clear. Mobifone is the budget option, with data packages frequently priced below the other two for the same allowance, but its rural reach is noticeably behind Viettel's, so it only makes sense if you're staying in provincial capitals or major towns.

All three operators have 5G in central Hanoi, Ho Chi Minh City, and Da Nang, but coverage is patchy outside commercial cores and essentially absent in rural areas. Before you pay and leave the store, run a speed test on the actual phone you'll be using and make a test call—activation errors are common, and indoor coverage can differ sharply from your hotel or homestay. Speeds also vary by phone model and time of day, so don't judge a SIM by one impressive number in the shop.

A Viettel tourist SIM at Noi Bai or Tan Son Nhat airport costs 200,000–250,000 VND (about $8–10) for 30GB of 4G/5G data valid 30 days. If you need more data, the 60GB/30-day package runs 300,000–350,000 VND (about $12–14) at the same counters. Official Viettel, Vinaphone, and Mobifone counters at Noi Bai, Tan Son Nhat, and Da Nang sell these packages; the prices above are for Viettel, which is the most common at airports.

For travelers who only need data, international eSIMs undercut physical SIMs. Airalo's Vietnam package starts at $6 for 5GB/30 days; Holafly sells a 30GB/30-day version for $20. These activate instantly after you scan a QR code and require no passport registration, but they do not come with a Vietnamese phone number, so you cannot make local calls or receive SMS from banks or ride-hailing apps that require a local number.

If you need a Vietnamese number, a local eSIM from Viettel or Vinaphone will cost about the same as a physical SIM package—expect 200,000–350,000 VND depending on data—but you must still register with your passport at an official store or online via the operator's app. Payment at physical stores should be in VND; USD is not standard and airport exchange counters or staff may give you a poor rate if they accept dollars at all. Use a credit card or VND cash.

At official Viettel, Vinaphone, and Mobifone counters in Noi Bai, Tan Son Nhat, and Da Nang, handing over your passport or e-visa, choosing a package, and having staff scan the document and submit activation takes about five minutes. In 2026, tourist SIMs at these counters run 200,000–250,000 VND for a 30GB/30-day package; staff install the physical SIM or eSIM profile on the spot.

Test data, calls, and SMS before you leave. Open a map or webpage, make a short call, and send a text to confirm the number works. If anything fails—no signal, data not provisioning, wrong number—the counter staff can fix it immediately, usually by resubmitting registration or swapping the SIM. After you leave the airport, solving an activation error means a return trip or a Vietnamese-language support call.

For trips under 30 days, an international eSIM from Airalo or Holafly is easiest: no passport scan, instant install, data-only, from about $6 for 5GB. For longer stays, buy a physical SIM at a city store—Viettel or Vinaphone shops in Hanoi's Old Quarter or HCMC's District 1—to avoid airport surcharges and get a local number. Check operator websites for current 2026 packages, 5G band compatibility with your phone, and any biometric registration updates.