What "các gói cước Viettel" actually means
The phrase translates literally as "Viettel packages" or "Viettel plans". It refers to the prepaid tariff catalogue that Viettel — Vietnam's largest mobile network operator, state-owned and with the widest rural coverage — sells to its domestic subscribers. Plans carry codes like V90B, are billed in Vietnamese dong, and are marketed in Vietnamese.
If you are a Vietnamese reader comparing plans, the codes matter and the catalogue is the right place to compare them. If you are a traveller searching the same phrase, the answer is different: these plans are not designed for you, and there is a simpler route to being online in Vietnam.
Why travellers can't just buy a Viettel plan
Viettel prepaid SIMs are sold to Vietnamese residents and to visitors, but the registration process is the friction point. Since 2016, Vietnamese law has required all SIM cards to be registered against a verified identity. In practice that means:
- A Vietnamese citizen registers with a national ID card.
- A foreign visitor registers with a passport, usually in person at an official Viettel store, not a market stall.
- SIMs bought informally from street sellers are frequently pre-registered to someone else, which is why they get cut off after a few days.
Beyond registration, the plan codes themselves are Vietnamese-language products. V90B and similar packages bundle domestic data, domestic calls and sometimes SMS in combinations that make sense for a resident, not for someone in the country for ten days.
Viettel vs VinaPhone vs MobiFone at a glance
Vietnam has three main networks. Coverage and speed claims should always be checked against the plan you actually buy, but the general positioning is well established.
| Network | General reputation | Typical traveller relevance |
|---|---|---|
| Viettel | Largest coverage footprint, strongest in rural and mountainous areas | Best if you plan to ride the Ha Giang loop, trek in Sapa or visit remote areas |
| VinaPhone | Strong urban and coastal coverage, good 4G in cities | Fine for Hanoi, Da Nang, Hoi An, Ho Chi Minh City |
| MobiFone | Solid in cities, historically weaker in remote provinces | Adequate for a city-focused trip |
For a fuller comparison of the three, see our guide to Viettel, VinaPhone and MobiFone.
The traveller's alternative: a Vietnam eSIM
A Vietnam eSIM sidesteps the registration problem entirely. You buy it before you fly, install it on a compatible phone, and it connects when you land. There is no shop visit, no passport photocopy, no Vietnamese-language plan code to decipher.
VietSIM's Vietnam eSIM runs on the major Vietnamese networks and is sold in data packages sized for trips — a few days, a couple of weeks, or longer. You can check whether your phone supports eSIM on our phone compatibility page, and if you use Android specifically, our Vietnam eSIM for Android guide walks through setup.
If you are weighing an eSIM against a physical SIM bought at the airport, our Tan Son Nhat airport SIM guide and Noi Bai airport SIM guide cover what is actually on sale at the two main international arrivals halls.
What to buy, and where
The honest answer for most travellers: buy the Vietnam eSIM before you leave home. It is one click, it activates on landing, and it avoids the registration queue.
Buy the Vietnam eSIM — choose your data size and validity, install it while you still have home Wi-Fi, and land connected.
If you are still deciding between an eSIM and pocket Wi-Fi, our comparison of the two sets out the trade-offs. And if you want to understand what "unlimited" actually means on a Vietnamese data plan, see our guide to unlimited Vietnam eSIMs.
A quick checklist before you buy
- Confirm your phone is eSIM-capable and carrier-unlocked.
- Decide your data size: light use (maps, messaging) versus heavy (video, hotspot).
- Check whether you need a local phone number — most eSIM data plans do not include one. See our explainer on eSIM phone numbers if this matters.
- Install the eSIM before departure, but activate it on arrival.
- Keep your home SIM active for banking and two-factor codes.
If you are a Vietnamese reader comparing plans
This page is written for travellers. If you are a Vietnamese subscriber comparing Viettel, VinaPhone or MobiFone prepaid plans, the plan codes and bundles are listed in the catalogue, quoted exactly as they are sold. VietSIM does not sell or top up those plans — the catalogue is informational, and where a plan page is linked, it is an affiliate link.