What SD70 actually is
SD70 appears in Vietnam's mobile market as a carrier plan code — the kind of short alphanumeric label Vietnamese networks use to sell a specific bundle of data, minutes or both to their domestic subscribers. Codes like this sit on carrier price lists and in the informational plan catalogue on this site; they are quoted exactly as they are sold.
What SD70 is not: a travel eSIM, a product you order from an eSIM store, or something a visitor needs to arrange before flying. If you found the term on a Vietnamese carrier page or in a forum thread, it belongs to the domestic subscription world, not the prepaid-travel world.
Why travellers keep meeting carrier plan codes
Vietnam's three networks — Viettel, VinaPhone and MobiFone — sell hundreds of coded bundles to Vietnamese subscribers. Each code maps to a specific combination of data, validity and sometimes call minutes. If you search for one of these codes in English, you will land on carrier pages written for Vietnamese residents, with prices in dong and terms that assume a Vietnamese ID or a long-term SIM.
That is the moment to step back. A visitor staying one to four weeks does not need a coded domestic bundle. You need data that works the moment you land, on the phone already in your hand. That is exactly what a travel eSIM is for.
For a wider view of how the three networks differ, see Viettel, VinaPhone or MobiFone: how Vietnam's three networks compare.
Travel eSIM vs carrier plan code: the decision
| Travel eSIM (VietSIM) | Carrier plan code (e.g. SD70) | |
|---|---|---|
| Who it is for | Visitors, 1–30 days | Vietnamese subscribers |
| Where you buy it | Online, before you fly | Carrier shop, app or dealer |
| ID needed | No | Often yes |
| Activation | Scan a QR code, activate on landing | In-store or carrier app |
| Payment | USD, card | VND, local methods |
| Physical SIM swap | No — eSIM stays in your phone | Yes, or a second SIM slot |
| Best for | A trip with a fixed end date | Living or working in Vietnam |
If your trip has an end date and a return flight, the left column is the one that matters.
What to buy instead
The store sells Vietnam eSIM plans by data allowance and validity — the two numbers that actually affect your trip. Choose by:
- Trip length — a 5-day plan for a short stop, a 15- or 30-day plan for a longer route.
- Data appetite — maps, messaging and booking apps are light; video calls, cloud photo backup and hotspot tethering are heavy.
- Hotspot use — if you plan to share data with a laptop or a travel companion, check the plan's tethering terms first. Vietnam eSIM as a Hotspot explains what tethering does to your allowance.
Buy the plan here: Vietnam eSIM store. Installation is a QR scan; activation happens when you land. If anything goes wrong at the airport, the Vietnam eSIM Activation guide walks through the fix step by step.
Check your phone before you buy
An eSIM only works if your handset supports it and is carrier-unlocked. Most recent iPhones and most flagship Android phones do; some budget models do not. Check the compatibility page in the help centre before checkout — it takes two minutes and saves a wasted purchase.
- iPhone users: Vietnam eSIM for iPhone
- Android users: Vietnam eSIM for Android
If you have already landed without data
You do not need a carrier plan code to get online today. Airport counters and city phone shops sell tourist SIMs, but queues, opening hours and passport checks vary by airport. If you would rather not deal with that after a long flight, buying the eSIM before departure is the simpler route — it is already installed and waiting.
For airport-specific detail, the relevant guides cover Tan Son Nhat and Noi Bai.
The short version
SD70 is a domestic carrier plan code. It is not what a visitor to Vietnam needs. What you need is a travel eSIM with enough data for your trip length, installed before you fly and activated on landing. That is one click away in the store.