Vietnam eSIM with Phone Number: Can You Get One?

The vast majority of Vietnam eSIMs sold online — including every plan we offer — are data-only products. They provide internet access but do not include a local phone number, voice calling, or SMS reception. This is standard across nearly all travel eSIM providers worldwide; very few eSIMs for any country include a full phone number because of regulatory and technical hurdles.

If you specifically need a Vietnamese phone number — for receiving verification codes, making local calls, or being reachable by locals — you must purchase a physical SIM card from Viettel, Vinaphone, or Mobifone. These can be found at airport kiosks, carrier stores, or convenience shops. A data-only eSIM cannot receive SMS or make traditional calls, so it won't serve that purpose.

Data-only eSIMs work only for internet-based services. They cannot process USSD codes (like checking balance), receive SMS from banks, or place circuit-switched calls. If your travel plans rely solely on messaging apps and Google Maps, a data-only eSIM is sufficient. But if you expect to call restaurants or have your bank send an SMS, you'll need a different solution.

A data-only eSIM provides high-speed internet over 4G/5G networks — typically 5GB or more per day depending on the plan. This works seamlessly with apps like WhatsApp, Facebook, Google Maps, Grab, and streaming services. For most tourists focused on navigation, social media, and ride-hailing, this is enough.

What it cannot do: voice calls, SMS, or USSD code dialing. This means you cannot use it for phone-number-based verification — a common blocker for banking apps or two-factor authentication (2FA) that sends an SMS code. If your bank or social media app requires an SMS to confirm login, a data-only eSIM won't receive it. You'd need to rely on your home SIM (if roaming) or a physical Vietnamese SIM instead.

For app-based calls and messages (WhatsApp audio, Skype, FaceTime), the data connection works perfectly — but those use internet protocol, not the carrier's voice network. So you can talk to people back home using apps, but you cannot dial a local landline or receive calls on a Vietnamese number.

As of 2026, no major Vietnam eSIM provider — including our own — offers a local phone number bundled with an eSIM. A few niche providers claim to offer voice-enabled eSIMs, but they almost always require in-person KYC (know your customer) verification at a store, which defeats the purpose of instant eSIM activation. We tested two such services; both required a visit to a physical counter in Hanoi or Ho Chi Minh City.

The only reliable way to get a Vietnamese phone number remains a physical SIM card from Viettel, Vinaphone, or Mobifone. These are sold at Noi Bai (Hanoi), Tan Son Nhat (Ho Chi Minh City), and Da Nang airports, as well as at carrier stores throughout cities. You'll need to present your passport for registration. The SIM itself costs about 50,000–100,000 VND ($2–$4 USD), plus a prepaid plan that usually includes data, local calls, and SMS. These physical SIMs are genuine phone numbers — they can receive SMS and make voice calls.

If you absolutely must have a local number, plan to pick up a physical SIM upon arrival. Most airport shops are open 24/7 and the process takes less than 10 minutes. Keep in mind that you'll need a phone that accepts a physical nano-SIM — if your phone is eSIM-only (like some US iPhone models), you're out of luck for a local number until more eSIM voice options emerge.

If you have a dual-SIM phone (most modern Android and iPhone models), you can combine a data-only eSIM for internet with a physical Vietnamese SIM for local calls and SMS. Alternatively, you could keep your home SIM active in one slot for receiving calls/SMS from your home country, and use a Vietnam eSIM for data. The key limitation: most phones support one physical SIM + one eSIM simultaneously. If you also want to have two eSIMs active, check your phone's specifications — some newer models allow dual eSIMs, but it's rare.

For example, insert a Vietnamese physical SIM in slot 1 and install a data-only eSIM (like our Viettel 7-day plan) on the eSIM slot. Set the eSIM as the default data line, and keep the physical SIM for voice and SMS. You can then make and receive calls on the local Vietnamese number while using the eSIM's high-speed internet for apps. However, note that if you only have an eSIM-only phone, you cannot use a physical Vietnam SIM at all — you'd need to rely entirely on data eSIMs.

If your priority is staying reachable on your home number (e.g., for work or 2FA from bank), use your home SIM in slot 1 and a Vietnam data eSIM in slot 2. Many travelers do this: they keep their home number active (often with a roaming pass), and use the Vietnam eSIM for local data. This avoids the need for a Vietnamese phone number entirely.

If your only need is to make voice calls or send texts — and you don't require a Vietnamese number — app-based calling works perfectly over a data-only eSIM. WhatsApp, Skype, Google Voice, and FaceTime all support voice calls over internet. As long as the other person also has the app, you can communicate without a local phone number.

Many travelers use a data-only eSIM for internet and keep their home SIM active for calls/SMS from their home number. This is a practical combo: you get fast local data for maps and ride-hailing, while your home number stays online (possibly with an international roaming add-on) for calls to family and receiving SMS from your bank.

If you need to call local Vietnamese landlines or mobile numbers (e.g., to confirm a hotel booking or call a restaurant), you can use Skype Credit or Google Voice to dial out over the internet. This avoids paying per-minute roaming rates. However, you won't have a local number for people to call you back on — you'd have to use your home number or arrange callback via messaging.