Vietnam eSIM with Real Phone Number – Vinaphone OTP, Grab

Vietnamese apps like Grab, MoMo (mobile wallet), and local bank apps require SMS OTP verification when you register, log in, or make payments. Without a local number, you cannot receive those codes. Hotels in Vietnam also commonly call the local number you provide at check-in — to confirm your room is ready, notify you of a change, or ask about late arrival. A data-only eSIM (for example, from Airalo or Holafly) does not give you a phone number, so OTP and callbacks simply do not work.

A Vinaphone eSIM from simvietnam.telebox.vn solves this by providing a real +84 number that is active for the full duration of your plan (10, 15, or 30 days). The number is tied to the eSIM profile and works as long as the plan is valid. You can use it for all SMS-based verifications and inbound calls — something no data-only travel eSIM can offer.

We offer three Vinaphone eSIM plans: 10 days at $11.90, 15 days at $13.90, and 30 days at $18.90. Each includes 5 GB of high-speed data per day with unlimited throttled data after the cap. Upon activation (usually within one minute of landing in Vietnam), you receive an SMS with your Vietnam phone number — e.g., 090xxxxxxx. Save this number in your phone and use it wherever a local number is required.

The Vinaphone number can receive SMS free of charge — ideal for OTP codes. However, sending SMS (outbound) is not supported on this plan. For voice calls, you can receive calls on the number without extra cost, but making outgoing calls may incur charges; we recommend using WhatsApp, Zalo, or Telegram over data for outgoing calls. The number is linked directly to the eSIM profile — no physical SIM is needed.

Step 1: Purchase the Vinaphone eSIM online — the QR code will be sent to your email immediately. Step 2: On your phone, go to Settings → Cellular (or Mobile Data) → Add Cellular Plan on iPhone; on Android, the path is similar under Settings → Connections → SIM card manager → Add eSIM. Scan the QR code to install the profile. Step 3: Enable data roaming for the new line. The eSIM activates automatically within one minute of you landing in Vietnam — no manual setup is needed.

Step 4: Once activated, check your SMS inbox. You will see a welcome message from Vinaphone containing your Vietnamese phone number. Write it down or save it in your contacts. Step 5: Use that number immediately for Grab registration, hotel booking confirmations, and any app that requires SMS verification. If the SMS with the number does not appear within five minutes, restart your phone. If it still does not show up, contact our support team for assistance.

Grab: When you register a Grab account, choose the option to verify by SMS. Enter your new Vietnam number (including the +84 prefix, e.g., +8490xxxxxxx). You will receive a 6-digit OTP within seconds. Enter the code and your account is ready. Hotels: provide your Vietnam number at check-in — staff will call if your room is ready, if there is an issue with your reservation, or if you need to be contacted during your stay.

Online banking apps like Timo or TPBank send OTP to the registered phone number — with a local number, international users can receive these codes without roaming charges. Delivery services such as Baemin and ShopFood also verify orders via SMS. Optionally, you can attach your Vietnam number to your WhatsApp or Telegram account for additional verification, though it is not required if you already have a working data connection.

SMS not arriving: ensure mobile data is turned on and that data roaming is enabled for the Vinaphone eSIM line. SMS works over the cellular network, not over Wi-Fi. If you are connected to Wi-Fi only, SMS may not be delivered. Number not registering in Grab: try entering the number with the +84 country code (e.g., +8490xxxxxxx). Some apps require the international format.

Can't receive calls: check your phone's dual SIM settings — some models require you to enable calls on the secondary line or turn off call forwarding. Outbound SMS is blocked: the Vinaphone eSIM is receive-only for SMS, so you cannot reply to texts directly. Use the OTP provider's forwarding option if needed. Data stops after 5GB per day: the plan resets at midnight Vietnam time (UTC+7). You will not be charged extra; speeds simply drop to a lower but usable rate.