Question 1

Will my Vietnam eSIM work if I travel from Hanoi to Sapa by train?

Accepted Answer

Yes, your Vietnam eSIM is designed for mobility. Coverage remains strong along the main railway corridors and in Sapa. By using networks like Viettel, which is known for its superior reach in the mountainous northern regions, you can maintain a steady data connection for navigation and social media even as you move between altitudes.

Question 2

How do I get more data on my eSIM card Vietnam if I run out while in Ho Chi Minh City?

Accepted Answer

If you are on a fixed-data Vietnam travel eSIM plan, you can simply purchase a top-up via the SimCorner App to get back online instantly. If you are using our Vietnam Unlimited Data eSIM plan, you actually never run out. Even if you exceed your 3GB daily high-speed limit, your data continues at a reduced speed (128kbps) until it automatically resets at full speed every 24 hours.

Question 3

Can I use my Vietnam eSIM to book rides on the Grab app?

Accepted Answer

Absolutely, you can use the Vietnam eSIM to book rides on the Grab app. The Vietnam eSIM provides the high-speed data required for real-time GPS tracking and instant messaging within the Grab app. Having a reliable eSIM connection is the most efficient way to secure safe and affordable transport throughout the country, whether you land at Tan Son Nhat Airport or explore the streets of Da Nang.

Question 4

Is the Vietnam Unlimited Data eSIM plan truly unlimited for my trip?

Accepted Answer

The plan provides unlimited data for the duration of your trip, but it comes with a Fair Usage Policy (FUP). It includes 3GB of high-speed 5G/4G data every 24 hours. If you exceed this daily limit, your speed gets reduced to 128kbps for the remainder of the cycle—enough for WhatsApp and navigation—and automatically resets to full speed every 24 hours from your activation time.

Question 5

Will I have coverage while visiting the beaches in Phu Quoc?

Accepted Answer

Yes, the networks provided in our plans, such as Viettel, VinaPhone, and MobiFone, offer excellent coverage across Phu Quoc Island. Your Vietnam eSIM will easily let you share photos from the beach, verify flight statuses, and use translation apps at local seafood markets without needing to hunt for often-unreliable public Wi-Fi hotspots.

Question 6

Can I use this Vietnam eSIM without submitting my passport or biometric data?

Accepted Answer

Vietnam’s Decree 49 mandates that all local SIM users provide passport details and facial biometrics at a physical store. SimCorner’s pre-registered Vietnam travel eSIM allows you to bypass these strict requirements, so you won't need to share sensitive documents or wait in airport queues. You can simply activate your plan online and connect to Viettel or Vinaphone the moment you land.

Question 7

Can I use the hotspot feature to share the eSIM Vietnam data with my partner?

Accepted Answer

Yes, our Vietnam eSIM unlimited and extended (20–100GB) plans support personal hotspots. You can easily share your data allowance with other devices, such as a laptop or another smartphone. This is particularly useful for families or couples travelling together through Vietnam who want to stay connected using a single primary data plan. Please note that our 1–50GB plan does not include any hotspot allowance.

Question 8

What happens if I land at Da Nang Airport and the eSIM for Vietnam doesn't connect?

Accepted Answer

While our Vietnam eSIMs are highly reliable, we offer 24/7 support if you encounter issues. Simply connect to the free airport Wi-Fi and reach out via email. Most connection issues are resolved by simply toggling the Data Roaming switch to ON for the SimCorner eSIM Vietnam in your cellular settings, which is required for the eSIM to communicate with local Vietnamese towers.

Question 9

Is 5G data available everywhere in Vietnam?

Accepted Answer

5G is currently available in major city centres like Hanoi and Ho Chi Minh City. In more regional areas or during transit between provinces, your Vietnam eSIM will automatically switch to 4G/LTE. This ensures you have the most stable connection possible, regardless of whether you are in a high-tech urban hub or a rural village.

Question 10

Will my WhatsApp work while travelling in Vietnam?

Accepted Answer

Yes, your WhatsApp will function exactly as it does at home. Because the SimCorner eSIM for Vietnam provides a dedicated data connection that works alongside your primary SIM, your account remains tethered to your original phone number. You can message, call, and share media seamlessly without losing your chat history or needing to re-verify your account.

Question 11

Is my phone compatible with the Vietnamese eSIM?

Accepted Answer

Yes, most modern flagship smartphones from Apple (iPhone XS and later), Samsung (Galaxy S20 and later), and Google (Pixel 3 and later) support eSIM technology. To be certain, your device must be network-unlocked.  Pro-Tip: Dial *#06# on your keypad; if you see an EID number listed, your phone is eSIM-compatible.

Question 12

When is the best time to install my Vietnam eSIM data plan?

Accepted Answer

We recommend installing your Vietnam eSIM before your departure while you have a stable home Wi-Fi connection. While the Data Roaming toggle should stay OFF until you land, pre-installing the profile ensures you have an immediate 5G/4G connection the moment your plane touches down and you switch Data Roaming ON. It helps you bypass the need to connect to unreliable airport Wi-Fi for your eSIM setup.

Question 13

Does the Vietnam eSIM come with a local phone number?

Accepted Answer

This is a data-only travel eSIM and does not include a local Vietnamese (+84) phone number for traditional voice calls or SMS. However, you can maintain full voice and text connectivity by using data-based apps like WhatsApp, FaceTime, Viber, and Messenger. This allows you to stay connected with high-speed data without the privacy risks, mandatory passport uploads, or long retail queues associated with local SIM registrations.

Question 14

What is covered by the SimCorner 100% money-back guarantee?

Accepted Answer

We stand behind our connectivity. Our 100% money-back guarantee covers you if your device is confirmed to be eSIM-compatible and unlocked, yet you experience a verified network failure that our 24/7 technical support team cannot resolve. Simply reach out via the SimCorner App or email so our experts can assist with real-time troubleshooting or process a prompt refund.

Best Vietnam eSIMs for Australian Travellers: 5G Data from $5AUD

Vietnam Flexi Data eSIM

Vietnam Unlimited eSIM

Vietnam Ultra Data eSIM

Vietnam Flexi Data eSIM

Vietnam Unlimited eSIM

Vietnam Ultra Data eSIM