Question 1

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

Accepted Answer

Yes, your eSIM Vietnam is designed for mobility. Coverage remains strong along the main railway corridors and in Sapa. By using carriers 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 eSIM Vietnam to book rides on the Grab app?

Accepted Answer

Absolutely, you can use the eSIM Vietnam to book rides on the Grab app. The eSIM Vietnam 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 carriers provided in our plans, such as Viettel, VinaPhone, and MobiFone, offer excellent coverage across Phu Quoc Island. Your eSIM Vietnam 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 eSIM Vietnam 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 Vietnam eSIM data with my partner?

Accepted Answer

Yes, our eSIM Vietnam 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 traveling 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 eSIMs Vietnam 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 Vietnam eSIM 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 widely available across Vietnam, covering roughly 90% of the population, including all major urban areas, regional towns, and tourist hubs. In more remote rural areas or during long-distance transit between provinces, your eSIM Vietnam will automatically switch to the country's near-flawless 4G/LTE network. This ensures you maintain the strongest and most stable data connection possible, whether you are in a high-tech city or a traditional village.

Question 10

Will my WhatsApp work while travelling in Vietnam?

Accepted Answer

5G is currently available in major city centers like Hanoi and Ho Chi Minh City. In more regional areas or during transit between provinces, your eSIM Vietnam 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 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 carrier-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 eSIM Vietnam data plan?

Accepted Answer

We recommend installing your eSIM Vietnam 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 eSIM Vietnam 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.

Question 15

How do I activate my eSIM Vietnam?

Accepted Answer

To activate your eSIM Vietnam, purchase a plan from SimCorner, receive the QR code by email, and scan it with your eSIM-compatible phone. Activation usually takes a few minutes. Once installed, you can switch between your home SIM and your Vietnam eSIM from your phone settings.

Question 16

When should I activate my eSIM card for Vietnam?

Accepted Answer

You can install your eSIM Vietnam before your trip to make setup easier while still on your home network. In most cases, however, it’s best to activate it only after arriving in Vietnam to maximise the plan’s validity period. SimCorner plans begin once the eSIM connects to a local Vietnamese network.

Question 17

Can I keep my original number while using a Vietnam eSIM?

Accepted Answer

Yes, you can keep your original number for calls and messages while using the Vietnam eSIM for mobile data, provided your device allows dual SIM functionality. If it doesn’t support a dual SIM setup, your phone number will be changed. This is ideal for staying in touch with family while avoiding expensive roaming charges.

Question 18

Do I need internet or Wi-Fi to activate my eSIM Vietnam?

Accepted Answer

Yes, you’ll need an internet or Wi-Fi connection to initially download and install the eSIM profile. You can activate it using Wi-Fi at the airport, your hotel, or any hotspot. Once activated, the eSIM connects automatically to local networks.

Question 19

Do Vietnam eSIMs include calls and SMS?

Accepted Answer

Our Vietnam eSIMs are designed for data-only use and do not include calls or SMS. If you need voice services, you can use apps like WhatsApp, Viber, or Skype over data. Choose from fixed-data or unlimited plans depending on how much connectivity you’ll need during your trip.

Question 20

How long are Vietnam travel eSIM plans valid?

Accepted Answer

Vietnam travel eSIM plans are flexible, with validity periods ranging from 5 to 90 days. Short-term travellers can choose smaller data packs, while long-term visitors, expats, or digital nomads may prefer unlimited or extended plans for continuous coverage.

Question 21

Can I top up or extend my Vietnam eSIM plan?

Accepted Answer

Currently, SimCorner prepaid Vietnam eSIMs cannot be topped up directly. If you need more data or validity, you can purchase another eSIM plan and activate it once your current plan expires. This ensures you’re always connected.

Question 22

Can I use my Vietnam travel eSIM in other countries?

Accepted Answer

No, you cannot use your Vietnam travel eSIM in other countries. If you’re visiting multiple destinations, we recommend choosing a regional Asia eSIM or a global eSIM plan. With this,  you can stay connected across different countries with just one activation, avoiding the need for separate eSIMs.

Question 23

How good is eSIM coverage in Vietnam?

Accepted Answer

Our eSIM coverage in Vietnam is excellent in major cities like Hue, Ho Chi Minh City, and Sapa, with reliable 4G/5G service. Speeds and coverage in rural or remote areas are generally good, but they may vary depending on location and local network availability.

Question 24

Which networks do SimCorner eSIM Vietnam use?

Accepted Answer

SimCorner Vietnam eSIMs connect to leading local providers such as Viettel and Vinaphone, ensuring strong coverage and fast speeds. This allows travellers to enjoy reliable internet for browsing, maps, and video calls throughout the country.

Question 25

Will my Vietnam eSIM work at tourist spots?

Accepted Answer

Yes, Vietnam eSIMs work at popular tourist destinations, including Ha Long Bay, Hoi An, Phu Quoc, Ha Long Bay, and the Mekong Delta. You can rely on strong connectivity for navigation, booking rides, and sharing travel updates across social media.

Question 26

Is 5G available with eSIM Vietnam plans?

Accepted Answer

Yes, most SimCorner Vietnam eSIMs support 5G where networks are available. In major cities, you can enjoy fast 5G speeds, while in smaller towns or rural areas, service might switch to 4G LTE or 3G.

Question 27

Which phones support eSIM for Vietnam?

Accepted Answer

Popular models like iPhone XS or later, Google Pixel 4 and newer, plus select Huawei and Oppo phones support eSIM for Vietnam. However, always ensure your device is unlocked and eSIM-compatible before you buy your plan, and you’ll be ready to connect instantly.

Question 28

How can I check if my phone is eSIM-compatible?

Accepted Answer

Check your phone settings: on iPhone, go to Settings > Cellular > Add Cellular Plan. If the option appears, your device supports eSIM. On Android, look under Settings > Connections > SIM Manager. You can also check the “Device Compatibility” option provided at the upper right side of each of our eSIM Vietnam plans.

Question 29

Can I use my Vietnam eSIM on multiple devices?

Accepted Answer

No, once an eSIM QR code is scanned and installed on one device, it cannot be reused on another. Each Vietnam eSIM is designed for single-device use; however, you can switch between different profiles. If you need multiple devices connected, purchase separate plans.

Question 30

Do tablets and smartwatches support eSIM Vietnam?

Accepted Answer

Yes, many eSIM-enabled tablets, including iPad Pro and iPad Air (3rd generation or later), as well as select smartwatches, support Vietnam eSIMs for data use. Calling features are not always available on wearables, so confirm compatibility before purchase.

eSIM Vietnam: Prepaid 5G/4G Data Plans

Vietnam eSIM

Flexi

Vietnam Flexi Data eSIM

Unlimited

Vietnam Unlimited eSIM

Ultra

Vietnam Ultra Data eSIM