Question 1

What is the best eSIM for {{Country}}?

Accepted Answer

SimCorner stands out as the best eSIM for {{Country}}, balancing top-tier network coverage, flexible data packages, instant email delivery, and seamless QR code activation. Whether you are travelling for work or vacation, our eSIM {{Country}} plans deliver local 5G/4G speeds with no roaming fees.

Question 2

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 3

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 4

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 5

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 6

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 7

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 8

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 9

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 10

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 11

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 12

When is the best time to install my eSIM {{Country}} data plan?

Accepted Answer

We recommend installing your eSIM {{Country}} before departure or at the airport before boarding. The installation requires a stable internet connection. Completing this step ahead of time ensures that your eSIM is ready to connect instantly upon arrival.Note: Some eSIMs activate directly upon scanning the QR code. Check ‘Things to Know’ on the product page, or refer to your post-purchase email for your custom setup guide.

Question 13

How do I install and activate my eSIM {{Country}}?

Accepted Answer

iPhone: Go to Settings > Mobile > Add eSIM. Android: Go to Settings > Connections > SIM manager > Add eSIM.Scan your QR code or enter details manually. Label the line as ‘SimCorner eSIM’. Upon arrival, simply turn ON Data Roaming and Mobile Data for your SimCorner line to connect.

Question 14

Do I need an active internet connection to install my {{Country}} eSIM?

Accepted Answer

Yes, a stable Wi-Fi or cellular data connection is mandatory during the initial installation phase. Your device must communicate directly with the network servers to download the digital eSIM profile. Attempting to install the eSIM {{Country}} without an internet connection will result in a setup failure.Note: Most SimCorner eSIMs do not need internet for activation. Enabling data roaming triggers the activation.

Question 15

Can I install the {{Country}} eSIM using a screenshot or image from my gallery?

Accepted Answer

Yes, with most modern iOS and Android devices, you can upload a screenshot or image directly through the Add eSIM menu. If your specific device does not support gallery uploads, you can display the {{Country}} eSIM QR code on a laptop, tablet, printout, or secondary screen and scan it using your phone's camera.

Question 16

When does the validity countdown start, and how are days calculated?

Accepted Answer

The validity period does not begin upon purchase or installation. The countdown starts only when your eSIM {{Country}} gets activated by connecting to a supported local network. From the activation time, your plan days are calculated based on continuous 24-hour cycles.

Question 17

Does the {{Country}} eSIM expire if left unactivated?

Accepted Answer

No, our {{Country}} eSIM does not expire or get auto-activated, unlike many other eSIM providers who enforce 15–30-day activation periods. You can safely purchase your eSIM data plan months in advance during a sale or while planning your itinerary. Your eSIM {{Country}} remains dormant and ready for use whenever your trip begins.

Question 18

Can I transfer my active eSIM {{Country}} profile to another phone?

Accepted Answer

No, travel eSIMs are single-use digital profiles that lock to the physical hardware of the initial device. Once a QR code has been scanned, it cannot be transferred to a different handset. Additionally, if you delete the profile from your settings, it cannot be re-scanned or reused.

Question 19

How do I track my data balance and purchase top-ups?

Accepted Answer

You can use the SimCorner App for live data tracking and instant on-the-go recharges. If you prefer not to use the app, you can also monitor your usage directly through your device's native cellular settings. Please note that top-up availability varies by product, so be sure to check your specific product details before purchasing to confirm if your chosen plan is eligible for recharges.

Question 20

How do I check if my device is eSIM compatible?

Accepted Answer

iOS:Go to Settings > General > AboutScroll down to Available SIM (or Digital SIM).If an IMEI or EID number is listed, your iPhone supports eSIM.Android:Dial *#06#on your keypad.If an EID (Embedded Identity Document) number appears on your screen, your device supports eSIM.

Question 21

How do I check if my device is carrier-unlocked?

Accepted Answer

iOS: Navigate to Settings > General > About and find Network Provider Lock. If it says No SIM restrictions, your device is unlocked.Android: The most accurate test is to temporarily insert a physical SIM card or install an eSIM from a different mobile network. If your phone connects to the network and you can make a call or use data, your device is unlocked.

Question 22

Can I use {{Country}} eSIM if my phone is currently locked to a network carrier?

Accepted Answer

No, you cannot use an eSIM {{Country}} if your phone is locked to your home provider. Carrier-locked phones automatically reject any third-party travel eSIM profiles. You must contact your current carrier to fully unlock your device before attempting to install or activate our {{Country}} travel eSIM.

Question 23

Why are iPhones from Mainland China, Hong Kong, or Macau incompatible?

Accepted Answer

Apple manufactures iPhones for the Chinese, Hong Kong, and Macau markets without an internal eSIM chip. To comply with local regulatory demands and consumer preferences, Apple replaced the eSIM hardware entirely with a dual-sided physical tray for nano-SIMs.Got an iPhone from one of these regions? Explore our physical {{Country}} SIM card options.

Question 24

How many eSIM profiles can I store and run on my phone at the same time?

Accepted Answer

Storage: Most modern smartphones allow you to download and store between 5 and 10 distinct eSIM profiles directly on their internal chip.Usage: While you can store many, you can generally only run one or two profiles actively alongside your primary home SIM card at any given time, depending on your device generation.

Question 25

Will this eSIM work on a jailbroken (iOS) or rooted (Android) device?

Accepted Answer

Yes, but we cannot guarantee optimal network performance because jailbreaking or rooting modifies core security protocols. Security flags within cellular operating systems can occasionally interfere with the profile registration process or prevent automatic network connections.

Question 26

Can I keep my home SIM in my phone alongside the eSIM {{Country}}?

Accepted Answer

Yes, modern smartphones feature Dual SIM technology, allowing your physical home SIM and your digital eSIM {{Country}} to run simultaneously. You simply assign data usage to your SimCorner profile while keeping your home line active for incoming OTPs.Note: Receiving incoming calls will trigger roaming charges from your home provider.

Question 27

Can I keep my original WhatsApp and iMessage accounts?

Accepted Answer

Yes, these services are linked to your home phone number or account rather than the SIM card. When you insert your eSIM {{Country}}, your apps may prompt you to update your number—always select Keep Existing Number. This ensures your account, chat history, and contacts remain tied to your home number, allowing you to message and call as usual throughout your trip.

Question 28

Does my {{Country}} unlimited data eSIM have a hidden Fair Usage Policy (FUP) throttle?

Accepted Answer

No, we believe in complete transparency. Unlike other providers who hide their speed drops in fine print, our limits are fully disclosed up front. Your eSIM {{Country}} unlimited plan includes:High-Speed Data: 3GB of 4G/5G data per day.Speed After 3GB: If you exceed 3GB in a day, your speed drops to 128kbps.Reset Time: Every 24 hours from the exact time of your initial activation.

Question 29

Can I still receive bank SMS codes (2FA) while using eSIM {{Country}}?

Accepted Answer

To receive bank verification SMS codes (2FA) using our eSIM for {{Country}}, your device must support Dual SIM functionality so your home SIM remains active alongside your travel plan.Pro-Tip: If your phone only runs one active SIM at a time, your home line will become temporarily inactive. To prevent losing account access, we highly recommend setting up email-based 2FA or an authenticator app before you depart.

Question 30

My trip was canceled; can I get a refund if I haven't used the eSIM?

Accepted Answer

Yes, you can get a refund. Please reach out to our 24/7 customer support as soon as possible.If your travel plans change or your trip is canceled, SimCorner offers a flexible refund policy for unused profiles. As long as your eSIM {{Country}} has not been installed or activated on a device, you are eligible for a return and refund.

Question 31

What are the SimCorner 5% price beat and 30-day price lock guarantees?

Accepted Answer

5% Price Beat: If you find an identical, cheaper travel plan from another provider, even on sale, we will beat their listed price by 5%.30-Day Price Lock: If our own price falls within 30 days of your purchase, we will credit you the difference.To learn more about how we protect your travel budget, visit SimCorner’s purchase guarantees.

Question 32

What is the SimCorner 100% money-back guarantee policy?

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 to us at support@simcorner.com so our experts can assist you with real-time troubleshooting or process a prompt refund.

eSIM Vietnam: Prepaid 5G/4G Data Plans

Flexi

Vietnam Flexi Data eSIM

Unlimited

Vietnam Unlimited eSIM

Ultra

Vietnam Ultra Data eSIM