For first-time travelers visiting Vietnam, investing in a local SIM is a smart choice that offers both cost efficiency and convenience. Let’s go on with all the things you need about the Vietnam SIM card for tourists!

Why do you need to get a prepaid Vietnam SIM card?

Using a Vietnam SIM card during your vacation is a great way to save money. International roaming allows you to use your home mobile network abroad, but it often comes with a lack of connection and high data, calls, and text costs. 

On the other hand, even when you can access public wifi in Vietnam, local SIMs always provide stronger signals and faster data speeds in most areas.

Local SIMs always provide stronger signals and faster data speeds in most areas, especially rural areas. | Source: Viettel.

Using a Vietnam SIM card will allow you to access local apps for transportation such as Bus Maps, local ride-hailing apps (XanhSM and Be); ordering food and more, which is essential when traveling. 

Another reason is that having a local SIM makes it easier to stay in touch with friends and family. You’ll have better network coverage and be connected all day long, it’s also easier to make local calls (booking tours, and restaurants) and keep in touch with any random local friends that you just meet on the trip. 

>>>> A local SIM card is a smart choice for a worry-free and enjoyable trip in Vietnam.

How much does a SIM card cost in Vietnam?

The Vietnam sim card cost may vary depending on the sim form, data, and its validity.

• For a physical SIM card, the SIM card itself costs about 50,000 VND (~$2.50). You’ll generally purchase your Vietnam SIM card as part of a mobile data package that will give you anywhere from 5GB – 30GB of data and cost between 150,000 – 300,000 VND ($6.50-$15).
• For eSIM, they’re slightly more expensive on average, it costs you $9-$15. 

SIM card and eSIM. | Source: Collected.

However, they’re very affordable compared to international roaming expenses.

>>> Read more: Currency in Vietnam – Mastering Money Exchange in Vietnam

Choosing the best network provider: Viettel, Vinaphone, or Mobifone?

There are 3 main SIM providers in Vietnam, which are Viettel, Vinaphone, and Mobifone. First of all, I will show you the comparison of Mobile Network Coverage in Vietnam of those providers.

Comparison of Mobile Network Coverage in Vietnam: Viettel, Vinaphone, MobiFone. | Source: nPerf.

We can see that the coverage of Viettel is larger than the others and the purple area shows 5G coverage in Vietnam. This is the advantage of Viettel for those who plan to travel throughout my beautiful country. 

Next, let’s check out the summary of 3 SIM Card providers by Coverage, Speed and Price:

>>>> From the above summary, I can conclude that Viettel is the best choice for travelers because its wide coverage ensures you stay connected even in remote regions. If you cannot find any Viettel store, Vinaphone is also a great option.

Just choose the provider that best matches your travel plans to ensure a hassle-free experience in Vietnam.

Can you buy a Vietnam SIM card at the airport?

Generally, most first-time travelers worry about the connection signal after arriving and buy a Vietnam SIM card at the airport immediately. It costs about $18-$20 each. 

Noi Bai International Airport. | Source: kkday.

This way, you’ll avoid using international roaming and have coverage from the first step to Vietnam.

But, should you fall for a SIM card switch at the Airport?Buying a SIM card outside the airport is always cheaper. Go to a Viettel or any official store to get one and you can get 2GB per day data only monthly SIMs for super cheap.

Where can you buy a Vietnam SIM card outside the airport?

As a local, and an experienced traveler, I recommend that you should come to official providers or reputable retailers like FPT, Thegioididong, or Cellphone S. At the stores, they will offer more various data packages suitable for your plan at a reasonable price and you can still find a decent deal there, ask them about special deals for tourists. 

Viettel official store. | Source: Viettel.

When buying a SIM card, make sure you ask them about the payment methods they accept. Nowadays, You’ll probably be able to pay with your credit card or debit card.

Money-Saving Tips: Don’t overspend on data you won’t use.

How to activate and top up your SIM card in Vietnam?

The seller at the store will guide you carefully, but if needed, you can follow this step-by-step guide to use your Vietnam SIM card: 

Step 1: Inserting the SIM Card

1. Power off your phone and use a SIM card ejector tool to remove your current SIM tray.

2. Insert the new SIM card into the tray. Make sure it is correctly aligned with the slot.

3. Power your phone back on to detect the SIM card automatically.

Step 2: Activating the SIM Card

1. Dial the activation code provided with your SIM card or follow the instructions given by the vendor.

2. Some SIM cards may require you to send an SMS to a specific number or make a test call to activate. This information will be included in the SIM card package.

3. Once activated, you should receive a confirmation SMS indicating that the SIM is ready for use.

Step 3: Checking Your Balance

1. Dial the USSD code (a combination of symbols and numbers) given by your network provider to check your remaining balance. For example:

• Viettel: *101#
• Vinaphone: *101#
• Mobifone: *101#

2. You can also check your balance through the provider’s app if available.

Step 4: Topping Up Your Account

1. Using Scratch Cards:

  – Purchase a scratch card from convenience stores or official vendors.

  – Dial the USSD code on the card and enter the PIN. For example, type *100*<PIN code># and press call.

2. Online Top-Up:

  – Visit the official website of your network provider and follow the steps to top up using a credit card or e-wallet.

3. Mobile Banking:

  – Use your bank’s mobile app to choose the ‘top-up’ option and select your network provider. Enter your phone number and the desired amount.

By following these steps, you’ll easily activate and manage your SIM card in Vietnam, ensuring you stay connected throughout your journey.

>>> Read more: 10 things to know before visiting Vietnam.

Troubleshooting Common Issues with Your Vietnam SIM Card

Common Issues with Your Vietnam SIM Card. | Source: Collected.

While using a SIM card in Vietnam, tourists might face some common issues. Here are the typical problems and quick solutions:

1. SIM Card Not Working

Problem: Your phone doesn’t recognize the SIM card, or you get a “No SIM” or “SIM not detected” error.

Solution:

1. Check if the SIM card is properly inserted in the tray. Remove it, wipe the contacts gently, and reinsert it.
2. Restart your phone to refresh the network connection.
3. Ensure your phone is unlocked and supports the network frequencies used in Vietnam.
4. If the issue persists, try inserting the SIM card into another phone to check if the problem is with the SIM or your device.
5. Visit the provider’s store if you still can’t get it working.

2. Data Connection Issues

Problem: The SIM card is recognized, but you’re not getting internet access.

Solution:

1. Check your APN settings (Access Point Name). These should automatically configure, but if not, manually input the APN details provided by your network provider. You can find these in the SIM card package or on the provider’s website.
2. Restart your phone after updating the APN settings.
3. Make sure mobile data is enabled on your phone and check that you’re not in airplane mode.
4. Switch between 3G and 4G (or 5G) in your phone’s network settings to see if it improves connectivity.

3. Running Out of Data

Problem: You’re running out of data quickly, and your connection is throttled or cut off.

Solution:

1. Check your data balance using the USSD code for your provider to confirm how much data you have left.

• Viettel: Checking via SMS by composing a message with KTTK send 191 (free of charge).
• Vinaphone: dial *123# OK or *111# and press key 4.
• Mobifone: dial *090# and press key 5. 

2. If you’ve exhausted your data allowance, top up your account by purchasing a data package or using a scratch card or online method.

4. Difficulty Topping Up

Problem: You’ve purchased a scratch card, but the top-up isn’t working, or you’re struggling to top up online.

Solution:

• Ensure you’ve entered the USSD code correctly. Double-check the PIN and retry the code (e.g., 100<PIN>#).
• If you’re topping up online, verify your payment details and ensure your card or e-wallet has sufficient balance.
• Restart your phone after topping up to refresh the new data balance.

5. Additional Tip: Contacting Customer Support

If none of these solutions work, contact customer support for your network provider:

• Viettel: 18008098 or 198
• Vinaphone: 18001091
• Mobiphone: 18001090

They usually have English-speaking representatives available to help tourists. You can find their contact numbers on the SIM card packaging or on the provider’s website.

Finally, 

Having a local SIM card in Vietnam can greatly enhance your travel experience, providing reliable and affordable connectivity. By following these setup and troubleshooting tips, KissTour ensures you’ll be prepared to handle common issues and stay connected throughout your journey. 

Whether you’re navigating with maps, ordering rides, or sharing moments with friends and family, a well-chosen SIM card will ensure smooth communication and convenience. Enjoy your time in Vietnam with the confidence that you’re always connected and ready for any adventure!