Best eSIM for Vietnam (2026): What Australians Should Know

If you’re an Australian heading to Vietnam and wondering how to stay connected without paying a fortune in roaming charges, you’re in the right place. Getting mobile data sorted for your Vietnam trip doesn’t need to be complicated, and an eSIM is often the simplest solution. 

This guide explains everything Australian travellers need to know about using eSIMs in Vietnam—what they are, how they work, which options suit different travel styles, and how to set one up before you leave Australia. Whether you’re visiting for a week or a month, we’ll help you choose the right option and avoid common pitfalls. 

Do Australians Need a SIM or eSIM in Vietnam? 

You don’t technically need one, but you’ll want one. 

Here’s what happens if you travel to Vietnam without arranging mobile data: 

• No mobile data: You can’t use Google Maps, translation apps, grab a taxi via app, or search for restaurants unless you’re on WiFi 

• WiFi only: You’ll be hunting for cafes, hotels, or public WiFi constantly 

• International roaming charges: If you accidentally use your Australian SIM for data, you could face bills of hundreds of dollars 

• Emergency contact issues: Harder to stay in touch with family back home or make local calls 

Most Australian travellers to Vietnam arrange some form of mobile data. The question isn’t whether you need it—it’s which option works best for you. 

eSIM vs Physical SIM in Vietnam (for Australians) 

Buying a SIM Card in Vietnam

You have two main ways to get mobile data in Vietnam: a physical SIM card or an eSIM. Here’s how they compare: 

Physical SIM Card

What it is: A small plastic chip you physically insert into your phone 

Where you get it: 

• At Vietnamese airports when you arrive (common option) 

• From mobile shops in Vietnamese cities 

• Sometimes pre-ordered online and delivered to Australia 

Pros: 

• Available at airports immediately on arrival 

• Works with any phone (even older models) 

• Can be very cheap for local plans 

Cons: 

• You need to remove your Australian SIM (might lose it) 

• Queues at airport SIM shops can be long after busy flights 

• Your Australian number is inactive while using it (unless you have a dual-SIM phone) 

• Small and easy to lose 

• Requires fiddling with a SIM ejector tool 

eSIM 

What it is: A digital SIM card embedded in your phone that you activate via QR code or app 

Where you get it: 

• Purchase online before you leave Australia 

• Delivered via email (no physical delivery needed) 

Pros: 

• Set up before you leave Australia—ready to use on arrival 

• No need to remove your Australian SIM 

• Can keep your Australian number active for calls/texts 

• Nothing physical to lose or swap 

• Instant activation 

• Can buy and store multiple eSIMs for different trips 

Cons: 

• Only works with eSIM-compatible phones (iPhone XS and newer, newer Samsung, Google Pixels) 

• Slightly more expensive than local physical SIMs in some cases 

• Requires doing setup before you travel 

Which Should Australians Choose?

For most Australian travellers, eSIM is the better option if your phone supports it. The convenience of setting it up at home, keeping your Australian number active, and not dealing with physical SIM cards makes it worth any small price difference. 

Physical SIM cards still make sense if: 

• Your phone doesn’t support eSIM 

• You’re staying in Vietnam for several months and want the absolute cheapest local rates 

• You’re comfortable swapping SIM cards and don’t mind airport queues 

Why eSIM Is the Best Option for Most Australians

Here’s why eSIM has become the go-to choice for Australian travellers to Vietnam: 

Set Up Before You Leave

You can purchase and install your eSIM while still in Australia, test it works, and be ready to connect the moment you land in Vietnam. No hunting for SIM card shops or waiting in airport queues when you’re tired from the flight. 

Keep Your Australian Number Active 

With an eSIM, your Australian SIM stays in your phone. You can still receive important calls and texts to your Australian number (like bank verification codes) while using Vietnamese mobile data through the eSIM. 

No Physical Hassles 

Nothing to carry, nothing to swap, nothing to lose. Everything is digital. This is especially helpful if you’re traveling to multiple countries—you can have several eSIMs installed and switch between them. 

Reliable Coverage 

Major eSIM providers partner with Vietnam’s best networks (like Viettel, Vinaphone, or Mobifone), so you get the same coverage you’d get with a local SIM. 

Flexible Data Amounts 

Choose exactly how much data you need—from 1GB for a short trip to 50GB+ for extended stays. No commitment to monthly plans you won’t fully use. 

Works Across Vietnam 

Whether you’re in Hanoi, Ho Chi Minh City, Hoi An, or remote areas like Sapa or Ha Giang, your eSIM will work anywhere the network has coverage. 

What to Look for in a Vietnam eSIM (Coverage, Data, Compatibility)

Not all eSIMs are created equal. Here’s what matters when choosing one for Vietnam: 

Network Coverage 

The eSIM should connect to Vietnam’s major networks. The best networks in Vietnam are: 

• Viettel: Best overall coverage, especially in rural areas 

• Vinaphone: Strong in cities and tourist areas 

• Mobifone: Good nationwide coverage 

Most eSIM providers partner with one or more of these networks. Viettel generally offers the best coverage if you’re traveling outside major cities. 

Data Allowance 

Think about how you’ll use mobile data in Vietnam: 

• Light usage (1–3GB): Occasional maps, messaging, light browsing—suitable for short trips where you’ll mostly use hotel WiFi 

• Moderate usage (5–10GB): Regular maps, social media, messaging, video calls—good for 1–2 week trips 

• Heavy usage (20GB+): Constant navigation, streaming music, uploading photos, video calls—best for longer stays or if you work remotely 

As a rough guide, most Australians use 5–15GB for a 1–2 week Vietnam trip with normal tourist activities. 

Validity Period 

eSIMs come with different validity periods: 

• 7 days 

• 15 days 

• 30 days 

• Sometimes longer 

Choose one that covers your entire trip. If your eSIM expires before you leave Vietnam, you’ll lose connectivity. 

Phone Compatibility 

Your phone must support eSIM. Compatible phones include: 

Apple: 

• iPhone XS, XS Max, XR and all newer models 

• iPhone 14 and later (US models) are eSIM-only 

Samsung: 

• Galaxy S20 and newer 

• Galaxy Z Flip and Fold series 

• Galaxy Note 20 and newer 

Google: 

• Pixel 3 and newer 

Other brands: 

• Many newer Oppo, Motorola, and other Android phones 

How to check: Go to your phone settings and look for “eSIM” or “Add Cellular Plan.” If you’re unsure, search “[your phone model] eSIM compatible” online. 

Speed and Network Type 

Look for eSIMs that offer 4G/LTE speeds in Vietnam. 5G is available in some Vietnamese cities but isn’t widespread yet, so 4G is perfectly adequate for travellers. 

Customer Support 

Choose providers with: 

• English-language customer support 

• Clear setup instructions 

• Support available if you have issues in Vietnam (ideally 24/7) 

Price 

Vietnam eSIM prices typically range from AUD $5–$50 depending on data amount and validity. Expect to pay: 

• Around $5–$15 for basic plans (3–5GB, 7 days) 

• Around $15–$30 for standard plans (10–20GB, 15–30 days) 

• Around $30–$50 for large data plans (50GB+, 30 days) 

Best eSIM Options for Vietnam (Neutral Comparison) 

There are several types of eSIM providers Australians can use for Vietnam. Here’s how they compare: 

1. Dedicated eSIM Travel Providers 

These are companies that specialize in travel eSIMs for multiple countries. 

Characteristics: 

• Wide range of data plans specifically for Vietnam 

• Easy-to-use apps 

• Instant delivery via email or app 

• Generally user-friendly setup 

• Support multiple countries if you’re traveling regionally 

Best for: Most Australian tourists who want simple, reliable connectivity 

Typical pricing: Mid-range—not the cheapest but not expensive 

2. Global eSIM Marketplaces 

These platforms let you compare and purchase eSIMs from multiple providers. 

Characteristics: 

• Compare prices from different network providers 

• Often more competitive pricing 

• May require more research to choose the right option 

• Less hand-holding through setup 

Best for: Australians comfortable doing their own research who want the best price 

Typical pricing: Can find cheaper options but requires comparing 

3. Vietnamese Network Operators 

Some Vietnamese mobile networks now offer eSIM plans you can purchase online. 

Characteristics: 

• Direct from Vietnamese carriers like Viettel or Vinaphone 

• Often the cheapest option 

• May require more tech knowledge 

• Websites might be partially in Vietnamese 

• Best local network coverage 

Best for: Long-term stays or Australians who want the cheapest rates and don’t mind a bit more setup complexity 

Typical pricing: Generally cheapest but requires more effort 

4. Regional Asia eSIMs 

Some eSIMs work across multiple Asian countries including Vietnam. 

Characteristics: 

• One eSIM works in Vietnam, Thailand, Cambodia, etc. 

• Convenient if traveling to multiple countries 

• Sometimes less data per dollar than Vietnam-specific plans 

• Good if your plans aren’t finalized 

Best for: Australians visiting multiple Southeast Asian countries 

Typical pricing: Slightly higher but adds flexibility 

What Most Australians Should Choose 

For a straightforward Vietnam trip, dedicated eSIM travel providers offer the best balance of ease, reliability, and value. They’re designed for tourists, have good English support, and make the process simple. 

If you’re staying longer or traveling around Southeast Asia, consider regional eSIMs. If you’re tech-savvy and want to save money, look into Vietnamese network operators directly. 

How Australians Set Up an eSIM Before Travelling

Setting up an eSIM is simpler than it sounds. Here’s exactly what to do: 

Step 1: Check Your Phone Supports eSIM 

Go to your phone settings: 

• iPhone: Settings > Cellular/Mobile Data > Add Cellular Plan (if this option exists, you have eSIM) 

• Android: Settings > Connections > SIM Manager > Add eSIM (wording varies by brand) 

If you can’t find these options, your phone likely doesn’t support eSIM. 

Step 2: Choose and Purchase Your eSIM 

Select an eSIM provider and plan that matches your needs. You’ll need: 

• How many days you’re traveling 

• How much data you’ll use 

• Your travel dates 

Purchase online—most providers accept credit/debit cards. 

Step 3: Receive Your eSIM 

You’ll receive your eSIM via email, usually within minutes. This will include: 

• A QR code 

• Activation instructions 

• Manual installation details (if QR code doesn’t work) 

Important: Don’t delete this email—save it or screenshot the QR code. 

Step 4: Install the eSIM on Your Phone 

Before you leave Australia: 

iPhone: 

1. Go to Settings > Cellular/Mobile Data 

2. Tap “Add Cellular Plan” 

3. Scan the QR code with your camera 

4. Follow the prompts to label it (e.g., “Vietnam”) 

5. Choose when to use it (select “Turn on this line when traveling”) 

Android (Samsung/Pixel): 

1. Go to Settings > Connections > SIM Manager 

2. Tap “Add eSIM” 

3. Scan QR code 

4. Follow prompts to complete installation 

The eSIM is now installed but not yet active. 

Step 5: Activate When You Arrive 

Once you land in Vietnam: 

1. Turn on your phone 

2. Go to your phone’s settings and switch to your Vietnam eSIM 

3. Turn on Data Roaming for the eSIM (don’t worry—this is included in your eSIM plan) 

4. Wait 1–2 minutes for the connection to establish 

You should see a Vietnamese network name appear (like Viettel or Vinaphone) and have mobile data. 

Step 6: Test It Works 

Open your web browser or an app and check you have internet. Send a message, check Google Maps—make sure everything works. 

Troubleshooting if it doesn’t connect: 

• Restart your phone 

• Make sure data roaming is ON for your eSIM 

• Check you’ve selected the eSIM as your active data line 

• Wait a few more minutes—sometimes it takes time to connect

Common eSIM Mistakes Australians Make 

Avoid these common issues: 

1. Not Installing the eSIM Before Leaving Australia 

Many Australians wait until they arrive in Vietnam and then realize they need WiFi to download and install the eSIM. Install it at home while you have reliable internet—it won’t activate or use data until you turn it on in Vietnam. 

2. Forgetting to Turn Off Australian Data Roaming 

Make sure data roaming is OFF for your Australian SIM and ON only for your Vietnam eSIM. Otherwise, you might accidentally use your Aussie carrier and face huge roaming charges. 

How to check: 

• Go to your phone’s mobile data settings 

• Make sure your Australian SIM is set to “off” for data 

• Make sure your Vietnam eSIM is “on” for data 

3. Choosing Too Little Data 

Running out of data mid-trip is frustrating. Most Australians underestimate how much they’ll use. When in doubt, choose a larger plan—unused data costs less than the hassle of buying a second eSIM. 

4. Not Keeping the QR Code Email 

If something goes wrong with your eSIM and you need to reinstall it, you’ll need that QR code. Save the email or screenshot it before you travel. 

5. Buying an eSIM for Wrong Validity Period 

If you’re in Vietnam for 10 days, don’t buy a 7-day eSIM. Make sure the validity period covers your entire trip with a day or two buffer. 

6. Not Testing Before Leaving Accommodation 

Always test your eSIM works while you still have WiFi access at your hotel. Don’t discover it’s not working when you’re lost in a Vietnamese city with no data. 

7. Deleting the eSIM Profile by Accident 

Some Australians accidentally remove the eSIM from their phone settings while trying to troubleshoot. Be careful in settings—if you delete it, you’ll need the QR code to reinstall.

Using Australian Roaming vs eSIM in Vietnam

Should you just use your Australian mobile carrier’s roaming instead of an eSIM? 

Australian Roaming Costs 

Most Australian carriers (Telstra, Optus, Vodafone) offer international roaming, but it’s expensive: 

• Daily roaming passes: Usually $10–$15 per day to use your Australian plan overseas 

• Pay-as-you-go data: Can cost $10+ per megabyte if you don’t have a roaming pass 

For a 10-day Vietnam trip, roaming could cost $100–$150. 

eSIM Costs 

A Vietnam eSIM with ample data for the same trip typically costs $15–$30 total. 

The Verdict 

eSIMs are far cheaper for most Australians. You’ll pay a fraction of the cost compared to roaming. 

Consider roaming only if: 

• You have a carrier plan that includes free or heavily discounted international roaming 

• You’re only traveling for 1–2 days and the convenience is worth the extra cost 

• Your work pays for your roaming 

For typical Australian tourists on standard mobile plans, eSIM saves significant money while providing better data allowances. 

FAQs

Can I use WhatsApp, Facebook, and other apps with a Vietnam eSIM? 

Yes, your Vietnam eSIM provides regular mobile data just like your Australian SIM does at home. All apps work normally—messaging, social media, maps, email, video calls, everything. 

Can I still receive calls to my Australian number? 

Yes, if you keep your Australian SIM installed (which you can with eSIM). Incoming calls to your Aussie number will still come through. However, answering international calls can be expensive. Consider asking people to message you on WhatsApp instead. 

What happens if I run out of data? 

Your eSIM will stop working until you top up (if the provider offers top-ups) or purchase a new eSIM. Some providers let you buy additional data packs, others require buying a completely new eSIM plan. 

Can I use my eSIM as a WiFi hotspot? 

Most Vietnam eSIMs support hotspot/tethering, so you can share your connection with other devices like laptops or tablets. Check your specific provider’s terms, but this is generally included. 

Will my eSIM work in rural areas of Vietnam? 

Coverage depends on which network your eSIM uses. Viettel has the best rural coverage in Vietnam. If you’re visiting remote areas like Ha Giang or Sapa, check that your eSIM uses Viettel’s network. 

Can I install multiple eSIMs on my phone? 

Yes, most eSIM-compatible phones can store multiple eSIM profiles (typically 5–10). You can only have one active for data at a time, but you can switch between them in settings. 

Do I need to turn on data roaming? 

Yes, you need to enable data roaming specifically for your Vietnam eSIM. This is normal and won’t cause extra charges—your data is included in the eSIM plan you purchased. 

Ready to Get Connected? Here’s What to Do Next 

Staying connected in Vietnam as an Australian is simple with an eSIM. Here’s your action plan: 

1. Check your phone supports eSIM – look in settings for “Add eSIM” or “Add Cellular Plan” 

2. Calculate your data needs – consider how much you’ll use maps, social media, and messaging 

3. Choose an eSIM provider – look for one offering Vietnam coverage on reliable networks (ideally Viettel) 

4. Purchase your eSIM at least 2–3 days before departure – gives you time to install and test it 

5. Install the eSIM while still in Australia – don’t wait until you arrive 

6. Save the QR code email – keep it accessible in case you need to reinstall 

7. Turn off data roaming for your Australian SIM – avoid accidental roaming charges 

8. Activate your eSIM when you land in Vietnam – should connect within 1–2 minutes 

With your eSIM sorted, you can focus on enjoying Vietnam—navigating confidently with Google Maps, staying in touch with home, sharing photos instantly, and booking transportation without hunting for WiFi. 

Safe travels, and enjoy staying connected in Vietnam! 

Last reviewed: Feb 2026
Content on this page is reviewed regularly (approximately every 3 weeks) to reflect changes to visa rules, entry requirements, and common issues affecting Australian travellers. Where requirements are critical, official government sources are referenced.