For mobile internet in Vietnam, compare a travel eSIM, a local SIM and your home carrier’s roaming offer. Wi-Fi can supplement any of them, but it will not necessarily be available during a transfer or when plans change outside your accommodation.
The first decision is whether you need only internet or also a Vietnamese telephone number. Then check your phone, travel dates and route before choosing an allowance.
At NoveSIM, we provide Vietnam travel eSIMs for mobile data. Our plans do not include a local number, conventional calls or carrier SMS. You can use internet messaging and calling apps with the connection, while account registration and verification remain separate requirements.
Quick answer: Compare our data-only eSIM with your included roaming when you need maps, bookings and app messages. Consider a local voice service if a Vietnamese number is essential. Check the selected plan’s validity and network access, prepare offline information for the route and test the connection before relying on it for transport.
Top Vietnam eSIMs
Vietnam eSIM
Fixed
1 GB, 7 days€ 3.112 GB, 15 days€ 4.443 GB, 30 days€ 5.77Unlimited
Unlimited, 1 day€ 3.11Unlimited, 3 days€ 7.10Unlimited, 5 days€ 11.09
Asia eSIM
Fixed
1 GB, 7 days€ 4.442 GB, 15 days€ 7.993 GB, 30 days€ 10.65Unlimited
Unlimited, 1 day€ 5.77Unlimited, 3 days€ 15.53Unlimited, 5 days€ 25.30Choose the connection that fits your trip
| Option | Useful when | Check before choosing |
|---|---|---|
| Our travel eSIM | You need mobile data and have a compatible, unlocked phone. | Allowance, validity, activation conditions, supported networks and hotspot terms. |
| Local SIM or operator eSIM | You need a Vietnamese number or conventional local calls. | Which services are included, visitor registration and purchase conditions, and device compatibility. |
| Home-carrier roaming | Your existing account includes suitable Vietnam service. | Total trip cost, daily triggers, data limits and separate call charges. |
| Accommodation or public Wi-Fi | You can connect at a particular property or venue. | Access conditions and what you will do after leaving that connection. |
Compare the live allowance and validity on our Vietnam eSIM plans. Use our Vietnam SIM card guide for local-number options, or check Vietnam roaming charges and billing checks before using your home line. An extra plan may be unnecessary if your existing service already meets the trip’s needs.
Check the route, not just the country name
A plan covering Vietnam does not promise the same reception in every building, on every road or throughout an island visit. Check supported networks for the exact plan and use coverage information as a planning aid. Available 4G or 5G service depends on the plan, phone, location and local coverage.
- Hanoi, Ho Chi Minh City or Da Nang: save your accommodation address and pickup instructions before leaving the airport or hotel. A venue’s indoor reception can differ from the street outside.
- Sapa or a mountain-road itinerary: download the route and essential bookings before departure. Keep meeting points and useful contacts accessible without a live connection.
- Phu Quoc or another island stop: check the places you will actually visit, including transfers and accommodation, rather than assuming one location represents the whole island.
- Ha Long Bay or a ferry journey: save tickets and arrangements before boarding. A country mobile-data plan is not a promise of offshore or onboard maritime service.
Our Vietnam mobile-network guide can help with the network comparison. Check any onward country separately: a Vietnam plan’s name does not establish coverage in Cambodia, Laos, Thailand or another destination.
Size the allowance from your actual usage
Trip length alone cannot tell you how many gigabytes to buy. Two people travelling for the same week may use very different amounts if one mainly checks maps and messages while the other uploads video or shares a laptop hotspot.
Review recent mobile-data usage by app, check the measurement dates and divide the total by the number of days. Use that daily average as a starting point for the Vietnam portion of the trip, then allow for travel days without dependable Wi-Fi. Account for laptop transfers and video calls separately.
Compare both the total allowance and any daily high-speed limit. An unlimited label does not by itself mean unlimited high-speed data. Check the current product terms, and use our Vietnam data-planning guide for the allowance decision.
Prepare the first journey before switching connections
Save the hotel name, address, booking reference and pickup instructions while you still have dependable internet. If a transport app needs account verification, complete the steps you can before travelling. Mobile data does not supply a carrier SMS code or guarantee that an account will accept a booking or payment.
- Check your exact model against our eSIM-compatible device list and confirm that the phone is carrier-unlocked.
- Read the selected plan’s installation, activation and validity conditions before adding the profile.
- Install over a stable internet connection at the time permitted by those instructions.
- Label the home and travel lines, then select the travel eSIM for Mobile Data or Cellular Data in the covered destination.
- Enable Data Roaming on our eSIM as instructed. Keep it off on the home SIM and disable automatic mobile-data switching when you do not want that line used for data.
- Test a webpage and the app you need for the transfer, then monitor the travel balance separately from the home-carrier account.
If manual APN entry is required for our eSIM, use data.esim. Do not delete an installed eSIM while troubleshooting unless our support team instructs you to do so. Follow our Vietnam eSIM troubleshooting guide if the connection does not work.
Keep your home number under separate control
On a compatible dual-SIM phone, the home line can remain enabled while the travel eSIM supplies data. Calls, SMS and voicemail on the home line remain subject to that carrier’s service and charges; turning off its Data Roaming switch does not disable those services.
Your existing WhatsApp account can use a different mobile-data connection without changing its registered number. Keep account access and any required verification method available, especially if changing phones or signing in again during the trip.
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FAQ
What is the best way to get mobile internet in Vietnam?
Choose according to the services you need. Our travel eSIM is a data-only option for a compatible, unlocked phone. Compare it with included home roaming, or investigate a local voice service when a Vietnamese number is essential.
Will a Vietnam eSIM work throughout my route?
Coverage depends on the selected plan, supported networks, device and local conditions. Check your actual stops and keep essential information offline, especially for remote roads and boat journeys.
How much data should I buy?
Start with recent phone usage over a comparable period, then allow for extra navigation, uploads or tethering. Check that the allowance and validity cover the Vietnam travel dates; duration alone is not a reliable data estimate.
Can I keep my usual number with a NoveSIM eSIM?
A compatible dual-SIM phone can keep the home line enabled while our eSIM supplies data. Our plan does not replace the home number or provide carrier SMS, and home-line charges still need checking.
Final Recommendation
Choose mobile internet for Vietnam by checking the services you need, the route and your phone before comparing prices. Use our data-only plans when you need internet, and arrange a voice service separately if a local number matters.
Match the allowance to measured usage and the validity to your travel dates. Save arrival details and route information offline, then test the selected data line before leaving a dependable connection.
Compare our current Vietnam plans once those requirements are clear. Keep the home line’s data and call settings under separate control so the travel-data choice does not create an unexpected home-carrier bill.