Vietnam SIM Card: Best 4G/5G Data Packages for Travel

Does Vietnam have 5G? The short answer

Yes. Viettel launched commercial 5G on 15 October 2024 and VNPT (VinaPhone) followed on 20 December 2024, and MobiFone has also commercialised 5G. 4G has been the everyday standard for much longer: Viettel opened its nationwide 4G network on 18 April 2017. At the other end, the old 2G network has been retired: networks stopped serving 2G-only phones in October 2024 and began switching 2G off nationwide from 15 September 2026, with exceptions only for special areas.

For a visitor, that means a modern phone on a Vietnamese SIM will normally use 4G, and 5G where your phone, your package and the location all support it. This guide explains how to tell whether 5G will work for you, how to judge a data package without relying on outdated price lists, and what to do when mobile data does not work. To compare the three networks themselves, see our Viettel vs VinaPhone vs MobiFone guide.

Vietnam’s mobile networks: key dates

The 4G date comes from VietNamNet’s report on Viettel’s launch; the 5G dates from a Vietnam News Agency report and a VietnamPlus article; the 2G dates from a July 2026 article republished on the Hà Tĩnh provincial portal. Full links are listed at the end of this guide.

Does 5G work for tourists in Hanoi and Ho Chi Minh City?

It can, but three conditions must all be met. If any one of them is missing, your phone will simply use 4G.

1. Your phone must support 5G and the network’s frequencies. A phone sold as “5G” in one country does not necessarily support every 5G frequency used elsewhere. Check your model’s specifications or ask the store to test it.
2. Your package must include 5G. Ask at the counter whether the package you are buying gives 5G access, or only 4G.
3. You must be in a 5G coverage area. 5G rolled out from late 2024 and coverage keeps expanding, so availability varies from street to street and especially outside the big cities.

You can usually see which network type you are on from the symbol in your phone’s status bar (4G, LTE or 5G). If 5G matters to you, test it at the store before you leave, with Wi-Fi switched off.

For most travellers, 4G is enough for navigation, ride-hailing apps, messaging and video calls. 5G helps most when you upload large files or use a hotspot for a laptop. It is a bonus, not a reason to choose one network over another for a holiday.

Is 4G good enough for travel in Vietnam?

For the things travellers actually do on a phone, 4G is normally sufficient. When Viettel launched its 4G network in 2017, it said it had deployed it across rural and mountainous areas from the start rather than only in cities. Even so, signal on any network can weaken in steep valleys, remote villages and inside large buildings. If you plan to ride outside Hanoi, ask locally which network is reliable on your route and download offline maps before leaving the city.

How to choose a data package without a price list

This guide does not list package names or prices. Networks change their prepaid and tourist packages often, and a price table copied from an old article is more likely to mislead you than help. Instead, judge each package on the terms that make a difference to your trip.

1. Estimate your data use from your own phone

Before you travel, open your phone’s mobile data settings and look at how much you used over a typical week at home. Then adjust for the trip: navigation and ride-hailing apps every day, more photos and messages, perhaps less video streaming if you are out all day. Your own figure is a better guide than any generic estimate.

2. Daily allowance or total allowance?

Some packages give a fixed amount of high-speed data per day; others give a total for the whole validity period. A daily allowance suits steady, predictable use. A total allowance suits trips with a few heavy days, for example a day spent uploading photos, followed by quiet ones.

3. What happens after the allowance is used?

Packages described as “unlimited” usually have a high-speed allowance followed by a slower speed. Ask what speed remains and whether you can add data if you need it. Slow data is still enough for messages, but not always for maps loading in a hurry.

4. Validity versus length of stay

Choose a package whose validity covers your whole stay, or know how to renew it. Running out on a mountain road is a poor time to discover that a top-up needs a store visit.

5. Calls, texts and hotspot

Data-only packages are fine for apps, but a local call allowance is useful for calling a rental shop, a hotel or a delivery driver. If a travel partner or a laptop will share your connection, check that hotspot use is allowed.

Package checklist

Tourist package or regular prepaid?

Tourist packages are designed for short stays and are quick to set up. If you are staying for several weeks or months, ask about regular prepaid packages that renew monthly; they may suit longer stays better. Either way, the SIM must be registered to you: under Decree 163/2024/NĐ-CP, a foreign national registers with a passport valid for their stay in Vietnam, or an electronic identification account where permitted. Our guide to buying a SIM at the airport or in city shops covers where to buy and what to check at the counter.

Topping up and renewing

You can usually top up with prepaid cards sold in convenience stores and phone shops, through the network’s own app, or by bank or e-wallet payment. Before your package ends, check how it renews and whether unused data carries over. If you leave Vietnam before the package expires, ask how to stop any automatic renewal so that a later charge does not surprise you.

When mobile data does not work

Most problems have a simple cause. Work through these steps before going back to the store:

1. Restart the phone after inserting the SIM or installing an eSIM.
2. Check mobile data is on, and on a dual-SIM phone, that the Vietnamese line is selected for data.
3. Set network selection to automatic and the preferred network type to the highest your phone offers.
4. Check the package is active and has not run out. A message from the network usually confirms activation.
5. Go back to an official store of the same network with your passport if nothing works. They can check the registration and the package.

If your phone shows signal but pages will not load, the cause is often a data setting or an expired package rather than coverage. If there is no signal at all in one place, try another spot or a different network before assuming the SIM is faulty.

Data and your rental motorbike

A local data connection makes it easier to navigate, share your location with the rental shop and sort out problems on the road. Keep three things in mind:

• Prepare for no signal. Download offline maps before any ride outside the city; our offline maps guide shows how.
• Plan for battery. Navigation with mobile data drains a phone quickly. Our guide to charging your phone on a rental motorbike explains what to check.
• Do not handle the phone while riding. Set the route before you leave and pull over safely to check it.

Frequently asked questions

Does Vietnam have 5G?

Yes. Viettel launched commercial 5G on 15 October 2024, VNPT (VinaPhone) on 20 December 2024, and MobiFone has also commercialised 5G. Whether you get it depends on your phone, your package and your location.

Will my phone work in Vietnam?

A modern smartphone that is unlocked will normally work on Vietnamese 4G. Phones that only support 2G no longer work: networks stopped serving 2G-only devices in October 2024 and began switching 2G off nationwide from 15 September 2026.

Is 4G available everywhere in Vietnam?

4G is the standard mobile data network across the country, but signal varies with terrain and buildings on every network. Ask locally about your route and keep offline maps as a backup.

Which network has the best data package?

There is no permanent answer: packages change, and the best one is the one whose terms fit your stay and whose network works where you will be. Use the checklist above to compare the current offers.

Why does this guide not give prices?

Package names and prices change often, and outdated lists cause confusion at the counter. Ask for the current total price and terms, and compare them on validity, allowance, speed after the allowance and calls.

Can I use a hotspot with a Vietnamese SIM?

Often yes, but it depends on the package. Ask before buying if you will share your connection with a laptop or another phone.

Ask the shop

Thuê xe máy Nguyễn Hà is at Ngõ 5 Nguyễn Văn Cừ, Bồ Đề, Long Biên, Hanoi (near Gia Lam bus station), open 09:00–21:00 daily. When you book, call or message 0334 699 969 (Zalo/WhatsApp) from your local number so the shop can reach you.

Sources checked

• VietNamNet, Viettel officially launches 4G nationwide, 18 April 2017: vietnamnet.vn
• People’s Army Newspaper (VNA), Vietnam accelerates 5G commercialisation: en.qdnd.vn
• VietnamPlus, MobiFone commercialises 5G: vietnamplus.vn
• Hà Tĩnh provincial portal (from VietNamNet), 2G switch-off from 15 September 2026, 13 July 2026: hatinh.gov.vn
• Cần Thơ legal-information portal, documents for registering a mobile subscription under Decree 163/2024/NĐ-CP: pbgdpl.cantho.gov.vn