Traveling to Vietnam means immersing yourself in a country where age-old traditions and contemporary energy coexist at every corner. Between terraced rice paddies, spectacular mountains, vibrant metropolises and peaceful villages along the Mekong, adventure awaits you at every moment. To make the most of it and travel with peace of mind, staying connected often proves invaluable: keeping in touch with loved ones, sharing your discoveries, checking a map, booking transport or simply staying informed in real time. In this country brimming with energy, connectivity is part of daily life, and travelers today have multiple simple and practical ways to stay online and make calls throughout their stay.

Network Quality and Internet Access

Vietnam boasts modern telecommunications infrastructure, highly efficient in major cities such as Hanoi, Ho Chi Minh City, Da Nang and Hue, where 4G is excellent for browsing, booking, using messaging services or GPS.

In rural, mountainous or isolated areas (notably around Ha Giang, in the northern rice fields, the Mekong Delta or certain islands), connectivity can be weaker and may experience temporary outages. 5G is beginning to be rolled out in major cities, but its expansion remains gradual.

European mobile plans generally do not include internet in Vietnam: roaming incurs high costs, even with an international option. It is therefore essential to disable mobile data to avoid charges and to prioritize a local SIM card or local Wi-Fi, which is reliable and widely available.

SIM Cards in Vietnam

Buying a local SIM card is the simplest and most economical solution to stay connected in Vietnam, particularly for using Google Maps, booking a taxi, contacting your contacts or communicating with loved ones.

The three main operators are Viettel, Vinaphone and Mobifone (with Vietnamobile as an alternative). Viettel offers the best coverage, especially in rural areas, followed by Vinaphone, while Mobifone can be less reliable outside cities. All offer prepaid SIM cards with data, calls and messages, as well as tourist plans for 7, 15 or 30 days (averaging 2 GB per day with reduced speed thereafter).

You can purchase a SIM:

• At the airport upon your arrival in Vietnam, where activation is immediate
• At an official shop (Viettel, Vinaphone, Mobifone)
• On the street
• At convenience stores like FamilyMart.

For purchase, you must present your passport and have an unlocked phone. Note that it is possible to have a maximum of three active SIM cards in your name. Tourist SIM cards "SIM Tourists" are offered at the airport: simpler but slightly more expensive and often without SMS.

eSIM in Vietnam

An eSIM is a virtual SIM card integrated into your phone, activatable remotely via a QR code, without a physical card. It allows you to connect upon arrival in Vietnam while keeping your primary SIM, making it an ideal solution for frequent travelers or those who want to save time. It is compatible only with recent devices (for example iPhone XS/XR/SE and later models, recent iPads, Samsung Galaxy S20+, Google Pixel 3+) and requires an unlocked smartphone.

You can purchase an eSIM before your departure on platforms such as Holafly, Airalo, Nomad or SimOptions, or through Vietnamese operators Viettel, Vinaphone and Mobifone. After payment, a QR code allows you to install the profile, then activate the line upon arrival.

eSIM is convenient, fast and secure, with no risk of loss, no waiting in line, no delivery delays, and the ability to be stored on multiple devices. Multiple plans can be activated on it. However, it is more expensive than a physical SIM card, with fewer plan options, activation requiring an Internet connection, and incompatibility with certain phones. To avoid charges outside your plan, you must disable data on your primary SIM. Finally, in rural areas, you may prefer an eSIM using the Viettel network for optimal coverage.

International Roaming in Vietnam

Roaming allows you to use your home mobile plan directly in Vietnam by connecting to local networks, without buying a SIM card or eSIM. This solution offers the advantage of keeping your number and remaining easily reachable.

However, roaming generally proves very costly for a stay in the country: unless you have an advantageous international plan or use your phone very sparingly, roaming charges can quickly become prohibitive and result in significant overage fees. To avoid a high bill, it is far more cost-effective and practical to choose a local SIM card or eSIM during your trip.

Wi-Fi in Vietnam

Wi-Fi is very widely available in Vietnam and you will be able to stay connected without difficulty in the majority of hotels, cafés, restaurants, shopping centers, buses, airports and coworking spaces, particularly in Ho Chi Minh City and Hanoi. Even budget accommodations generally offer good connection, and some provide computers with free Internet access, sometimes even without Wi-Fi. Systems are often configured in English and access to English-language websites is usually possible.

Public hotspots also exist in certain rural villages, but in very remote areas, such as certain national parks, Wi-Fi is not guaranteed and may be unstable. In these cases, Wi-Fi remains a backup solution: its speed and availability can vary, and it is recommended to have a local SIM card to ensure reliable connection during your travels.

Pocket Wi-Fi in Vietnam

Pocket Wi-Fi, also called a portable Wi-Fi router, is a small device you can rent to have a personal and secure Internet network during your stay in Vietnam. It connects to local mobile networks and allows you to share the connection with 5 or 10 devices simultaneously, ideal for group travelers, families or professionals with multiple devices (phones, tablets, computers). This service can be reserved online before your departure to arrive connected upon landing, or rented directly at the airport.

Pocket Wi-Fi also allows you to keep your primary SIM card and your usual phone settings. However, it is more expensive than a local SIM card and requires carrying an additional device, ensuring it stays charged to avoid any connection interruption. Despite this, Pocket Wi-Fi remains a convenient option for those who want reliable and shared connectivity throughout Vietnam.

Practical Tips

Before you leave, remember to check your phone's compatibility with Vietnamese networks and unlock your device if it is tied to a specific operator. Once there, keep a copy of your passport in case you need to register your SIM card.

For your digital security, consider using a VPN when connecting to public networks. Also download offline maps if you plan to visit poorly covered regions, and back up your important documents in an application accessible without connection.