Stay Connected in Vietnam: Your Guide to Local SIMs, eSIMs, and Global Data Options

Local SIM Cards

Purchasing a local SIM card upon arrival is a popular choice among travelers. Vietnam has three main mobile network operators: Viettel, Vinaphone, and Mobifone. Viettel is often recommended due to its extensive 4G/5G coverage and affordable data packages. For instance, a Viettel SIM card can cost around 70.000VND ($3 USD), with data packages offering 7 GB for one week at approximately 30.000VND ($1 USD), or 60 GB for one month at about 120.000VND ($5 USD) (rate of Feb 2025).

These SIM cards are widely available at official stores, kiosks in major cities, and airports. Ensure your device is unlocked and compatible with local networks before purchasing.

Tip : Avoid airport upselling—stick to official counters for fair rates.

eSIM Options

For travelers with eSIM-compatible devices, digital SIMs offer a convenient alternative. Services like Airalo, Nomad, and Holafly allow you to purchase and activate a data plan before your departure, ensuring immediate connectivity upon arrival. Airalo, for example, offers plans starting from $4.50 USD, utilizing local networks like Viettel to provide reliable coverage.

Holafly is known for its unlimited data plans, which can be advantageous for heavy data users.

These eSIMs are typically data-only, so if you require voice services, a local physical SIM might be more suitable.

Global SIM Cards

If you're traveling to multiple countries, a global SIM card might be the best option. Providers like OneSimCard and WorldSIM offer SIMs that work in numerous countries, including Vietnam. OneSimCard, for instance, provides coverage in over 200 countries, allowing travelers to avoid the hassle of purchasing new SIM cards in each destination.

While convenient, these cards may come at a higher cost compared to local options and might offer less competitive data packages.

• Device Compatibility : Ensure your device is unlocked and supports the SIM type you choose. Most modern smartphones support eSIM technology, but it's advisable to verify your device's specifications before opting for a digital SIM.

• Data Needs : Assess your internet usage to select a plan that offers sufficient data. For instance, if you plan to stream videos or use data-intensive applications, consider plans with higher data allowances or unlimited data options.

• Activation Process : Some SIMs require activation upon purchase, while eSIMs can often be set up in advance. Setting up an eSIM before your trip can provide immediate connectivity upon arrival, eliminating the need to find a local SIM vendor.