What is Data Roaming?

Data Roaming, also known as roaming data, refers to the process of using mobile data services outside your home network’s coverage area. Each mobile carrier has its own coverage range, but none can provide coverage in every country worldwide. Therefore, when your device is outside the coverage area of your current carrier, you need to enable data roaming to connect with compatible carriers in the country you are visiting.

Data Roaming means switching from your current mobile network to another carrier, allowing your mobile phone to access the internet when you are outside your own network’s coverage area. This way, your device can connect to another carrier to access the internet.

Types of Data Roaming

Data roaming is divided into two types: domestic roaming and international roaming.

Domestic Data Roaming

Domestic data roaming refers to switching from your current carrier to another carrier within the same country in order to make calls, send messages, or use the internet in areas where your carrier does not have coverage.

International Data Roaming

When people mention data roaming, they usually think of international data roaming. This term is familiar to those who frequently travel abroad. International data roaming means switching from your current carrier to another carrier in a foreign country where your carrier does not have coverage, so you can make calls, send messages, and use the internet.

You can only use international data roaming in countries where your mobile service provider has a roaming agreement with the local carrier. However, international roaming charges are much higher than using these services in Vietnam.

Therefore, you need to clearly understand how data roaming works and how to use it appropriately and carefully to avoid incurring huge fees when using this service abroad.

Should You Use Data Roaming?

If you are traveling or working abroad and need to use mobile data continuously to access the internet and stay in touch with friends and family, you can enable Data Roaming. However, if it is not absolutely necessary, you should turn off this feature because international data roaming fees are extremely expensive.

You should check the data roaming rates provided by your carrier and carefully consider your needs before deciding whether to enable data roaming.

Currently, there is a much more cost-effective solution for those traveling or working abroad: the travel eSIM. This is a digital SIM card that can be activated via a QR code, offering much more affordable rates compared to data roaming. You can learn more about what an eSIM is here.

Guide to Buying a Reliable Travel eSIM and Introduction to Leading Providers

If you are planning to travel or work abroad, choosing a reputable eSIM provider is essential to ensure a stable internet connection, save costs, and enjoy convenience throughout your journey. Here are some recommendations for trustworthy travel eSIM providers you should consider, such as eSIMONE, eSIM Global, eSIMdulich, Airalo, Holafly, Get Nomad, Sally,... and other providers that we will continue to update at top.bestesimtravel.com.