Normally, with physical SIM cards, you would have to order them 2-3 days in advance if you are still in your home country, and 4-5 days if you are abroad to have the SIM card shipped to your address.

But everything has completely changed with eSIM. You can purchase an eSIM at any time, even if you are already abroad or in any province in Vietnam, you don't need to waste your time waiting. You just need to order and pay online. After that, you will receive a QR code to activate the eSIM immediately upon successful order placement, which is extremely fast and convenient.

Typically, travelers using travel eSIM will install the eSIM on their mobile device before departure. Then, when they arrive at their destination, the eSIM will automatically activate and connect to the best data network at the travel destination. 

Keep in mind that you will need to switch “Data Roaming” to [ON] so that you can access the Internet.

eSIM ONE helps you save time, be proactive, with simple and convenient installation. 

eSIM ONE - One touch to the world

How to install eSIM: https://esimone.com/check-device

Check Compatibility: https://esimone.com/check-device