Check compatibility
Confirm that your phone supports eSIM and is carrier-unlocked before purchasing.
Purchase your plan
Select a plan, enter the correct email address, and complete payment securely through OnePay.
Install the eSIM
Open your phone settings, choose Add eSIM, and scan the QR code from another screen. Install each QR code on one device only.
Connect in Vietnam
Enable the new eSIM for mobile data and turn on data roaming if required by your plan. Keep your primary SIM disabled for data to avoid roaming fees.
Important: Do not delete the eSIM after installation. A deleted eSIM may not be installable again.