Install your Singapore eSIM at home, before you fly
- At home, on Wi-Fi
- Within 30 days
- Keep the line off
The short answer
The setup happens at home over Wi-Fi, before the flight, no later than 30 days after buying. From the order page, scan the QR code, give the line a name, and leave it off till you land. Keep the eSIM in place once it is added: a QR code normally installs just once.
Checked October 2, 2026
Before you scan
Your phone must support eSIM and be unlocked; the phone check on this site tells you how to find out. Start on Wi-Fi: the eSIM arrives as a download, so pick a place where the connection holds, ideally your home.
Scan the QR code
Open the order page on any other screen, or send the code to a printer. Once payment goes through, the code is shown on screen and held on that page; keep the link safe. On iPhone, the route is Settings, Cellular, Add eSIM, then scan. On Android, add the eSIM through the SIM settings: Samsung puts them under Connections, SIM manager; Pixel under Network & internet, SIMs. Should the camera miss the code, type the details in by hand, taken from the order page.
After it is added
Give the line a name you will recognise, such as Singapore. Leave the line off until you land, and leave the eSIM in place: usually the QR code installs once, no more. On landing, follow switch it on after landing.
If it fails (Install the eSIM)
A code that will not scan, or an install that stops partway: stay on Wi-Fi and give it another attempt. When it still will not go through, put the order page link and your phone model in a note to the store’s support before retrying.
Questions
How to install eSIM on Android?
In the SIM settings, add an eSIM and scan the code from your order page: Samsung lists it under Connections, SIM manager; Pixel under Network & internet, SIMs. A camera that will not scan can be bypassed by typing the details in by hand.
More help
Switch your Singapore eSIM on when you land
After landing in Singapore, switch the eSIM line on and choose it for mobile data. If data does not start, turn on data roaming for that line only.
Data roaming on a Singapore eSIM: when you need it
The eSIM runs on a Singapore network, and the store says switch data roaming on for the eSIM line only when it does not connect. Where the switch is.
Singapore eSIM not connecting: the checks, in order
Is your eSIM not working in Singapore? Check the line, mobile data and airplane mode, then data roaming, pick the network by hand, and write to support.
Singapore eSIM refunds: when you get your money back
A full refund where the eSIM does not work and no fix is possible. A working eSIM is not refunded. How to ask, and where the money goes.
Does your phone support eSIM? Check before you buy
Dial *#06#: if your phone shows an EID, it has an eSIM. It must also be unlocked. Check your model before you buy a Singapore eSIM.
Still stuck?
Orders, QR codes and refunds are handled by VietSIM support. Write with the link to your order page and your phone model.
contact@vietsim.com