Data roaming on your Indonesia eSIM: when you need it
- Only if it will not start
- On for the eSIM line
- Off at home
The short answer
The eSIM runs on an Indonesian network, one of Telkomsel, XL Axiata or Indosat, so the data roaming switch is normally not needed: leave it off. If the eSIM line does not connect, turn data roaming on for the eSIM line and try again; that is the store's guidance. Keep data roaming off on your home line, so it cannot run up charges.
Checked October 3, 2026
When to switch it on
The eSIM connects to an Indonesian network, one of Telkomsel, XL Axiata or Indosat. If the line comes up and data flows, there is nothing to switch. If the line does not connect, turn on data roaming for the eSIM line and try again: the store names that switch as the fix for a line that does not start.
Where the switches are
On an iPhone: Settings, Cellular (or Mobile service), tap the eSIM line, then Data Roaming. On Android: the SIM settings, the eSIM, then Roaming. Do the same on your home line, and switch it off there.
If it fails (Data roaming)
If the eSIM shows signal but no data, check that the eSIM line is chosen for mobile data, that switching mobile data between lines is off, and that data roaming is on for it. Then follow not connecting, in order.
Questions
Should data roaming be on all the time?
No. Leave it off on the eSIM line, and turn it on only if the line does not connect after landing. Keep it off on your home line.
Where is the switch on my phone?
On an iPhone: Settings, Cellular (or Mobile service), tap the eSIM line, then Data Roaming. On Android: the SIM settings, the eSIM, then Roaming.
What if the switch does not help?
Work through [not connecting](/en/help/not-connecting), in order. If nothing works, write to the store's support while you are still in Indonesia.
More help
Install your Indonesia eSIM at home, before you fly
Scan the QR code from your order page at home on Wi-Fi, within 30 days of buying, and keep the line off until you land. How to install an Indonesia eSIM.
Switch your Indonesia eSIM on when you land
After landing in Indonesia, switch the eSIM line on and choose it for mobile data. If data does not start, turn on data roaming for that line only.
Indonesia eSIM not connecting: the checks, in order
Is your eSIM not working in Indonesia? Check the line, mobile data and airplane mode, then data roaming, pick a network by hand, and write to support.
Indonesia eSIM refunds: when you get your money back
A full refund if the eSIM does not work and cannot be fixed. A working eSIM is not refunded. How to ask, and where the money goes.
Is my phone eSIM compatible? 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 an Indonesia 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