Data roaming and a Philippines eSIM: which switch goes where
- Off at home
- On for the eSIM only if needed
- Prepaid: no extra charges
The short answer
Your home line keeps data roaming off, so no charge from your carrier can follow. For the eSIM line, the store asks for that switch only when nothing connects. Its plans are prepaid and never auto-renew, so the switch cannot add a charge on the eSIM.
Checked October 2, 2026
Why it can matter
A line counts as roaming when it sits on a network other than its own home network. The answer depends on your plan, and every plan states its network before payment. The store’s rule stays short: when the eSIM line will not connect, that line gets data roaming switched on.
Where the switches are
The iPhone path: Settings, Cellular (or Mobile Service), pick the line, then Data Roaming. The Android path: the SIM settings, pick the line, then Roaming. Run the same check on your home line, where it stays off.
If it fails (Data roaming)
When signal shows but data does not, confirm the eSIM line carries mobile data, then switch data roaming on for it. Then follow not connecting.
Questions
Does my home line need data roaming switched on?
It does not. Leaving it off keeps roaming charges from your carrier away. Calls and texts still reach your own number.
In which case does the eSIM line need data roaming on?
Only when the rest of the checks end with no connection. For a line that will not start, the store asks for that switch.
More help
Install your Philippines eSIM at home, before you fly
Scan the QR code at home on Wi-Fi, keep the eSIM line switched off, and never delete it once added. How to install a Philippines eSIM before the flight.
Switch your Philippines eSIM on when you land
Land, then switch the eSIM line on and give it mobile data; data roaming comes on only if nothing connects. Each switch, in the order it happens.
Philippines eSIM not connecting: the checks, in order
No signal or no data on your Philippines eSIM? Check the line, mobile data and data roaming, restart, pick a network by hand, then write to support.
Philippines eSIM refunds: when you get your money back
When the eSIM does not work, or never arrives, the refund is full. A working eSIM does not qualify. How to ask, and where the money lands.
Will my phone take an eSIM? Find out before buying
Dial *#06#: if your phone shows an EID, it has an eSIM. It must also be unlocked. Check your model below before you buy a Philippines 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