The trip home at Christmas is a different animal from a two-week holiday. It's longer, it's full of people who want to see your face on a video call, and it's usually the one where your phone has to be two things at once: a working internet connection in Bogotá, Lima or Quito, and the number your bank back in Europe sends its confirmation codes to.
Why this particular trip gets expensive
Europe's "roam like at home" rules stop at the edge of the EU and the EEA. Colombia, Peru and Ecuador sit well outside that perimeter, and in most European operators' price lists they land in the furthest, priciest zone — the one still quoted per megabyte rather than per gigabyte. Nobody feels like they're spending money while a photo backs itself up in the background, which is exactly why those bills arrive.
Then there's the length. A Christmas trip home is rarely four days; three or four weeks is normal. A daily roaming bundle that looks tolerable for a weekend is charged again every single day you use the line, and the allowance resets with it.
Your phone has two jobs, so give it two lines
Almost every phone sold in the last few years can run a physical SIM and an eSIM side by side, and that is the whole answer here. One line does the internet; the other does nothing but exist and receive.
| Line | What it's for | Data roaming |
|---|---|---|
| Your travel eSIM | All mobile data: maps, WhatsApp, video calls, boarding passes | On — it's the only way that line reaches a network, and the plan is already paid for |
| Your usual number | Bank codes, instant-payment confirmations, calls from the airline or from work | Off — this is the switch that stops your home operator billing foreign data |
Your VamosData eSIM is a data-only plan: it has no phone number of its own and never touches your texts, which is precisely why the arrangement works. Your own number stays in the phone, registers on a local network, and keeps behaving like your number.
Two settings do the real work:
- Point mobile data at the travel line. iOS: Settings → Mobile Data → Mobile Data → pick your travel eSIM. Android: Settings → Network & internet → SIMs → mobile data SIM.
- Turn off automatic switching. On iPhone it's "Allow Mobile Data Switching"; Android has an equivalent. Leave it on and the phone can quietly hand data back to your home line when the other signal dips — the roaming bill you were avoiding, arriving by the back door. There's more on both toggles in turning on data roaming.
Bank codes: the part worth testing before you fly
Keeping your number alive is necessary but not always sufficient, and it's honest to say so. Some banks won't send one-time codes to a number that's roaming. Some of the short numbers those codes come from don't deliver internationally at all. Rules differ by bank, and none of this is advice about your specific account.
Three things to do while you're still at home:
- Switch your bank to app-based confirmation if it offers it. A push notification arrives over the internet, so it comes in over your travel data — no SMS involved. For many European banks this is already the default.
- Turn on Wi-Fi calling on your home line. Where your operator supports it abroad, calls and texts can reach you over your family's Wi-Fi.
- Log into the apps you'll need — bank, airline, email — before you leave, so you're not re-verifying an account from a sofa in Cuenca.
One country or the whole trip?
If you land and stay — three weeks between Medellín and the coast — a VamosData country plan for Colombia, Peru or Ecuador is the straightforward choice. If the trip is a loop, with a week in Quito and New Year in Lima, check the country list on the South America bundle and compare it against buying two country plans; both options are on destinations, with current prices and data allowances.
Either way, mobile networks in all three countries are strongest in the cities and thinner once you're into the Andes, the Amazon or a small village an hour off the main road — the same pattern as anywhere mountainous. Download your offline maps on Wi-Fi before the bus leaves.
The pre-flight list
- Check on the device checker that your phone supports a second line.
- Buy and install your VamosData eSIM at home, over Wi-Fi — the iOS and Android guides take a couple of minutes.
- Leave your home line's data roaming off, and confirm with your operator that calls and texts still work in the country you're flying to.
- Land, switch the travel line on, set it as your data line, and leave everything else alone.
Done properly, the whole thing is invisible: the family group chat works, the video call to the cousin who couldn't travel works, and when your bank asks you to confirm a payment, the code lands on the number it has always landed on.