Your phone abroad: data, maps and power without the bill
An eSIM before you fly, the maps you need saved on the plane, and the three settings that stop a roaming surprise.
A phone that works from the moment you land makes the first hour of a trip easy: the taxi app, the map to the hotel, the message home. A phone that does not is how people pay a fortune for a day of roaming. Three things to sort before the flight.
Data: an eSIM, bought before you go
If your phone supports eSIM (most made since 2020 do), buy a data plan for the country or region before you leave and install it at home over Wi-Fi. It switches on when you land. The price is usually a few pounds or dollars per gigabyte, far below roaming. Check your own operator too: some include roaming in the plan, and a few charge a flat daily rate that is fine for a short trip.
The three settings
Before take-off:
- Turn off data roaming for your home SIM.
- Turn off automatic downloads and app updates over mobile data.
- Turn on low-data mode, then turn on the travel eSIM alone.
That combination is what stops the surprise bill.
Maps that work without signal
Save the city for offline use in your maps app while you are still on Wi-Fi: the tiles, the transit lines and search all keep working underground and in the countryside. Your Travlyo trip is saved for offline use too when Offline mode is on: every day, the bookings, the money and the map, so the plan is there on the plane and in the metro.
Power and the numbers you will want
One universal adapter, one cable per device and a small power bank, kept in your hand luggage, never in a checked bag. Save the hotel's number and address, your airline's local number and the emergency number for the country (112 across Europe, 911 in the US and Canada); the guide's "Know before you go" card has it. Turn on photo backup over Wi-Fi only: a lost phone then costs you a phone, not the trip's pictures.
Do it in Travlyo
Pick a city, and the days, the bookings, the money and the packing list are one plan — free to start.
Start planning, it’s freeRead next
- It's raining. What now?Swap the order of the day, not the day. Museums and markets in the wet hours, the walk when it clears, and the three things worth doing only in the rain. A plan B you can make in two minutes.
- Too hot to sightsee. What now?Early, late and in the shade, with the middle of the day given to lunch, a siesta or a museum with air conditioning. How to see a city in a heatwave without hating it.