When crossing borders in a motorhome, having internet on your phone stops being as simple as it is at home. You need data for the map, to find aires, for remote work or to talk to family, and it's worth knowing how connectivity works in each country so you don't get a nasty bill surprise. Let's clear it up.
Roaming within the EU
The good news for travelling around the European Union: the "roam like at home" principle applies, letting you use your home tariff (data, calls) in other EU countries with no surcharge, within fair-use limits. For a normal trip around Europe, your usual tariff is usually enough. [Note: check the conditions and limits of your specific tariff.]
Careful outside the EU
"Roam like at home" does not apply outside the EU: in countries such as Switzerland, the UK, the non-EU Balkans or Morocco, roaming can be extremely expensive. Before crossing into one of these countries, check your operator's rates, and if in doubt, disable data roaming to avoid a huge bill.
The convenient solution: eSIMs
For cheap, plentiful data in any country (inside or outside the EU), travel eSIMs are today's go-to option: you buy a data package for the country or region and activate it on your phone with no physical card, in minutes. Ideal for long trips or trips outside the EU, and for not depending on your main tariff. If you need a lot of connectivity (remote work), consider a router with an eSIM (see internet and WiFi).
Tips to avoid nasty surprises
- Check your tariff before setting off: how much roaming data it includes within the EU and what happens outside it.
- Outside the EU, disable data roaming or use a local eSIM.
- Turn on usage alerts so you don't go over.
- Download offline maps so you don't depend on data for navigation.
In summary
Within the EU, your home tariff works while roaming with no surcharge (within limits); outside the EU, roaming can be extremely expensive, so a travel eSIM is the better bet. The step to take today: before crossing into a country outside the EU, check your operator's roaming rates and consider a local eSIM; that's what avoids an unpleasant bill when you get home. More at internet and WiFi.