Cross-border traveler guide to stay connected and safe

After several days of hiking, few things are as pleasant as arriving in a village on the other side of the mountains. You sit down, load up your phone, and they welcome you warmly. They help you confirm your accommodation for the next day, charge your deposit, and send messages to your loved ones. But your phone still has other plans.

Traffic between Spain, France and, on some routes, Andorra can involve crossing different networks, using roaming, and traveling over long distances with little or no signal. A short digital plan before departure can avoid most of these inconveniences.

Plan your connection before you start walking.

For travelers traveling from Spain to France, EU roaming regulations generally allow a mobile phone user with an «eligible» plan to use their home country’s data and calls when roaming in other EU countries, subject to a fair usage policy. Cross-border trips will be much easier, but it’s still advisable to check with your current provider about the conditions before traveling abroad. For useful information on how mobile roaming works between networks, see GSMA explanation about mobile roaming It provides a useful general technical description.

Andorra is independent. Since it is not part of the European Union (EU), the EU roaming regulations do not automatically apply. Please log in to access this feature or consult your mobile phone operator as fees may apply.

Before leaving, check your provider’s roaming policy and consider whether you want a local eSIM or a local SIM. I find the most attractive eSIM if your device is compatible, as you can plan your data usage without needing to change SIMs. Since this site already has a page that covers the essentials of traveling without roaming with an eSIM, use that information instead of trying to cover all the points here. If you’re considering an eSIM, our guide to Traveling without roaming with an eSIM on a hiking trip. It explains the practical setup and what to check before departure.

Whatever your decision, be sure to test the setup before the first day. A data plan that works perfectly in your living room won’t do you much good if you have setup problems 2500 meters away.

Make sure your money continues to yield returns.

Do not let this be the moment you discover that your bank prefers to send an authentication code to a phone number that no longer has an associated landline or mobile phone number.

Inform your bank or card issuer about your travel itinerary and make sure they have your updated contact information, as instructed. Bring a spare card in addition to the main one and some cash for the towns and small shops.

It is also worth considering how two-factor authentication works at your bank. Verifying your identity via SMS can cause delays when using roamability or changing plans. If your bank offers this solution, it is more reliable than sending text messages.

Log in to your banking, booking and travel apps before traveling and note down the passwords if necessary. Use a password-protected account that works without an internet connection.

Prepare to be disconnected.

Mountain trails usually remind you that it’s unlikely that you have mobile coverage.

Download all offline maps for the entire route and do the same with your GPX file. For a more detailed approach on how to prepare reservations, GPX routes, and essential documentation, check out our guide Documentation for a multi-day excursion in the Pyrenees. Do it in a place with good Wi-Fi connection and then open all the downloads once to check that they are available offline. Keep all important booking confirmations, transport information and other documentation in an easily accessible place without internet connection.

You can use your current guide to organize documents to prepare yourself for this stage.

Another good idea is to establish a basic registration procedure with someone at home, for example, a quick text message alerting them that you have arrived in the town or hostel. That way, no one will have any reason to worry if you run out of coverage for a day or two.

Be careful with shared Wi-Fi networks.

The wifi you use after a hard day. Think about it. Maybe the cafes, hostels, shelters, and pubs in the villages offer internet access, but it’s unlikely that you know how a public system is configured or who else might be connected.

The biggest danger lies in the fact that not all public networks are equally dangerous. Tired travelers tend to carry out their most important online transactions while connected to a network: accessing bank accounts, making reservations, responding to emails, or registering for some essential service.

Start with the simple. Ask staff for the correct name of the Wi-Fi network instead of connecting to an unknown one that appears suddenly. Avoid performing banking transactions and other personal operations on unsecured networks whenever possible. Update all devices and applications, and use unique passwords and two-factor authentication if available.

A VPN can be an optional layer of security when you use public Wi-Fi. Encrypt your connection to the VPN service, which makes it much more difficult for someone on your network to analyze your traffic. TIP: Hikers should Test CyberGhost VPN in their own teams and networks before leaving.

Remember what you can’t do: you can’t expand mobile coverage, protect yourself from phishing, fix a weak password, or locate a lost phone. It’s just another tool in a list of security measures, not a shortcut to a poor internet experience.

Digital checklist before the excursion

Keep this list along with the other preparations for your trip:

• Check the roaming conditions in Spain and France.
• Check if your provider offers a different offer for Andorra.
• Request a local SIM card or an eSIM if necessary.
• Check the mobile coverage before leaving.
• If necessary, inform your bank before traveling.
• He carries a spare card and some cash.
• Implement application-based authentication whenever possible.
• Everyone should download offline maps and GPX routes to get, first, storage space; second, plan their itineraries using an app like ViewRanger.
• Store your reservations and documents so you can access them offline.
• Make sure that someone at home knows that you plan to communicate with them.
• Don't forget to select the correct Wi-Fi network.
• Whenever possible, avoid conducting confidential transactions over an open network.
• Keep devices and applications up to date for all installed applications.
• Use secure and unique passwords, and two-factor authentication for added protection.
• A VPN could be an additional layer of protection on a shared network.

The key to a good hike lies in what you do during the walk: a little preparation beforehand will make the time fly by. Make sure you have access to the internet, cash, personal information, and basic safety measures before you set off, and you’ll save time if mountains are your sole reason for going.