How to Get Your EU Bank's 2FA Code Outside the EU — PSD2, App Push & SMS for Revolut, N26, Wise, BNP Paribas, Deutsche Bank, ING, Santander & More (2026)

Within the EU/EEA, “Roam Like At Home” means your bank’s text codes and app approvals just work as if you never left. The moment you step outside the EU — a work trip to the US, a winter in Thailand, a few weeks in Dubai — roaming gets expensive and SMS delivery gets flaky. This guide makes sure you can still log in, pay, and move money, bank by bank, without paying to roam.

PSD2, SCA, and why app-based 2FA is travel-proof

EU online banking runs on PSD2 Strong Customer Authentication (SCA): you generally need two of three factors — something you know (a PIN/password), something you have (your phone or banking app), and something you are (a fingerprint or face). In practice the “something you have” factor is usually your banking app approving the login or payment with a push notification, which travels over any internet connection.

That’s the key insight for travel: an app push or app-generated code needs data, not a cellular signal or an SMS. With a travel eSIM (or hotel Wi-Fi) you can approve a login from anywhere outside the EU. Some banks still fall back to SMS one-time codes — for those, keep your home line alive with Wi-Fi Calling on so texts arrive over Wi-Fi. Exact methods vary by bank and can change, so confirm yours on its official security page before you fly.

The foundation is the same dual-SIM setup from our guide to keeping your EU number while abroad: home line on Wi-Fi Calling for any SMS/voice/2FA, travel eSIM for data, roaming off on the home line.

Bank by bank — what to set up before you go

Methods differ by bank and country, but the playbook is the same: prefer the app-based approval, set it up while you’re still inside the EU on Wi-Fi so you can confirm it works, and keep SMS as a backup. The notes below are general — always check your bank’s official security/2FA page for the current setup.

Revolut

Revolut is app-first: logins and card payments are typically approved with an in-app prompt or generated code, which works wherever you have data. Make sure you’re signed in on your travel device before you leave, and keep your recovery options (and a backup of your account email access) handy.

N26

N26 generally confirms logins and payments through its app, so approvals run over data rather than SMS. Confirm the app is installed and verified on the phone you’re travelling with, and check that biometric unlock is enabled so you can approve quickly.

Wise

Wise typically supports app-based verification and also offers SMS or authenticator-app codes depending on your setup. If you rely on SMS today, consider switching to the app or an authenticator method before you travel outside the EU so you don’t depend on a text arriving.

BNP Paribas, Deutsche Bank, ING, Santander, UniCredit and other national banks

Traditional EU banks have largely moved to app-based SCA — a dedicated banking or authentication app that pushes an approval prompt for logins and payments. Some still offer SMS one-time codes as an alternative. Before you go, open your bank’s security settings, enable or confirm the app approval method as primary, and check that your registered mobile number is correct in case SMS is used as a fallback. Specifics vary widely by bank and country, so treat the official page as the source of truth.

Card payments (3-D Secure) while abroad

Online card purchases outside the EU often still trigger an SCA challenge — your bank may push an approval to its app or text a code. The app push is the reliable one when travelling; if your bank only does SMS for 3-D Secure, that’s another reason to keep your home line on Wi-Fi Calling.

The most travel-proof setup: app push and authenticator apps

SMS-over-Wi-Fi-Calling works, but it still depends on having Wi-Fi the moment a code is sent. The most resilient approach is to make every account that allows it use app push approval or an authenticator app. These confirm or generate codes on the device itself over data — no SIM, no signal, no SMS required. You can approve a payment with a single bar of Wi-Fi, or an authenticator code with no connection at all.

• Do it before you fly, on Wi-Fi, so you can recover if setup goes sideways.
• Save backup/recovery codes somewhere offline (a password manager) in case you lose the device.
• Keep SMS as a secondary method on your home number — belt and suspenders.
• Don’t forget non-bank accounts — national tax and eID portals (e.g. Germany’s Elster, France’s FranceConnect) may also need a code; many support an app or eID method, but some still use SMS, so check before you travel.

Before-you-fly banking checklist (travelling outside the EU)

1. For each bank, enable app-based approval / push as the primary 2FA method where it’s offered.
2. Confirm the registered mobile number on every account is your home number, in case SMS is used as a fallback.
3. Turn on Wi-Fi Calling for that line (where your operator supports it) and test it on Wi-Fi-only — Airplane Mode + Wi-Fi, then request a code.
4. Switch any SMS-only logins (banking, tax, eID) to an authenticator app or app push where possible.
5. Save authenticator/recovery codes offline.
6. Don’t cancel your home line — keep the cheapest plan that retains the number.
7. Install a travel eSIM for data; roaming off on the home line, on for the eSIM.

FAQ

How do I approve my EU bank login when I’m travelling outside the EU?

Most EU banks now use app-based 2FA under PSD2 Strong Customer Authentication — an in-app push approval or a generated code on your phone. This works over any data connection (your travel eSIM or Wi-Fi) and needs no cellular signal or SMS, which makes it the most travel-proof method outside the EU. For banks that still send SMS one-time codes, keep your home line active with Wi-Fi Calling on so those texts still arrive over Wi-Fi.

What is PSD2 Strong Customer Authentication and why does it matter abroad?

PSD2 is the EU rule that requires Strong Customer Authentication (SCA) for online banking and most card payments — typically two of: something you know (PIN), something you have (your phone/app), and something you are (biometrics). Because the “something you have” factor is usually your banking app approving over data, you can authenticate from anywhere with an internet connection, which is exactly what you want when you’re outside the EU and roaming is expensive.

My bank only sends SMS codes — how do I receive them outside the EU?

Keep your home mobile line active and turn on Wi-Fi Calling (where your operator supports it). With Wi-Fi Calling on, SMS one-time codes deliver to your number over Wi-Fi, treated as domestic, with no roaming charge. Stay connected to Wi-Fi when you request a code, and ask for a resend if one is delayed. Better still, ask your bank whether it offers an app-based or push method you can switch to.

Should I cancel my EU SIM to save money while travelling outside the EU?

Be careful — if any account still texts codes to that number (some banks, plus national tax or eID portals), cancelling can lock you out and be painful to fix remotely. Instead of cancelling, keep the cheapest plan that retains your number, leave Wi-Fi Calling on as an SMS fallback, switch banking to app-based 2FA where possible, and use a travel eSIM for data outside the EU.

Bottom line

Outside the EU, your banking app is your best friend: PSD2 push approval runs over data, so a travel eSIM is all you need to log in and pay. Switch every account you can to app-based 2FA, keep your home number alive on the cheapest plan with Wi-Fi Calling as an SMS fallback, and let a travel eSIM handle data. See the full guide to keeping your EU number while abroad, then pick your data plan by destination — whether that’s the USA, Japan, Thailand, or Dubai.