Visiting several countries in Europe: what to prepare and how to get online
A first-time Europe checklist, how to check entry rules from official sources, and how to choose a European SIM or eSIM when you cross several countries.
Quick answer
- For a multi-country Europe trip, pick internet that works across borders without swapping SIMs at each one: a multi-country plan. Then check its country list against your actual route instead of trusting the word Europe alone.
- Entry rules, visas and advance travel authorisation systems can change, so check only the official websites of your destination and the EU. For internet, check the live plan pages for current plans and prices.
Start with the route, not the SIM
Before choosing documents or internet, write the list of countries in order and how you will travel between them: flights, trains, buses or a rental car. That list drives your entry conditions, when you need data, and which plan to choose.
If you have never done a long multi-country trip, start with fewer countries than you think you need. Every move between cities costs time and energy and adds a point where something can go wrong.
Documents and entry rules: check official sources
Many European countries share a common travel area, but not all of them, and rules change, including registration or advance authorisation systems that may start in future. This page therefore gives no dates or fees. Check the following with embassies, immigration authorities or the official EU website.
- Whether the countries on your route require a visa or advance authorisation, and whether one covers several countries
- Passport validity conditions for each country
- Documents you may be asked for at the border, such as proof of accommodation, onward travel or funds
- Travel insurance conditions that some countries or visa types may require
A first-time Europe checklist
| When | What to do |
|---|---|
| Before booking | Check entry conditions and passport validity; decide how many countries |
| After booking | Book flexible accommodation where possible; review insurance and card terms |
| A few weeks before | Check plug type and adapters, season-appropriate clothing, and plan reusable outfits |
| Last week | Install the eSIM, download offline maps and bought tickets, back up documents as images |
| Travel day | Check baggage and liquids rules with the airline and airport; carry power banks as per the rules |
Plugs and power banks on planes have their own guides, and because rules change, check your airline and airport websites every time before you fly.
Choosing internet: European SIM, eSIM or roaming
The main problem of a multi-country trip is country-specific SIMs. Buying a SIM at each airport means lost time and several cards to manage. Some SIMs advertised as covering Europe cover only certain countries or have limits when used outside the country of purchase, so read the terms.
| Option | Suits | Check |
|---|---|---|
| Country-specific SIM | Trips based mostly in one country | Whether it works across borders and under what conditions |
| Multi-country eSIM | Frequent border crossings without swapping SIMs | The plan's country list against your route |
| Roaming on your Thai SIM | Short trips with no setup | Terms and charges from your own carrier |
The safe way to compare is to put your route beside each plan's country list and look at live prices on the plan page, not figures in articles. For how much data you need, use our data calculator, and see our Europe plan guide and multi-country data guide.
Money, cards and what to carry
Europe uses more than one currency; some countries use the euro and some do not. Look up each country's currency on your route and check your own bank's fee schedule for conversion and withdrawal charges. Carry more than one card and store them in different places in case one is lost or blocked.
Tourist tax refunds differ by country and shop and can change. Ask the shop and check with that country's tax authority before expecting a refund.
Getting between countries and data at stations
Trains, buses and budget airlines each have their own booking and change conditions. Most tickets live in an app or as a QR code, which needs data or must be downloaded first. Do not leave a ticket inside an email that needs signal to open.
- Save tickets and boarding passes as images or PDFs on the phone
- See whether the stations or airports on your route have Wi-Fi, but do not rely on it alone
- Use offline maps when signal drops in tunnels or the countryside
Safety and emergencies
Keep your passport number, accommodation address and the contact details of the Thai embassy in your destination country on both the phone and paper. Learn what the emergency number is there, and have a plan for what to do if your phone is lost or stolen.
These topics have their own guides on emergency calls and lost phones, linked at the end of this page.
Staying online during the trip
We sell data-only eSIMs. You buy and install on the web, get the QR by email, use no app, and there is no phone number. Your Thai number can still receive calls under your carrier's terms. Check the live plan pages for the list of countries each plan covers.
Frequently asked questions
FAQ
What SIM works for a trip through several European countries?+
There is no single answer. Start with the countries on your route and pick a plan that covers all of them. If you stay mostly in one country, that country's SIM can work; if you cross many borders, a multi-country plan is usually easier.
Do I need a visa for Europe?+
It depends on your destination, length of stay and purpose, and rules change. Check with the embassy or official website before booking, including any advance travel authorisation system.
Is there really one European SIM that works everywhere?+
There are plans covering many countries, but the word Europe does not mean every country. Open each plan's country list and compare it with your route before buying.
How does pocket Wi-Fi compare with an eSIM in Europe?+
Pocket Wi-Fi can be shared among devices but you must collect, return, charge and carry it. An eSIM lives in the phone with nothing extra to carry, but works only on supported phones. Choose by how many devices need data.
What should I download before going to Europe?+
Offline maps of the cities you will visit, tickets and boarding passes as files, a translation app and the transport apps you will actually use. Open each app before you fly to confirm you can log in.
Can I buy an eSIM ahead for a multi-country trip?+
Yes. You usually install it before flying and activate it on arrival. Check on the plan page when the usage period starts and which countries are included.
Can I use my Thai credit card in Europe?+
Usually yes if the card is enabled for overseas use, but fees and terms differ. Check with your bank and carry a second backup card.
Instagram and TikTok have no web share button, so we open your phone's share sheet or copy the link instead.