The best travel hacks are not secret tricks. They are small habits and tools that stop you paying for things you do not need: roaming bills, card fees, missed connections, lost documents. Set them up once and every trip gets cheaper and calmer.
Affiliate disclosure: some links below are affiliate links. If you buy through them, Mondosol may earn a small commission at no extra cost to you. We only mention tools we think are useful, and there are always free alternatives.
In this article
Phone and data without roaming shocks

- Check your plan first. If you have an EU/EEA mobile plan, roaming in other EU/EEA countries is often included. Outside it, roaming can be very expensive.
- Use an eSIM for data. An eSIM is a digital SIM you install by scanning a QR code. You can buy a data plan for your destination before you leave, for example from Airalo, and keep your normal number for calls and texts.
- Check that your phone supports eSIM and is unlocked. Most recent iPhones and many Android phones do.
- Download offline maps of the cities you visit, so you can navigate without data.
Money: cards, cash and fees
- Bring two cards from different banks, and keep them in different places.
- Pay in the local currency. When a card machine or ATM offers to charge you in your home currency, say no. The exchange rate is usually worse.
- Avoid airport exchange desks. Withdraw a little cash from a bank ATM instead and check the fees.
- Turn on spending alerts in your bank app, so you notice any strange payment at once.
Booking hacks
- Compare, then book. Use a comparison site such as Trip.com or a flight search to see prices across dates, then check the airline’s own site too.
- Book flexible when plans may change. A free-cancellation room can be worth a few euros more.
- Mix your stays. A hostel or guesthouse for a few nights, then an apartment with a kitchen for longer stays.
- Travel in shoulder season for lower prices and fewer queues.

Documents, insurance and safety
- Save digital copies of your passport, ID, insurance and bookings in a secure cloud folder.
- Get travel insurance that fits the trip. Check medical cover, cancellation, luggage and activities like skiing. Long stays may need special long-stay or nomad insurance. EU citizens should also carry the European Health Insurance Card (EHIC).
- Share your plan with someone at home.
- Save local emergency numbers. 112 works across the EU and in many other countries.
Apps worth installing
| Need | What to look for |
|---|---|
| Maps | Offline maps and public transport directions |
| Transport | The local transport or train app for tickets and delays |
| Language | A translator with camera and offline mode, plus a few phrases from a language course |
| Money | Your bank app with alerts and a currency converter |
| Documents | A secure cloud folder for copies and tickets |
The 10-minute pre-trip checklist
- Phone: roaming checked, or eSIM installed.
- Offline maps downloaded.
- Two payment cards packed separately.
- Bank alerts on.
- Copies of passport and insurance saved.
- Travel insurance and EHIC (if EU) ready.
- First night and airport transfer booked.
- Five local phrases learned: hello, please, thank you, excuse me, how much?
Watch: how eSIMs work
Video: “How to use eSIM while traveling with your iPhone” by Apple Support, on YouTube.
Video: “How to Use an eSim for International Travel (for Beginners)” by Danny Packs, on YouTube.
FAQ
What is the cheapest way to use my phone abroad?
If roaming is included in your plan (common within the EU/EEA), use that. Otherwise a data eSIM or a local SIM is usually much cheaper than roaming. Use wifi for big downloads.
Is an eSIM better than a local SIM card?
An eSIM is faster to set up and you keep your normal SIM in the phone. A local SIM can be cheaper for long stays and gives you a local number. Both work.
Should I pay in euros or in my home currency?
Usually in the local currency. If the card machine converts for you, the rate is often worse.
Do I really need travel insurance?
A medical emergency or cancelled trip can cost far more than a policy. Read what is covered and what is not before you buy.
How do I avoid looking like a tourist?
Learn a few local phrases, follow local meal times and walk confidently with your map downloaded. People appreciate the effort.
Keep learning
- Save more: 15 budget travel tips that really save money.
- City guides: Barcelona on a budget and Greece on a budget.
- Speak a little: free courses in Italian, Spanish, French and Norwegian.
Prices, roaming rules and insurance terms change. Check the current conditions with your provider before you travel.





