You land, your phone buzzes with a welcome text, and somewhere in the background your home carrier starts counting. Roaming charges are one of the most common travel surprises, and they are easy to avoid once you know how they happen.
Why roaming charges happen
When you use your regular SIM in another country, your phone connects to a local network that your carrier does not own. Your carrier pays for that access and may pass the cost on to you through daily roaming passes, per-megabyte rates or add-on bundles. Your phone also uses data when you are not actively browsing: apps refresh in the background, photos back up to the cloud and software updates download on their own.
Step 1: Check what your carrier offers
Before you leave, look up your carrier's international options. Some plans include limited roaming in certain countries, some sell a daily pass, and some simply charge standard rates. The terms vary a lot by plan and by country, so read the details instead of assuming you are covered.
Step 2: Turn off data roaming on your home SIM
If you plan to use a different connection abroad, switch off data roaming for your home line. On an iPhone, look under Settings, then Cellular (or Mobile Service). On Android, look under Settings, then Network and internet, then SIMs. Menu names change between versions, so search your settings for “roaming” if you cannot find it. Airplane mode with Wi-Fi switched on is another simple way to keep a phone from using mobile data by accident.
Step 3: Download what you need before you go
The less you need to stream on the road, the less data you use. Before you fly, on home Wi-Fi:
- Download offline maps for each city or region you will visit. Both Google Maps and Apple Maps let you save areas for offline use.
- Download offline translation packs if you use a translation app.
- Save boarding passes, hotel bookings and tickets to your phone's wallet or as screenshots.
- Download music, podcasts and shows for the journey.
Our pre-trip phone checklist covers the rest of what to do before you fly.
Step 4: Use Wi-Fi wisely
Hotel and café Wi-Fi can save data, but public networks are shared with strangers. Avoid logging in to banking or other sensitive accounts on them, and read our guide to staying safe on public Wi-Fi for more tips.
Step 5: Pick a travel data option
For reliable data in a new country, you usually have three choices:
- Your carrier's roaming pass. Convenient, but compare the price with the alternatives.
- A local SIM card. Often good value, but you need an unlocked phone, a trip to a shop and sometimes ID, and you will swap out your home SIM.
- A travel eSIM. A digital SIM you install by scanning a QR code, with no shop visit and no physical card. Your home SIM stays in your phone, so you keep your regular number.
If you choose an eSIM, check that your phone supports it first. See our list of supported devices. eSIM2Fly plans are data-only with no hidden roaming fees, and you receive your QR code by email after purchase. Your plan starts when you first connect to a network in your destination, not when you buy or install it. Remember to turn data roaming on for the eSIM and off for your home SIM. Our FAQ walks through the setup.
Do you want to keep your home number reachable? If your carrier supports Wi-Fi calling, you can receive calls and texts on your home number over Wi-Fi or through your data connection while your data-only eSIM handles the internet.
Quick checklist
- Check your carrier's roaming terms.
- Turn off data roaming on your home SIM.
- Download maps, translation packs and bookings before you leave.
- Choose a travel data plan that fits your trip.
- Check your settings again when you land.
Ready to pick a plan? Browse all eSIM destinations and choose the country or region you are visiting.