Turn off data roaming before you leave your home country
The single most effective way to avoid roaming charges is to disable data roaming on your phone before you travel. When data roaming is on, your phone automatically connects to local networks in other countries and charges you for every megabyte of data you use — often $5 to $10 per megabyte depending on your carrier and destination.
On an iPhone, go to Settings > Cellular > Cellular Data Options and toggle off "Data Roaming". On Android, go to Settings > Network & Internet > Mobile Network and turn off "Data Roaming". Do this before you leave home, not after you land. Many people discover roaming charges only when they check their bill weeks later.
Turning off data roaming does not disconnect you from calls and texts — those use different networks. You will still receive calls and text messages normally. You simply will not be able to browse the web, use apps, or check email unless you are connected to WiFi.
Key Takeaways
- Disable data roaming in your phone settings before traveling internationally, as it can cost $5 to $10 per megabyte when left on.
- Connect to WiFi at your hotel, airport, or local cafes to use data without roaming charges, but verify the network name with staff to avoid fake hotspots.
- Purchase a local SIM card or an international data plan from your carrier before you travel, depending on how long you are staying and how much data you need.
- Check your carrier's roaming rates for your specific destination, as costs vary widely by country and carrier.
- Monitor your data usage during your trip by checking your carrier's website or app, since roaming charges can accumulate quickly even with small amounts of use.
Use WiFi instead of cellular data
WiFi is free and does not trigger roaming charges. Hotels, airports, cafes, and restaurants in most countries offer free WiFi. When you connect to WiFi, your phone uses that network instead of your cellular connection, so you can browse, message, and use apps without any charges from your carrier.
Be cautious with public WiFi networks. Before connecting, ask staff at the cafe or hotel what the correct network name is — scammers sometimes create fake hotspots with names like "Airport_Free_WiFi" to intercept your data. Only connect to networks you have confirmed with an employee. Avoid logging into banking apps or entering passwords on public WiFi unless you are using a VPN, which encrypts your connection.
If you need data while away from WiFi, you can temporarily turn data roaming back on, use it for a specific task, and turn it off again. This gives you control over when you are charged rather than letting your phone connect automatically.
Buy a local SIM card or eSIM for your destination
A local SIM card gives you a phone number and data plan in the country you are visiting, usually at a fraction of what your home carrier charges for roaming. You can buy a SIM card at the airport, a local phone shop, or a convenience store in most countries. Prices vary widely — some countries offer SIM cards for $5 to $15 with data included, while others cost more.
To use a local SIM, your phone must be unlocked, meaning it is not restricted to your home carrier. Most carriers will unlock your phone for free if you ask, but check before you travel. You will need to remove your home SIM card and insert the local one. Your home phone number will not work while the local SIM is in, but you can switch back when you return home.
If your phone supports eSIM (a digital SIM stored on your phone), you can add a local plan without removing your physical SIM card. Many carriers now offer eSIM plans for travelers. You download the plan to your phone before you travel, and it activates when you arrive. This is faster than buying a physical SIM card at the airport.
Purchase an international data plan from your carrier
Most carriers offer international data plans that cost less than standard roaming rates. These plans typically cover a specific country or region and last for a set number of days. For example, a carrier might offer 500 MB of data for 7 days in Europe for $20, compared to $50 to $100 in roaming charges for the same amount of data.
Contact your carrier before you travel to ask what plans are available for your destination. You can usually purchase a plan through your carrier's website, app, or by calling customer service. The plan activates on the date you choose, so you can time it to start when you arrive. Once the data limit is reached or the days expire, the plan stops and you revert to standard roaming rates unless you purchase another plan.
International plans work best if you know roughly how much data you will use and how long you will be away. If you are traveling for a month or staying in one country for more than a week, a local SIM card is usually cheaper than multiple international plans.
Check your carrier's roaming rates before you travel
Different carriers charge different rates in different countries. Your carrier's website should have a roaming rates page where you can search by destination and see what you would pay per megabyte, per minute for calls, and per text message. Rates can range from $1 to $15 per megabyte depending on the country and carrier.
Some carriers offer roaming in certain countries at no extra charge — for example, some US carriers include roaming in Canada and Mexico in their standard plans. Check whether your destination is covered before you assume you need to buy a separate plan or SIM card.
Write down or screenshot the rates for your destination so you know what you are paying if you do use roaming. This helps you decide whether to turn data roaming on for a quick task or wait for WiFi.
Monitor your data usage while traveling
Even with data roaming turned off, you may accidentally turn it back on, or your phone may reconnect automatically if you restart it. Check your data usage regularly during your trip through your carrier's website or app. Most carriers show real-time usage and charges, so you can catch unexpected roaming activity before the bill gets large.
If you see roaming charges appearing, turn off data roaming immediately and contact your carrier to ask whether the charges can be reversed. Some carriers will waive a small amount of roaming charges if you contact them quickly, especially if it was accidental use.
Frequently Asked Questions
Will I be charged for receiving calls and texts while roaming?
Receiving texts is usually free. Receiving calls may cost you — your carrier charges you for the incoming call even though you did not initiate it. Sending calls and texts will cost more than at home. Check your carrier's rates before you travel so you know what to expect.
What happens if I use data roaming by accident?
You will be charged at your carrier's roaming rate for every megabyte used. Turn off data roaming immediately and contact your carrier. If the charges are small and it was clearly accidental, some carriers will reverse them, especially if you call within a few days of the charge appearing.
Can I use my phone on airplane mode and still receive calls?
No. Airplane mode turns off all wireless connections, including cellular. You will not receive calls or texts while airplane mode is on. Turn off airplane mode when you land so your phone can reconnect to networks.
Is it safe to use a local SIM card in my phone?
Yes, as long as your phone is unlocked. Inserting a different SIM card does not damage your phone or void your warranty. Your home carrier's SIM card will still work when you return home. Make sure to keep your home SIM card in a safe place while you are traveling so you do not lose it.
What is the difference between a data plan and a SIM card?
A data plan is an add-on to your existing service with your home carrier — you keep your SIM card and phone number. A local SIM card replaces your home SIM and gives you a new phone number in that country. A data plan is simpler if you are traveling for a short time; a local SIM is cheaper if you are staying longer or need a lot of data.