How to avoid roaming charges on iPhone: the exact settings, and what US day passes cost
Which iPhone settings stop your home carrier billing you abroad, what actually triggers a roaming charge, and what AT&T, Verizon and T-Mobile charge as of September 2026.
· 8 min read
To avoid roaming charges on iPhone, turn Data Roaming off on your home line in Settings › Cellular, set your cellular data line to a travel eSIM or use Wi-Fi only, and don't answer calls or send SMS on your home number unless you've checked what your carrier charges. Data Roaming off stops data charges. It doesn't stop call and text charges, and on some US plans a single outgoing text starts a $12 day pass. With a Cabin Mode eSIM carrying your data, your home line only has to sit there receiving texts.
Below: what triggers a charge, the settings in order, and what the big US carriers charge for their day passes as of September 2026.
What actually triggers a roaming charge
Roaming charges come from your home line connecting to a foreign network and doing something billable. The billable things are:
- Using mobile data. Any byte, including background app refresh, iCloud sync and email checks.
- Making or answering a call.
- Sending a text or picture message.
- Receiving texts, on some carriers and plans. Often free, sometimes a few cents each.
On a day pass plan, the first billable event of the day starts a 24-hour charge. That's why the settings need to be right before you land. The phone connects and syncs within seconds of coming off Airplane Mode.
The settings, in order
Settings paths are US English; Cellular is labelled Mobile Data or Mobile Service in some regions.
1. Turn Data Roaming off on your home line
Settings › Cellular › tap your home line › Cellular Data Options › Data Roaming off. On some iOS versions the Data Roaming switch sits directly on the line's page instead.
This is the one that matters most. With it off, your home line won't use data on a foreign network, however much signal it has. Calls and texts are unaffected: they still come in.
If your iPhone has only one line, the switch is at Settings › Cellular › Cellular Data Options › Data Roaming.
2. Put data on a travel eSIM (or on nothing)
Settings › Cellular › Cellular Data › choose your travel line. Then tap the travel line and turn its Data Roaming on. That's safe: a travel eSIM is prepaid, and roaming onto partner networks is how it works.
No travel eSIM? Turn the Cellular Data switch at the top of Settings › Cellular off entirely, and use Wi-Fi.
3. Turn off Allow Cellular Data Switching
Settings › Cellular › Cellular Data › Allow Cellular Data Switching off.
With it on, iOS can fall back to your home line's data when the travel eSIM's signal is weak. If Data Roaming is off on the home line, that fails harmlessly. If anything turned it back on, you're paying. Turning switching off removes the question. More in dual SIM on iPhone for travel.
4. Decide what to do about calls and texts
Your options, from most to least reachable:
- Leave the home line on. Calls and texts arrive. Only answer or reply if you've checked the cost.
- Use Wi-Fi Calling. Settings › Cellular › home line › Wi-Fi Calling. On Wi-Fi, calls and texts on your home number go over the internet. On most US carriers, Wi-Fi Calling to US numbers is billed as a domestic call, but check with yours. Some carriers advise turning Wi-Fi Calling off abroad to avoid charges on calls to non-US numbers, so read your carrier's rules.
- Turn the home line off. Settings › Cellular › home line › Turn On This Line off. Nothing comes in, nothing is charged. You can flip it on briefly for a bank code.
- Airplane Mode with Wi-Fi on. The blunt option, useful at sea. See eSIM on a cruise or plane.
5. Stop surprise data use
Not a roaming setting as such, but it keeps a travel eSIM's allowance intact:
- Settings › [your name] › iCloud › Photos: turn off syncing over cellular, or pause it.
- Settings › Apps › App Store: turn off automatic downloads over cellular.
- Settings › Cellular › travel line › Data Mode › Low Data Mode: pauses background tasks on that line.
How much data do you need for a trip covers what uses the most.
US carrier day passes, as of September 2026
These are the headline rates from each carrier's own pages, checked 25 September 2026. Taxes and fees come on top, and carriers change prices, so check your account before you go.
| Carrier | Product | Price | What you get |
|---|---|---|---|
| AT&T | International Day Pass | $12/day for the first line, $6/day for each additional line used that day | Your plan's talk, text and data in 210+ destinations. Charged no more than 10 days per line per bill period on land ($120 cap) |
| AT&T | Day Pass at sea | $20/day | On participating cruise ships; no cap |
| Verizon | TravelPass | $12/day in most countries, $6/day in Mexico and Canada | Unlimited talk and text; 5 GB of high-speed data per session, then slower speeds |
| Verizon | International Monthly Plan | $100/month per line | For longer trips |
| T-Mobile | International Pass | 10 days with 15 GB: $50. 30 days with 30 GB: $75 | High-speed data and calling in 215+ destinations. T-Mobile's own pages list the 1-day pass inconsistently, so check the T-Life app |
Some other things worth knowing:
- What starts the clock. AT&T says the Day Pass starts when you use data, make or answer a call, or send a text. Verizon says the same for TravelPass, including receiving a call. Both say receiving an SMS doesn't start it.
- Auto-enrolment. AT&T says that if you arrive without an international feature, it may add the Day Pass automatically and text you with the option to opt out. Read that text.
- Included roaming. Many US unlimited plans include Mexico and Canada at no extra cost, and some T-Mobile plans include slow-speed data in many countries. If yours does, your roaming question may already be answered for those places.
- Per-use rates are worse. Without a pass, carriers bill per MB, per minute and per text. That's where the four-figure bills come from.
What that costs over a trip
A day pass is simple and keeps everything on your normal plan. It's also expensive once a trip runs past a few days.
| Trip | AT&T Day Pass | Verizon TravelPass | Cabin Mode Japan, 10 GB / 30 days |
|---|---|---|---|
| 3 days | $36 | $36 | $9.40 |
| 7 days | $84 | $84 | $9.40 |
| 14 days | $120 (capped) | $168 | $9.40 |
Day pass figures are the first-line headline rate before taxes. Cabin Mode price is for Japan, in USD, checked 25 September 2026; the app shows it in your own currency. A 20 GB, 30-day Japan plan is $16.40, and the Japan page lists every size.
Destinations vary. For Italy, 10 GB for 30 days is $8.56; for the United States, $13.26; for 33 countries across Europe on one eSIM, including the UK and Switzerland, $11.72. Browse all destinations.
The comparison isn't entirely like for like. A day pass includes calls and texts on your number; a travel eSIM is data only. Most travellers find that with WhatsApp, iMessage and FaceTime running over data, they barely need calls. eSIM vs roaming vs a local SIM has the wider trade-offs.
Outside the US
UK and EU carriers work differently. Within the EU, "roam like at home" rules mean EU customers pay domestic rates across member states, subject to fair use. UK carriers mostly charge a daily fee for Europe on many plans. Further afield, per-day or per-MB rates apply for most people. The same settings protect you in every case: Data Roaming off on the home line, data on a travel eSIM.
If you get a roaming charge anyway
- Check the bill for what triggered it. Often it's a single background data session or an answered call.
- Call your carrier promptly. Carriers sometimes credit a first accidental charge, particularly on maritime networks.
- Check the settings above before your next trip. The most common culprit is Data Roaming being switched on for the wrong line.
Frequently asked questions
Does turning off Data Roaming stop all roaming charges?
No. It stops data charges on that line. Calls and texts still work with Data Roaming off, and your carrier can charge for making or answering calls and sending texts.
Will I be charged for receiving texts abroad?
On most major US plans, no, and receiving an SMS doesn't start AT&T's or Verizon's day pass. Some carriers and plans do charge a few cents per received message, so check yours.
How much is Verizon TravelPass per day?
As of September 2026, Verizon lists TravelPass at $12 a day in most countries and $6 a day in Mexico and Canada, before taxes.
How much is the AT&T International Day Pass?
As of September 2026, $12 a day for the first line and $6 a day for each additional line used the same day, with a cap of 10 charged days per line per bill period on land. At sea it's $20 a day with no cap.
Should I turn on Airplane Mode to avoid roaming charges?
It works, but it also turns off your travel eSIM. A better setup is Data Roaming off on your home line and data on a travel eSIM. Use Airplane Mode with Wi-Fi at sea, where ships' networks bill at very high rates.
Is a travel eSIM cheaper than a roaming day pass?
For anything beyond a couple of days, usually by a wide margin. Seven days on a $12 day pass is $84. A 10 GB, 30-day Cabin Mode plan for Japan is $9.40 (checked 25 September 2026).