If you're traveling to Brazil or have already landed and your Claro line isn't providing data, this guide gets straight to the point: the steps to activate roaming, how to confirm it's active, common errors that block it, and what to do if, after all that, it still doesn't work.
How to activate Claro roaming in Brazil, step by step
To activate Claro roaming in Brazil, check three things in this order: that data roaming is turned on on your phone, that your plan has the international roaming package active in your country's Mi Claro app, and that the device detects a Claro Brazil signal or its partner network upon landing.
In practice, the order in which you resolve this matters because each step depends on the previous one. If the international package isn't active in your plan, no matter how much you adjust your phone: you won't have data. And if your phone has data roaming turned off, it also doesn't matter if your Claro plan includes roaming in Brazil. Follow this sequence:
- Activate data roaming on your phone. On Android, this is usually found in Settings > Mobile Networks > Data Roaming. On iPhone, it's in Settings > Cellular Data > Data Roaming. This switch is for the phone, not Claro, and is off by default on most devices.
- Confirm in your country's Mi Claro app that international roaming is active. Depending on your plan, it may be active by default or require you to activate it yourself from the app, before traveling.
- If the app asks you to choose the destination country, select Brazil and not another country in the region: some plans activate roaming by zone and others require specific destination confirmation.
- Restart your phone upon landing (or put it in airplane mode for a few seconds and then turn it off) to force it to search for and register on the local network available in Brazil.
- If after all this it still doesn't connect, contact Claro in your country via WhatsApp or the app's chat. There is no free international support phone line for roaming, so chat is usually the fastest channel when outside the country.
If you're going to be in Brazil for more than a few days or travel frequently, it's worth comparing this with a data eSIM for Brazil before you leave: you install it before traveling and activate the connection upon landing, without relying on your local operator's package being correctly configured.
Before traveling: what to check depending on your country (Mexico, Colombia, Argentina, Chile, Peru)
Claro operates as a local brand in each country, but each subsidiary manages international roaming with its own app and plan conditions. Before you travel, locate the app for your country and check your roaming status there, not in another country's app, even if it looks the same.
| Country | Official App | What to check before leaving |
|---|---|---|
| Mexico | Mi Claro México | If your plan includes international roaming or if an additional package for Brazil needs to be activated |
| Colombia | Mi Claro Colombia | Roaming status in the "services" or "add-ons" section of the plan |
| Argentina | Mi Claro Argentina | If the roaming package is activated by country or by zone (South America in general) |
| Chile | Mi Claro Chile | Balance or plan validity, as some roaming packages require an active line |
| Peru | Mi Claro Perú | If roaming is automatic or if it needs to be requested in advance |
A practical tip: don't leave it until the last minute. Plan changes or additional package activations are not always reflected instantly, and arriving at the airport without having confirmed it leaves you dealing with this just when you have the least control over Wi-Fi or available time.
How to activate it if you're already in Brazil and forgot
If you've already landed and notice you don't have data, the process is almost the same, except now you depend on available Wi-Fi (airport, hotel) to access your country's Claro app or website and activate the roaming package from there, because without mobile data, you can't use the app with its own connection.
- Connect to airport or hotel Wi-Fi as soon as you can.
- Open your country's Mi Claro app (not Brazil's) and try to activate the international roaming package.
- If the app doesn't load well with public Wi-Fi, try from your country's Claro website in your browser.
- Check your phone's APN: when roaming, some devices don't automatically configure the data access point and you need to set it to automatic mode or reset it from Network Settings.
- If none of this works with Wi-Fi, contact your country's Claro support via WhatsApp as soon as you have a connection.
One detail that almost no one checks and that causes a good part of these cases: the phone screen showing the "Claro" logo doesn't mean that data roaming is active. That icon confirms that there is voice signal from the network Claro has an agreement with in Brazil, but data roaming is a separate switch, both on the phone and in the plan. You can have four "Claro" signal bars and zero data at the same time, so the indicator to look for is the 4G/LTE or 5G icon next to the signal icon, not the operator's name.
How to tell if your Claro roaming is really activated
The most reliable way to confirm it isn't to look at the home screen, but to try to use actual data and check two things at the same time: the network icon (4G, LTE, or 5G) and if a page or app loads without being connected to Wi-Fi.
- Turn off Wi-Fi for a moment and open any simple page in your browser.
- If it loads, data roaming is working.
- If it doesn't load, check your country's Mi Claro app for recent data consumption: if consumption is shown, it's a phone problem (data roaming off, APN); if there's no consumption, it's a plan activation problem.
- Also verify that the plan hasn't run out of balance or that the roaming package hasn't expired, which can happen if you activated it for a few days and the trip extended.
If roaming cuts off as soon as you cross the border, it's not always your problem: it could be the phone, the plan, or the coverage of the network Claro has an agreement with in that area of Brazil. Before assuming you did something wrong, separate these three possible causes and check them one by one.
Common errors that cause roaming not to work
Most cases of "I activated everything and it doesn't work" are due to a few common reasons. Before contacting support, it's worth ruling these out first:
- The phone's data roaming is off even if the Claro plan includes it: these are two different switches and both must be activated.
- Airplane mode remained active after a flight and was never fully deactivated, or the phone didn't re-register on the network after being turned off.
- Battery saver disables data roaming on some Android devices when the battery level drops below a certain point, without warning.
- The roaming package had a short validity (e.g., a few days) and has already expired, even if the base plan is still active.
- The line has an outstanding balance or a block that doesn't affect local calls but does block international roaming.
- The APN was not configured automatically upon arrival in Brazil, which is more common on unlocked devices or those purchased outside Claro's official channel.
If you've already checked your phone and plan and it still doesn't work, the problem is probably on the provider's side: coverage of the partner network in your area of Brazil, an error in package activation, or a configuration that only support can correct. That's when it's better to solve it another way than to keep wasting travel hours.
How much Claro roaming costs in Brazil
There's no single figure: the cost of Claro roaming in Brazil depends on your contracted plan, the country you're traveling from (Mexico, Colombia, Argentina, Chile, or Peru), and whether the package is charged daily, by data bracket, or included in the plan. Since this figure changes frequently and varies by country, check it directly in your country's Mi Claro app or official Claro website before traveling, not in forums or third-party comparisons that may be outdated.
What you can anticipate is uncertainty: it's not always clear how much you're going to pay until you're already using the data, especially if the package is charged per consumption and not a fixed, closed amount. For many travelers, that lack of predictability is precisely what makes them look for an alternative with a fixed price before leaving home.
Claro roaming vs. data eSIM for Brazil
If what you need in Brazil is primarily data (maps, messaging, social media) and not so much to keep your same number for calls, a data eSIM is a direct alternative to operator roaming. Here's how they compare on the most important points when deciding:
| Criteria | Claro Roaming | Data eSIM (PuraSIM) |
|---|---|---|
| Activation | Depends on the plan and your country's app; may require contacting support | Installation before traveling, activation in approximately 1 minute upon arrival |
| Phone number | You keep your number for calls and SMS | Data only; does not replace calls or SMS from your main line |
| Price | Varies by plan and country; must be confirmed in the app before traveling | Fixed price for the data package, visible before purchase |
| Travel Support | Chat or WhatsApp of your country of origin's operator | 24/7 support in all languages via email and WhatsApp |
| Validity for activation | Depends on the contracted plan | 180 days to activate it from purchase |
| Ideal for | Someone who needs to continue receiving calls to their local number | Someone who only needs data and wants the cost settled before traveling |
Neither option is "better" absolutely: if you depend on people calling your usual number, roaming is still necessary for that. But if the real problem is having reliable data without depending on the operator's activation working correctly, an eSIM solves exactly that part. You can review the complete technical difference between eSIM and physical SIM if you've never used one.
What to do if Claro roaming still isn't working
If you've already checked your phone, confirmed your plan, and tried restarting the network, and Claro roaming still isn't providing data in Brazil, there are two paths: keep insisting with operator support, or solve it another way in the meantime to avoid losing travel time waiting for a response.
- Contact Claro in your country via WhatsApp or the app's chat (not by phone, because that free international channel doesn't exist) and describe exactly what step is getting stuck: if it activates but doesn't provide data, if the roaming option doesn't appear, or if the package was activated and still doesn't connect.
- Specifically ask if there's any block on the line (balance, identity verification, roaming limit) that you can't see from your end.
- While waiting for a response, if you need data immediately (to get to the hotel, order a ride, find your way), an eSIM for Brazil installs in minutes using any available Wi-Fi and doesn't depend on the operator solving the problem first.
This is not a criticism of Claro roaming: it's simply that when the problem is on the provider's side and not yours, the fastest solution is not always to keep waiting for them to fix it, but to have an active plan B with dedicated support available at all times.
How to choose between Claro roaming and an eSIM for your next trip
Before deciding what to use next time you travel to Brazil, these questions help to quickly define it:
- Do you need to be called on your usual number? If so, roaming is still part of the equation, even if only for voice.
- Is your phone eSIM compatible? Most devices from recent years are; you can check the list of eSIM compatible phones to confirm.
- Is this your first trip using an eSIM? The installation process is different from a physical SIM; it's advisable to check how to install an eSIM before leaving, not at the airport.
If you're still not sure what an eSIM is exactly or how it differs from your physical Claro SIM, the starting point is to understand what an eSIM is before comparing prices or activation steps.
Frequently asked questions
How can I activate my Claro roaming in Brazil?
Activate data roaming in your phone's settings, confirm that your plan has the international roaming package active from your country's Mi Claro app (Mexico, Colombia, Argentina, Chile, or Peru) and, if prompted, select Brazil as the destination. Restart your phone upon landing to register on the local network.
How to activate data roaming in Brazil?
Data roaming is activated in two different places: in your phone's network settings (data roaming switch) and in your Claro plan, from your country's app. Both must be active simultaneously for it to work.
How is Claro international roaming activated?
It depends on the country from which you contracted your line: in most cases, it is activated or confirmed from the corresponding Mi Claro app (Mexico, Colombia, Argentina, Chile, or Peru), before traveling, checking if your plan includes it or needs an additional package.
How do I know if I have roaming activated on Claro?
The most reliable way is to turn off Wi-Fi and try to load a page with mobile data: if it loads, roaming is active. You can also check recent data consumption in your country's Mi Claro app; if consumption appears, roaming is indeed working even if the phone shows a weak signal.
Do I need to notify Claro before traveling to Brazil?
It's not always mandatory, but it is recommended: some plans require activating the roaming package in advance from the app, and doing it with calm Wi-Fi at home avoids relying on airport Wi-Fi or support once you're already in Brazil.
Does Claro roaming work the same throughout Brazil?
Coverage depends on the local network Claro has a roaming agreement with in each area of Brazil, so it can vary between large cities and more remote areas. If your trip includes destinations outside the capitals, it's advisable to confirm this with support before leaving.
What happens if my Claro roaming doesn't activate and I'm already in Brazil?
Connect to Wi-Fi (airport or hotel), try to activate the package from your country's Claro app or website, and check your phone's APN. If it still doesn't work, contact support via WhatsApp or chat; there is no free international phone line for this.
Is it better to use Claro roaming or an eSIM in Brazil?
It depends on what you need: if you need to continue receiving calls to your usual number, roaming is still part of the solution. If what you mainly need is data with a defined cost before traveling, a data eSIM for Brazil solves that without depending on operator activation.
Conclusion
Activating Claro roaming in Brazil is almost always resolved by checking, in order, the cell phone, the plan, and the network: this order prevents wasting time blaming coverage when the problem is a switch turned off on the phone. But if you have already gone through these steps and roaming continues to fail, or you simply prefer not to depend on the operator's activation working correctly the day you land, it makes sense to have a backup plan resolved beforehand.
That's what the data eSIM for Brazil is for: it is installed before traveling, activated in approximately 1 minute upon arrival, and if anything is unclear, there is 24/7 support in all languages via email and WhatsApp, without depending on a single helpline. And if your route goes beyond Brazil, the same approach applies in more than 200 destinations, with 180 days from purchase to activate it when you need it.
