Cartagena de Indias is best explored on foot, amidst colorful balconies, city walls, and old town streets, and having a map and photos always at hand changes the trip. An eSIM for Cartagena gives you internet from the moment you land at Rafael Núñez airport, without buying chips or paying your operator's expensive roaming fees. In this guide, you'll see how to connect upon arrival, what coverage there is in the walled city and Getsemaní, how many GB it makes sense to bring for a Caribbean getaway, and why the eSIM you buy is for Colombia.
Connection upon landing at Rafael Núñez
Rafael Núñez Airport (CTG) has a huge advantage: it's only about a 10-minute taxi ride from the historic center, within the city itself. With an eSIM already installed, when you land, just turn off airplane mode, activate the data for that line, and you'll have internet to order a taxi, look up your hotel's location in the old city, or announce your arrival.
The secret is to install the eSIM before leaving your home country, using your home Wi-Fi, so you don't have to rely on airport Wi-Fi. Cartagena is a very walkable and tourist-friendly city, and arriving with a loaded map helps you navigate the alleys from minute one. If you've never used one, the guide on how to activate an eSIM explains it clearly step by step.
Why eSIM and not roaming in Cartagena?
Because roaming in Colombia is expensive. Many companies charge €10-20 per day to use your data outside the European Union, and in a few days of beach and city, that turns into an unpleasant bill. The eSIM is a fixed plan you buy before traveling: you know exactly what you're paying, and there are no surprises when you return.
And since it's 100% digital, you don't lose your Spanish number or have to remove your home SIM: the eSIM is for data, and your usual line continues to receive calls and SMS. If you want to see the numbers side by side, you can find them in eSIM vs. roaming, with prices and when each option is convenient.
Tip: don't activate the eSIM until you're in Colombia. Many plans start counting days from the first connection, so turn it on when you land to take full advantage of every day at the beach.
Coverage in the walled city and Getsemaní
The area you'll visit most also has the best coverage. In the walled city, with its squares, boutique hotels, and restaurants, there's plenty of 4G for maps, social media, and sharing every beautiful corner via WhatsApp. The Getsemaní neighborhood, with its murals and nightlife, also has good signal on most of its streets.
In Bocagrande, the modern area of hotels and urban beach, the connection is stable, and at San Felipe Castle, you'll have data to check schedules or order a taxi back. With the eSIM, you connect to local mobile networks in Colombia just like a local user, without guest rates. Only in very interior alleys or very thick colonial buildings might the signal drop a bit, which is normal in a historic city.
Data and the Rosario Islands
Almost everyone who goes to Cartagena takes an excursion to the Rosario Islands or Barú, and it's good to manage expectations there. On the more touristy islands, there's usually some coverage near hotels and beach clubs, but on the open sea and in more pristine areas, the signal can be weak or nonexistent. This is normal: they are islands.
The recommendation is simple: download the offline map and tour information before boarding, with the eSIM data already working in the city. That way, even if you lose signal on the island for a while, you'll have the important stuff at hand. For the rest of the trip on land, coverage won't be a problem. If you plan to travel more around the country, also check out our complete guide to the eSIM for Colombia.
How many GB to bring for your getaway
For a few days in Cartagena, most travelers will manage perfectly well with 3 to 5 GB, provided they use hotel Wi-Fi at night. As it's a city for walking and beach activities, you'll mostly use data for maps, photos, and some social media. This table will guide you:
| Traveler profile | Days | Recommended data |
|---|---|---|
| Beach getaway (maps, WhatsApp, photos) | 3-4 days | 3 GB |
| Active tourist (Instagram, tours, daily Uber) | 4-6 days | 5 GB |
| Heavy use (videos, streaming, data sharing) | 5-7 days | 8 GB or more |
If your getaway is shorter, take a look at the Colombia eSIM for one week, designed specifically for short trips like this.
Cartagena is a city: choose the Colombia eSIM
Although you might search for "eSIM Cartagena," what you buy is the Colombia eSIM: there are no city-specific plans, because coverage is national. And that's ideal. With the Colombia line, you have data in Cartagena, but also if you escape to Medellín, Bogotá, or the Coffee Region, without buying anything new along the way.
That's why the correct link is the Colombia eSIM. If your itinerary includes more cities, our eSIM for Medellín guide will be useful, because the same plan covers both destinations with a single line. Install, activate upon arrival, and enjoy the connected Caribbean.
Frequently asked questions
Is there an eSIM just for Cartagena?
No. Cartagena is a city in Colombia, so you use the country's eSIM. That same line works in Cartagena, Medellín, Bogotá, and the rest of Colombia, giving you total freedom if your trip includes multiple stops or excursions.
Will I have internet in the Rosario Islands?
Limitedly. Near hotels and beach clubs, there may be some signal, but on the open sea and in more pristine areas, it may fail. It's best to download maps and tour info before boarding, with the eSIM already active in the city, and use it on the way back.
How many GB do I need for Cartagena?
For three or four days of beach and sightseeing, about 3 GB is usually enough if you use hotel Wi-Fi at night. If you upload many photos and videos, use Uber daily, or share your connection, upgrade to 5 GB or more to be worry-free throughout your trip.
Does the eSIM work when leaving Rafael Núñez airport?
Yes, if you installed it beforehand with Wi-Fi. Upon landing, just turn off airplane mode and activate the data for the eSIM line. In seconds, it connects you to the Colombian network, and you can already order a taxi or open the map. The airport is just a few minutes from the historic center.
Do I keep my Spanish number during the trip?
Yes. The eSIM is a second line just for data, so your Spanish SIM remains active for calls and SMS. You have both simultaneously and choose which line to browse with. It's the most practical: eSIM for internet in Cartagena and your usual number for important matters.
Conclusion
Cartagena is a destination for walking, beaches, and photos, and all of that is best enjoyed with data in your pocket. Remember that what you buy is the Colombia eSIM, which covers Cartagena and any other stop in the country. Install it before you travel, activate it upon landing at Rafael Núñez, and forget about roaming. Arrive in Cartagena connected with the Colombia eSIM and make the most of every walled corner.
