Using mobile data in Cuba: what to expect
Cuba is the honest exception on this site, and it's worth being completely clear up front so you arrive with the right expectations. There is a single state operator, ETECSA, and the mobile internet experience is slow, inconsistent and unlike anywhere else most travellers will have used. You'll see 3G and 4G labels advertised, but real-world speeds are often a fraction of what those numbers suggest, connections drop, and even basic pages can take a while to load. A travel eSIM that roams onto ETECSA can keep basic messaging and maps working in and around Havana, which is genuinely useful, but it is not a substitute for the always-on, fast data you'd expect in Europe, the US or most of Asia. The right way to think about connectivity in Cuba is as an occasional bonus, not a guarantee — you should plan to be offline far more than you're used to, and build your trip so that being unreachable for stretches isn't a problem. Going in with that mindset turns a frustrating experience into a manageable one.
Coverage across Cuba
The most usable signal is in Havana, especially the central neighbourhoods of Vedado and Habana Vieja, and in the big international resort strip of Varadero where the tourism infrastructure is concentrated. Santiago de Cuba, Trinidad, Cienfuegos and Camagüey have coverage of varying and generally lower quality. Once you leave the cities and the resort areas — the tobacco country of the Viñales valley, the offshore keys like Cayo Coco, the rural stretches of the Oriente — service becomes sparse and unreliable, and you should assume you'll often have nothing. Historically, the way people get online in Cuba has been through hotel Wi-Fi and ETECSA Wi-Fi hotspots in public parks and squares, often bought with scratch cards, so don't build your travel around mobile data being available everywhere. Download offline maps of every city and region you'll visit before you arrive, because looking something up on the move is not something you can count on here.
How much data you'll need
Because the network itself limits what you can realistically do, the apps that matter most in Cuba are the lightweight ones. WhatsApp for short messages, Google Maps with your regions saved offline so navigation works without a live connection, and a translation app for menus and signs will carry most of your needs. Heavy use like streaming video, large uploads or sustained video calls is often impractical no matter how much data your plan includes — the bottleneck is the network, not your allowance. For a typical trip, a modest data amount covers messaging and occasional map and weather checks, and there's little point loading up on a large plan you simply can't push data through at speed. The plans above show what's available; pick a small-to-moderate amount and treat anything that connects quickly as a pleasant surprise. Many visitors find the forced disconnection is one of the more memorable parts of a Cuba trip — but if you do need to be reachable for work or family while you're away, plan to do it from a hotel during a quiet window rather than expecting your phone to work on the move.
Keep your number and WhatsApp
Dual-SIM still helps in Cuba even with the network limits. Run the eSIM for whatever data you can get, while your home SIM keeps your usual number live for calls, SMS and two-factor codes for the moments you do find a usable signal, and WhatsApp stays tied to your home number so your contacts and chats are unchanged. Crucially, switch your home SIM's data roaming off so it isn't endlessly trying to connect in the background — international roaming charges in Cuba can be steep, and you want all data going through the flat-rate eSIM rather than your home line silently burning money while searching for a network.
Before you fly
Check that your phone supports eSIM with our compatibility checker before anything else, then install the plan on home Wi-Fi before you travel. This step matters more in Cuba than almost anywhere, because installing or activating once you're on the ground may be difficult given the network conditions. The plan activates when it can first connect after you land at Havana's José Martí airport (HAV) or Varadero (VRA). Finally, set expectations with anyone back home that you may be hard to reach for a day or more at a time — in Cuba that's completely normal and not a sign anything is wrong with your eSIM or your phone.