Does an eSIM work in Cuba? Data, Wi-Fi, blackouts
Yes. A travel eSIM connects in Cuba by roaming on Cubacel, the only mobile network, on 4G and 3G. Two things decide whether it helps in 2026: in a recent nationwide blackout more than 80% of cell sites went offline, and since 6 June 2026 Visa and Mastercard no longer work, so buy data before you fly.
Contents
- How an eSIM connects in Cuba when ETECSA sells none
- When the grid collapses, the cell network goes with it
- Your Visa card won't pay for anything on the island
- Travel eSIM or the CubacelTur tourist SIM?
- Wi-Fi in Cuba is a bonus, not a plan
- Apps that won't work, and blocks you should expect
- Who actually travels to Cuba now, and what each trip needs
- Before you fly to Cuba: the checklist
- Going on from Cuba
Cuba is the one place in the Caribbean where the usual connectivity advice stops working. There is a single phone company, the state-owned ETECSA, and it does not sell eSIMs of its own. The power grid has collapsed island-wide again and again since 2024. And since June, the bank card in your wallet is useless on the island.
None of that makes a travel eSIM pointless. It makes it the one thing you can arrange at home, pay for with your own card, and have working before the plane lands. This guide covers what works in October 2026, what does not, and how to set yourself up for a trip where the network itself is the weak link.
Check the travel advice before you book. Canada's advice, last updated on 5 October 2026, is to avoid non-essential travel to Cuba because of shortages of fuel, electricity, food, water and medicine. It notes that all Canadian airlines have suspended service and tells Canadians there to consider leaving while options remain. The UK advises against all but essential travel, warns of frequent protests and says further grid collapses are likely.
How an eSIM connects in Cuba when ETECSA sells none
ETECSA runs Cuba's fixed lines, its internet and, under the Cubacel brand, the only mobile network on the island. There is no second carrier to choose from, and as of October 2026 no local eSIM to buy on arrival. Every foreign phone that gets a signal in Cuba, on roaming or on a travel eSIM, is riding the same Cubacel towers.
A travel eSIM for Cuba works the way roaming does: your phone registers on Cubacel as a visiting device and data flows through that partner agreement. Zwitchy's Cuba plans run on Cubacel's LTE network. Cuba has no commercial 5G, so the best you will see is 4G, and often 3G or nothing between towns.
One thing is NOT true, and it catches people out: your home carrier's roaming is not a safe default. Some carriers have no Cuban roaming deal at all, and the Canadian government's own page puts it bluntly.
Canadian cell phones may not work, even in large cities.
When the grid collapses, the cell network goes with it
This is the part no plan can fix. Cuba's mobile network needs mains power, and Cuba's power is failing. Island-wide collapses have hit on dates including 14 March 2025, 10 September 2025, 16 and 21 March 2026, three times in about ten days in July 2026, on 2 August 2026 and again on 18 September 2026. Restoring power has often taken more than a day.
ETECSA has said what that does to phones. During one total collapse, more than 80% of its cell sites went offline and internet traffic fell by 58%, according to ETECSA figures reported on 25 September 2026. The sites that stay up, on batteries or generators, then get crowded by everyone else looking for a signal. In mid-2025 only about half of Cuba's roughly 5,000 cell sites had backup power.
Outside the big collapses, rolling cuts are part of daily life. Figures from the state grid operator put up to 68% of the country without power at the same time on 18 June 2026. Hotels with generators keep the lights on, but the cell tower down the road may not.
A blackout hits every phone equally. Roaming, a local SIM and a travel eSIM all use the same Cubacel towers, so when a tower loses power, nobody near it has signal. What you can control is battery: carry a charged power bank, download offline maps, and save addresses and bookings to your phone before you leave the hotel.
Your Visa card won't pay for anything on the island
Cuba's central bank stopped accepting Visa and Mastercard on 6 June 2026, after a foreign card processor cut ties under new US sanctions. That is every Visa and Mastercard, whatever country issued it. The UK government spells out the knock-on effect for cash.
You will not be able to withdraw cash through ATMs with an international card.
For your phone, that changes the order of things. You cannot pay by Visa or Mastercard at an ETECSA counter or anywhere else on the island. Online top-ups through ETECSA's partner sites still take foreign cards, but only once you are already connected. Pay for your connection before you fly, and bring US dollars or euros in cash for everything else. Cards on the UnionPay and Russian MIR networks still work, but few visitors carry them.
Travel eSIM or the CubacelTur tourist SIM?
ETECSA sells a physical tourist SIM called CubacelTur, which you order online and collect with your passport. You must be 18 or over, and it is a plastic SIM only, not an eSIM. Pickup points include the main international airports (Havana terminals 2 and 3, Varadero, Santa Clara, Cayo Coco, Cayo Largo, Camagüey, Holguín and Santiago de Cuba) and ETECSA offices.
| CubacelTur tourist SIM | Travel eSIM | |
|---|---|---|
| What you get | Básico: 4 GB, 20 minutes, 20 SMS, 7 days, US$13.99. Plus: 10 GB, 100 minutes, 100 SMS, unlimited WhatsApp and Facebook, 30 days, US$34.99 | Data only, on Cubacel's 4G and 3G, from 1 GB for 30 days |
| Where you get it | Airport counter or ETECSA office after landing, with your passport | Installed at home, before you fly |
| Paying for it | Online before travel, or cash, UnionPay or MIR in Cuba | Your own card, at home |
| Your phone needs | A physical SIM tray | eSIM support (no tray needed) |
| Your home number | Replaces your home SIM if that is a plastic SIM | Stays active alongside it |
Those are the tourist SIM prices listed by ETECSA's sales partner Suena Cuba on 7 October 2026. Per gigabyte, the tourist SIM is cheaper. Roaming data into Cuba is expensive for every eSIM seller, and Zwitchy is no exception.
The eSIM wins on three things. It works the moment you land, before passport control and the SIM queue. It works on phones with no SIM tray, which now includes every US iPhone since the 14 and the new iPhone Duo, where CubacelTur is not an option at all. And it keeps your home number live for bank codes and calls from family.
A setup that works for a lot of trips: a small eSIM plan for the first days, so maps, a taxi and messages work from the runway. If you stay longer, have a phone with a tray and can get to an ETECSA counter, add CubacelTur later. Our Cuba plans show today's prices in your currency.
Wi-Fi in Cuba is a bonus, not a plan
Cuba's tourism ministry says three quarters of its hotels have Wi-Fi throughout, and that nine of its ten international airports offer 30 minutes free in arrivals and departures. Those figures predate the current crisis. In February 2026 ETECSA managers in Villa Clara admitted that long blackouts were badly damaging Wi-Fi hotspots as well as cell sites, because batteries were worn out and generators had no fuel.
Expect hotel Wi-Fi to be slow, shared and down when the power is. The Canadian advice sums up the island as a whole: internet access is limited. Plan for it to fail and treat a good connection as a nice surprise, not something to build your day around.
Apps that won't work, and blocks you should expect
Download everything before you go. Apple's list of countries for its media services does not include Cuba, and Google Play's paid content list leaves it out too. Install your maps, translation, banking and ride apps at home, with offline content saved, and check our offline prep checklist.
The other block is political. The UK warns that internet access can be cut during times of tension, and it has happened before: during the July 2021 protests, NetBlocks measured disruption to Facebook, WhatsApp, Instagram and Telegram. When it happens, it hits Cubacel's network, so it can hit anything that rides it. Whether a VPN helps, and when it is worth it, is in our VPN guide.
Who actually travels to Cuba now, and what each trip needs
Visitor numbers fell 62.8% in the first seven months of 2026, to 419,863, according to Cuba's statistics office. The people still going tend to fall into three groups, and each needs something slightly different from their phone.
- Visiting family. The trip where staying reachable matters most. Keep your home line on for calls and codes, use the eSIM for WhatsApp, and bring a power bank for the family's phones too.
- A resort week in Varadero or the cays. Resort Wi-Fi is shared by the whole hotel and goes down with the power. A small eSIM plan covers transfers, messages and the day you leave the resort.
- Independent travel through Havana, Viñales and Trinidad. The trip where offline maps matter most. Since 2022 every municipal seat in Pinar del Río province has had 4G, with extra sites in Viñales, but the roads between towns are patchy.
Before you fly to Cuba: the checklist
- Get your e-visa. The paper tourist card stopped being valid after 31 December 2025. Most tourists now apply on the official eVisa-Cuba platform (US$50 when it launched in 2025), or get it through a tour operator.
- Fill in the D'Viajeros form in the 72 hours before you land and keep the QR code on your phone. The UK and Canada both list it as mandatory, and airlines check it at check-in.
- Install your eSIM at home over Wi-Fi. Setting up your eSIM before you fly takes five minutes and is impossible without signal on arrival.
- Bring cash in US dollars or euros, enough for the whole trip. Cards will not work and ATMs will not take foreign cards.
- Pack a power bank and a car charger if you are driving, and download offline maps of every town on your route.
- If you are a US citizen, check your travel category. From 30 September 2026 OFAC ended group people-to-people educational travel and the professional-meetings category. People-to-people trips with a booking made before that date can still go ahead, according to OFAC. Other categories, such as family visits, were not changed by that rule.
Going on from Cuba
Cuba is not part of any regional Caribbean plan, so each island needs its own setup. If your trip continues, the Dominican Republic, Jamaica and Mexico all have far stronger networks and normal card payments. What a Caribbean plan covers explains which islands share one eSIM.
Does an eSIM work in Cuba?
Yes. A travel eSIM roams on Cubacel, Cuba's only mobile network, on 4G and 3G. ETECSA does not sell eSIMs itself, so a travel eSIM is the only way to use one in Cuba. Coverage drops sharply during blackouts.
Can I buy an eSIM after I arrive in Cuba?
Realistically, no. You need internet to buy and install one, Visa and Mastercard stopped working in Cuba on 6 June 2026, and Wi-Fi is limited. Install it at home before you fly.
Is there 5G in Cuba?
No commercial 5G. Cubacel runs 2G, 3G and 4G LTE. Expect 4G in Havana and most towns, and 3G or no signal on long stretches between them.
Will my phone work during a blackout in Cuba?
Often not. ETECSA says that in one recent nationwide collapse more than 80% of its cell sites went offline. Sites with backup power keep running but get congested. This affects every SIM and eSIM the same way.
Can I use my credit card to top up data in Cuba?
Not on the island. Since 6 June 2026 Visa and Mastercard are not accepted in Cuba, including at ATMs. ETECSA's partner websites still take foreign cards online, but you need a connection first. Pay for your data before you travel.
Is the CubacelTur tourist SIM cheaper than an eSIM?
Per gigabyte, yes. But it is a plastic SIM, so it needs a phone with a SIM tray, a passport check at a counter after landing, and it replaces your home SIM if that is a plastic one.
Do WhatsApp and Facebook work in Cuba?
Normally, yes, and WhatsApp is how most Cubans keep in touch. Access has been cut during protests before, as in July 2021, so download offline maps and save key details in case it happens again.
Popular Cuba eSIM plans
Tap a size to see live Cuba prices and buy in a couple of taps.
