Simbye: does it work on a cruise?
Simbye in the setting that actually applies on a ship — port mornings, sea days, and the long gaps between them where most travel eSIMs quietly stop working.
Does Simbye work at sea?
Simbye sells travel eSIMs for more than 190 countries, through its own app or its website. The catalogue runs from two-euro single-country bundles up to a build-your-own profile covering ten countries at once. Unused plans are refundable for 30 days. On a cruise it is a port-day tool, and only that. Nothing in the range reaches the ship once it is at sea.
Prices last confirmed
Simbye discount codes
Who Simbye is for
The company calls itself founded by travellers, for travellers, which is a line most eSIM brands use. The figures behind it are the interesting part. Simbye reports more than 300,000 customers. Its App Store rating sits near 4.8, across over 12,000 reviews. Coverage is stitched together from more than 700 mobile partners, so a Simbye plan is really a local carrier somewhere, resold under one brand. The catalogue holds single-country plans, regional bundles for Europe and Asia, and worldwide packages.
Premium plans add something most rivals skip: a real phone number, in codes including +1, +33, +44 and +66. Those carry calls and texts rather than data alone, which matters if a cruise line, a port agent or a car-hire desk needs to ring you back. The app also hides a feature the website does not have. The Custom eSIM builder sets a data allowance anywhere from 5GB to 50GB, spreads it across as many as ten countries in one profile, and runs for 30 to 365 days. That is closer to building your own bundle than picking off a shelf, and on a multi-country itinerary it is the reason to look at Simbye at all.
What happens when the ship leaves port
Every Simbye eSIM rides on land-based networks in the countries it covers, and a ship spends a great deal of time away from all of them. Alongside in Barcelona or Cozumel it behaves normally, picking up the same towers a phone would find after a flight. Then the ship pulls away and the bars go. That happens about 12 nautical miles out, where the last shore mast drops out of range. Simbye runs no maritime network of its own, so there is nothing behind it to take over. Treat it as coverage for the hours ashore, and pair it with a maritime plan for the days in between.
What Simbye costs, and what that buys
Prices below come from simbye.com, checked in September 2026. Single-country plans open around €1.95 for Turkey and €2.95 for Japan, which is genuinely cheap for a day ashore. Regional bundles start near €23.95 for Europe. Adding a phone number costs considerably more: a USA plan with a number begins around €23.95, and a worldwide plan with calling around €29.95. Validity across the range runs from one month to a full year, depending on which plan is chosen.
The Custom eSIM builder is the part worth understanding before buying. It lives in the app only, takes a data allowance between 5GB and 50GB, and splits it across up to ten countries in a single profile, valid for 30 to 365 days. A seven-port Mediterranean sailing touching five countries is exactly the case it was built for, and the alternative is buying five separate plans. Top-ups are unlimited on an installed eSIM, with no contract. Every purchase also earns 5% cashback toward a later trip, and anything left unused can be refunded within 30 days.
See Simbye plans →Code ESM15 applies at checkout
The details that matter on a ship
| Coverage | 190+ countries via 700+ network partners |
|---|---|
| Hotspot / tethering | Supported on most plans; counts toward the data allowance |
| 5G | Available where the local carrier supports it, up to 1 Gbit/s |
| Data / calls / SMS | Data-only on standard plans; real phone numbers with calls/SMS on premium plans |
| Validity | 30 days up to 365 days depending on plan |
| Activation | QR code by email or in-app; activation in about 60 seconds |
| App | Simbye app (iOS/Android); Custom eSIM builder is app-exclusive |
| Top-ups | Unlimited top-ups on an installed eSIM, no contract required |
| Refunds | 30-day refund guarantee on unused plans |
| Support | 24/7 multilingual support via WhatsApp and email, 12 languages |
Getting it working before you sail
Plans are bought in the app or on simbye.com, and the eSIM arrives as a QR code by email. Scanning it takes about 60 seconds. Wi-fi is needed for that one step and nothing after it, which is why Simbye advises installing at home rather than in a departure lounge. Leave the line switched off once it is installed. It can sit there dormant until the first port, then connect the moment a local network comes into range.
Where Simbye shines, and where it does not
- The Custom eSIM builder covers up to ten countries in one profile.
- Premium plans add a real phone number for calls and texts.
- Every purchase earns 5% cashback for a future trip.
- Unused plans qualify for a 30-day refund.
- Sea days fall outside every plan Simbye sells.
- The Custom eSIM builder is locked to the app, not the website.
- Phone-number plans cost a lot more than data-only ones.
- Hotspot use on some unlimited plans comes with restrictions.
Cruise and ferry plans
The plans database on this site holds cruise, ferry and maritime products only. Simbye publishes none, so there is no plan table on this page. Its regional data plans remain the relevant purchase for port days.
The verdict for cruise passengers
On a multi-country itinerary Simbye earns its place, because one custom profile across five or six ports beats juggling a plan per country. The cashback and the 30-day refund make an unused backup plan close to risk-free. Two caveats decide it, though. The builder that makes Simbye worth choosing only exists in the app. And every sea day on the schedule falls outside what it sells, so it belongs alongside a maritime plan rather than instead of one.
What to pair this with for sea days
For the hours between ports you need one of the three maritime providers:
Frequently asked questions
01Does Simbye work on a cruise ship?+
In port, yes. At sea, no. Simbye sells terrestrial travel data; the ship's own maritime network is a separate system that only GigSky, Saily and Maya sell access to. You want one of each.
02What does Simbye's Custom eSIM feature actually build?+
It builds a single profile to order. The data allowance is set anywhere from 5GB to 50GB, spread across up to ten countries, with a validity window between 30 and 365 days. One profile can therefore cover a whole multi-country itinerary. The catch is that the builder exists only inside the Simbye app, never on the website.
03Do Simbye plans include a working phone number for calls?+
Only the premium plans do. Standard plans carry data and nothing else. Premium packages add a real number in codes such as +1, +33, +44 or +66, which means calls and texts work normally. They cost noticeably more than the data-only plan for the same country.
04How quickly can a Simbye eSIM be used after buying it?+
Simbye puts it at roughly 60 seconds from scanning the QR code. Wi-fi is needed for that first step only. After that the eSIM sits dormant until a local network appears, which on a cruise means the morning of the first port call.
05Is there a Simbye discount code?+
Yes — ESM15. 15% off all Simbye plans Apply it at checkout and confirm the total actually drops before you pay — an expired code that silently does nothing is the normal failure here, not a rejected one.
Compare Simbye with
- Red Bull MOBILE eSIM — Telenor Maritime exclusive consumer partner since April 2024, covering 150+ named vessels that the Cellular at Sea providers largely miss — AIDA, Costa, P&O, Cunard, TUI/Marella and the Stena, DFDS, Brittany Ferries and Color Line fleets. Its 250 MB plan at EUR 5 is the cheapest way onto a ship network anywhere; the allowances are correspondingly small.
- abesteSIM — A value eSIM retailer with a documented partner API and wide country coverage. Port-day plans; zero cruise SKUs.
- AlpineSIM — A Europe-focused eSIM seller with generous multi-country packs across the EU. Strong value for Mediterranean, Baltic and Norwegian fjord port days; no at-sea coverage.
- Amigo eSIM — A broad-catalog eSIM retailer covering single countries and regions worldwide, with an affiliate API we ingest. Useful for port days; its catalog contains no cruise or maritime SKUs.