Simbye: does it work on a cruise?
Short answer
Simbye is a travel eSIM retailer with data-only and phone-number plans for more than 190 countries. You can buy through its iOS and Android app or its website. The catalogue runs from cheap single-country bundles to a custom builder inside the app. That builder can cover up to ten countries in one profile. Every unused plan comes with a 30-day refund guarantee. It's a port-day tool for a cruise. There's no plan built for the ship itself.
Prices last confirmed
Simbye discount codes
Overview
Simbye says it was founded by travellers, for travellers. It sells eSIM data plans for more than 190 countries. The company reports more than 300,000 customers. Its App Store rating sits around 4.8, from over 12,000 reviews. Coverage runs on a network of more than 700 mobile partners worldwide. You will find single-country plans, multi-country regional bundles for Europe, Asia and beyond, and worldwide packages.
Simbye also sells premium packages with a real phone number. Codes include +1, +33, +44 and +66. Those give you calls and SMS instead of just data. Its Custom eSIM feature is exclusive to the app. There, you can build a data allowance from 5GB up to 50GB. Split it across as many as ten countries in one profile. It stays active for anywhere from 30 to 365 days. That flexibility puts Simbye closer to a build-your-own-bundle model. Most providers just sell fixed single-country or single-region plans.
Coverage on a cruise
Simbye's eSIMs run on land-based mobile networks in each country it covers. Say you book a Caribbean or Mediterranean cruise. Your plan connects while the ship is docked in a covered port. It uses the same local towers your phone would pick up after landing normally. That signal fades once the ship pulls away from the coast. In practice that is about 12 nautical miles from land. There's no shore tower left in range at that point. Simbye has no network of its own at sea. Plan on connectivity only for the hours you spend ashore at each port. You'll need a separate at-sea option for the sailing days in between.
Plans and pricing
These prices come from simbye.com, checked in September 2026. Single-country plans start from about €1.95 for Turkey and roughly €2.95 for Japan. Regional bundles begin around €23.95 for Europe. Plans with a real phone number cost more. A USA plan with a number starts near €23.95. A worldwide plan with calling starts around €29.95. Validity across the catalogue runs from one month up to a full year. It depends on the plan you pick.
The Custom eSIM builder is only in the app. It lets you set a data allowance from 5GB to 50GB. You can spread that across up to ten countries in one profile. Choose a validity window between 30 and 365 days. That suits a multi-country cruise itinerary better than buying one plan per port. You can top up an already-installed eSIM with extra data, no contract needed. Every purchase earns 5% cashback toward a future trip. That's on top of the 30-day refund guarantee on unused plans.
Features
| 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 |
Setup and activation
You can buy a Simbye plan through the app or on simbye.com. It arrives as a QR code by email. Scan it, and it installs in about 60 seconds. You only need wi-fi for that first setup step. Simbye's own advice is to install it before you leave, on your home or office network. Then leave the eSIM sitting inactive until you need it at the first port.
Strengths and limits
- 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.
Verdict
Simbye is a solid pick if you're sailing a multi-country itinerary. Its Custom eSIM builder can bundle several ports into one profile. That beats buying one plan per stop. It has nothing for the open ocean between ports, though. If you want that flexible builder, you'll need the app rather than the website.
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?+
You get to choose your own data amount, from 5GB up to 50GB. Spread it across up to ten countries in a single eSIM profile. The validity window is flexible too, anywhere from 30 to 365 days. This builder only lives inside the Simbye app, not on the website.
03Do Simbye plans include a working phone number for calls?+
Only the premium plans do. Standard plans are data-only, nothing more. The premium packages add a real number in codes like +1, +33, +44 or +66. Those cost more than the equivalent data-only plan for the same country.
04How quickly can a Simbye eSIM be used after buying it?+
Simbye says the whole process takes about 60 seconds after you scan the QR code. A wi-fi connection is only needed for that first step. Once it's done, the eSIM finds a local network the moment one comes into range.
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.