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How eSIMs Work on Cruise Ships and During Flights

Arne Maier

eSIM technology offers travelers a convenient and flexible solution for mobile communication, whether on land, sea, or air. But how do eSIMs function on cruise ships or during flights? In this article, we explain the specifics, challenges, and tips for using eSIMs in these unique situations.

eSIMs on Cruise Ships

How Does the Connection Work?

Cruise ships often rely on maritime satellite communication to provide passengers with internet and mobile services. At sea, the signal is transmitted via satellites to the ship. Once the ship is near a port or coastal region, regular mobile networks can be used.

Can You Use an eSIM?

Yes, eSIMs can be used onboard, but with limitations:

  • Maritime Networks: Most cruise ships offer special maritime networks, which typically incur high roaming charges. eSIMs are not directly connected to these maritime networks unless the provider has specific agreements.
  • Coastal Areas: When the ship comes within range of a terrestrial mobile network, the eSIM will automatically switch to the local provider if a compatible plan is activated.
Tips for Using eSIMs on Cruise Ships
  • Activate Local eSIM Plans: Once the ship docks at a port, a local eSIM plan can be used to avoid the high costs of maritime networks.
  • Use Wi-Fi: Many cruise ships offer Wi-Fi packages. Connecting via Wi-Fi is often cheaper than using mobile data networks.
  • Check Ahead: Verify the rates and conditions of your eSIM provider for maritime roaming services.

eSIMs During Flights

How Does the Connection Work?

During flights, mobile communication relies on specialized onboard networks that use satellite communication. These networks usually offer Wi-Fi services, allowing passengers to access the internet and messaging. Direct mobile services (such as calling or SMS) are typically disabled.

Can You Use an eSIM?

The use of an eSIM during flights is limited:

  • No Mobile Networks: As terrestrial mobile networks are not reachable at high altitudes, the eSIM cannot be used as usual.
  • Wi-Fi Services: Many airlines offer paid or free Wi-Fi packages. eSIM-enabled devices can connect to these Wi-Fi services to communicate via VoIP apps or internet-based messaging platforms.
Tips for Using eSIMs on Flights
  • Enable Airplane Mode: Turn on airplane mode and connect to the aircraft’s Wi-Fi to avoid accidental roaming charges.
  • Use Communication Apps: Apps like WhatsApp, Skype, or Zoom can be used via onboard Wi-Fi.
  • Download Offline Content: Since onboard Wi-Fi can be expensive or slow, it’s a good idea to download important content before your flight.

Summary: What Travelers Should Know

  • On cruise ships, eSIM usage is limited, especially at sea. Local plans at ports or onboard Wi-Fi packages are the best alternatives.
  • On flights, eSIMs cannot be used for mobile services, but onboard Wi-Fi allows limited internet communication.
  • Research the costs and availability of eSIM services at your destination, as well as the Wi-Fi offerings of airlines and cruise ships.

With proper preparation, eSIMs can be a valuable addition to your travel experience, even at sea or in the air!

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