Whether you get a phone signal on a ferry depends on your distance from the shore. In 2026, most ferries offer excellent signal while near the coast using standard terrestrial towers. However, once the ship moves into open water (typically 12+ miles out), your phone may connect to a maritime satellite network (like Telenor Maritime). Warning: These satellite networks are notoriously expensive and are not included in standard "Roam Like at Home" or international data plans. You will often receive a text message warning you of astronomical rates for calls and data. To avoid "bill shock," it is a peer-to-peer best practice to switch to Flight Mode and use the ship's onboard Wi-Fi for messaging. Many modern ferries now offer high-speed Starlink Wi-Fi, which is much cheaper and more reliable than attempting to use roaming data on a maritime cellular network while crossing the English Channel, the North Sea, or the Mediterranean.