Will CoreESIM maintain a signal on inter-island ferries in Greece?

CoreESIM connectivity on inter-island ferry routes in Greece, such as those operated by Blue Star Ferries or Seajets, is generally consistent for the majority of the journey. The Aegean Sea, particularly along well-trafficked routes connecting islands like Piraeus, Mykonos, and Santorini, benefits from widespread coastal cellular infrastructure. While signal strength may fluctuate or briefly drop in deep open waters far from land, you can typically expect reliable 4G service for most of your travel time, facilitating continued use of data-dependent applications.