Can I expect my SouthESIM to have a signal on Greek ferries when traveling between islands?

For most of your journey on popular Greek ferry routes, your SouthESIM will keep you connected! Ferries traveling between major islands like from Piraeus to Mykonos or Santorini generally have good 4G coverage. While you might experience brief signal drops in very deep open waters, you'll typically have connectivity for the vast majority of your trip. This means you can continue to browse, share photos, or plan your next island adventure almost seamlessly while enjoying the beautiful Aegean Sea views.