🇬🇷 Destination guide · Updated 2026-07-10
eSIM for Greece — Athens, islands, and ferry days
Ferry tickets, island buses, and tavernas with QR menus. Data before ATH; seas can be beautiful and signal-thin.
Greek island hopping is glorious and logistics-heavy. Ferry changes, bus schedules, and last-minute rooms all live on your phone.
Install an eSIM before Athens so you are not relying on port Wi‑Fi that half the boat is already crushing.
Mainland vs islands
Athens and Thessaloniki have strong coverage. Popular islands (Santorini, Mykonos, Crete hubs) are solid in towns; beaches and mountain interiors vary. Ferry mid-sea signal is often weak — download tickets and maps in port.
Summer peak reality
July–August congestion can slow networks in party towns. Unlimited with fair-use throttle beats a tiny fixed-GB plan that dies on day three of photo uploads.
Practical tips
- Screenshot ferry boarding passes while on café Wi‑Fi in port.
- Offline Google Maps for each island before you sail.
- ATMs and card terminals fail sometimes — maps help you find the next town with both.
FAQ
Will eSIM work on ferries?
Near shore often yes; mid-crossing often no. That is physics, not your eSIM brand. Prepare offline.
Get connected before you land
Unlimited data, fair-use throttle (never cutoff), WhatsApp support.