Greece has solid coverage in Athens and on its major tourist islands. With 227 inhabited islands, coverage varies enormously once you leave the main ferry routes.
Greece
Helleniké Demokratía
7.8
★★★★★★★
Coverage score
// Why get an eSIM
Saily vs. roaming on your home SIM
| SailyRECOMMENDED | Roaming | |
|---|---|---|
| Setup | 2 min, pre-trip | Automatic |
| Cost | Flat, upfront | Per-day, uncapped |
| Speed | Full local speed | Often throttled |
| Local number | No (data-only) | Keeps your number |
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⚡ POWER TIP
Cosmote has the broadest coverage across Greece including on less-visited islands. If going anywhere off the main tourist island circuit, Cosmote gives the best chance of staying connected. In Athens and on the main islands, both networks perform well.
✅ VPN FULLY LEGAL
No restrictions on VPN use in Greece. The internet is open and unrestricted. All standard apps and streaming services work normally throughout the country.
⏱ Facts verified July 2026 • Always confirm before travel
// Network operators
Cosmote
Greece's largest carrier with the broadest island and rural coverage. Excellent 4G in Athens, Thessaloniki, and all major tourist islands. eSIM supported. The recommended choice for travellers heading to less-visited islands.
Vodafone Greece
Strong competitor with excellent coverage on the main tourist islands and in Athens. Good 5G in urban areas. eSIM supported. A solid alternative for travellers sticking to Santorini, Mykonos, Crete, and Rhodes.
// What to expect
Athens and main tourist islands
Athens, Thessaloniki, Santorini, Mykonos, Crete main towns, Rhodes, Corfu, and Zakynthos all have reliable 4G coverage. The Athens Metro has coverage throughout. Major ferry ports are generally well covered.
Remote islands and mainland mountains
Greece's 227 inhabited islands include many with very limited or no coverage away from their main settlements. Remote Aegean islands, parts of the Peloponnese mountains, and inland Epirus can have significant gaps.
💡 Island hopping and remote islands
If your trip involves island hopping beyond the main Cyclades and Ionian circuits, research coverage for your specific islands before travelling. Download offline maps, ferry schedules, and emergency contacts before leaving the mainland or a major hub island.
// Practical tips
Emergency number: 112 or 100/199/166
Greece uses 112 as the EU emergency number, plus 100 (police), 199 (fire), and 166 (ambulance). All work without a plan. On remote islands, response times can be significantly longer.
Ferry schedules and booking
Greek island ferries are operated by multiple companies and schedules change seasonally. Use the Ferryhopper or OpenSeas apps to search and book — both work with your eSIM data. Download your tickets offline before boarding.
Weather and wind alerts
The Aegean's Meltemi winds can cancel ferries with little notice during July and August. Keep your eSIM active and check Windy or the Poseidon weather app before any island-hopping day.
// Travel security
Protect your connection in Greece
Greek hotel, café, and beach bar WiFi carry standard public network risks. Use your eSIM data for banking and sensitive logins. A VPN is good practice and completely unrestricted.
Alternative ID for sign-ups
Greek booking platforms, activity operators, and tourist services collect personal data. A disposable email and identity keeps your real information private after your trip.
Surfshark Alternative ID
Generate a disposable identity for every app you sign up to abroad. Your real details stay private.