Greece's most reliable travel eSIM. Instant 5G on Cosmote and Vodafone. Works across the Cyclades, Dodecanese, and Ionian islands.
The best eSIM for Greece is one that works instantly, avoids roaming fees, and doesn’t require local SIM registration. Ovosim connects you immediately on arrival with reliable 5G coverage.
Greece eSIM Configuration
Instant delivery
⭐ 4.8/5 · 1,200+ verified travelers.
3GB/Day
5GB/Day
2GB/Day
Why smart travelers switch to Ovosim for Greece.
| Feature | OVOSIM | Airalo | Your Carrier Roaming |
|---|---|---|---|
| Cost (Standard Plan) | From €2.99 | €8.99 | $10/day+ |
| Network Speed | 5G / 4G+ Priority | Throttled | Varies |
| Setup | Instant QR | Manual | Automatic |
| Works with foreign cards | Yes | Limited | No |
| Available at airport | Before arrival | Sometimes | No |
Last updated:
No surprises at the airport. Activate instantly on arrival.
Chat with actual humans if something goes wrong.
No hidden fees. No roaming charges. Period.
Ready in 3 simple steps.
Go to Settings > Cellular > Add eSIM and scan the QR code from our website
Name it 'Travel Data'. Set it to 'Secondary' so your main number still works.
When you land, turn on 'Data Roaming' for the eSIM line only.
Greece has over 6,000 islands, of which around 200 are inhabited. Cosmote (T-Mobile subsidiary) has the most extensive island coverage of any Greek carrier, with 4G/5G on all major tourist islands including Santorini, Mykonos, Crete, Rhodes, Corfu, and Zakynthos. Smaller, less-visited islands like Ikaria or Kastellorizo may have 3G only. Ovosim prioritises Cosmote for island coverage, with Vodafone as a fallback.
The Plaka neighbourhood beneath the Acropolis is a maze of narrow pedestrian streets that confuses even frequent visitors. Google Maps is essential. Cosmote has strong 5G signal throughout central Athens, including inside the Acropolis Museum and around the base of the Parthenon. On the Acropolis rock itself, signal can be variable due to stone interference and tourist density.
Santorini receives approximately 2 million tourists annually on an island of 15,000 residents. During peak summer (July–August), the Oia and Fira clifftop villages are saturated with tourists uploading sunset photos simultaneously. Cosmote invests in temporary capacity during peak season, but expect slower speeds during the famous Oia sunset hour (around 20:00–21:00 in summer).
Renting a car is essential for exploring the Peloponnese, inland Crete, and large islands like Lesbos. Vodafone and Cosmote maintain 4G coverage on the E75 (Athens–Thessaloniki) and all major regional highways. Mountain villages in the Peloponnese interior may have 3G only. Always download offline maps for any inland driving route.
Scan the QR code and connect immediately.
Share data with your laptop.
Keep your original number for calls.
OVOSIM offers the best value eSIM for Greece starting at €2.99. It connects to Vodafone for 5G speed.
Plans start from €2.99 for 1GB. There are no hidden fees or roaming charges.
Yes, the eSIM activates instantly upon arrival. You will have 5G data immediately.
Ovosim connects to Cosmote (a T-Mobile subsidiary) and Vodafone Greece. Cosmote has the best island coverage in the Greek archipelago, making it the top choice for island hopping trips.
Yes. All three have excellent 4G/5G Cosmote and Vodafone coverage. Smaller uninhabited or lightly inhabited islands may have 3G only.
Yes, briefly. Signal drops about 15km offshore and returns as you approach the next island. This is normal for all carriers. Download offline Google Maps for each island before boarding your ferry.
Yes. Rhodes, Kos, Samos, and the Dodecanese islands are Greek territory and are fully covered by Cosmote and Vodafone. Note: if your phone accidentally connects to a Turkish tower near the coastline, you may incur roaming charges — ensure manual network selection to Cosmote if this occurs.
Yes. ATH airport tourist SIMs start at €25 and require passport registration. Ovosim starts at €4.99 with no ID required.
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