Last updated: July 7, 2026
If you're travelling to Greece from the US, UK, Canada, Australia — or anywhere outside the EU — staying connected works a little differently than it does for EU visitors. EU travellers get free roaming in Greece; you don't. That means either paying expensive home-carrier roaming, hunting for a SIM at the airport, or setting up an eSIM before you fly.
This guide is for the non-EU visitor: how to stay connected in Greece without bill shock, what coverage is really like on the islands, and how to set it all up before you land in Athens, Santorini, or Crete.
→ Get Your Greece eSIM from €3.49
Does an eSIM work in Greece?
Yes — an eSIM works perfectly in Greece, and for visitors from outside the EU it's usually the cheapest and easiest option. You install it before you fly, land with data already working, and skip the airport SIM kiosk. Greece has excellent 4G/5G coverage, no internet restrictions, and no registration hoops. All your apps — WhatsApp, Google Maps, Instagram, rideshare — work freely without a VPN.
Why Non-EU Visitors Need an eSIM (When EU Travellers Don't)
Here's the key thing that separates your trip from an EU traveller's. Within the EU, roaming is free — a German or French visitor uses their home plan in Greece at no extra cost. But if you're coming from outside the EU, that free roaming doesn't apply to you:
- US travellers — American carriers typically charge around $10–12 per day for international roaming. A 10-day Greece trip could cost $100+ just in roaming.
- UK travellers — this catches a lot of people out. Since Brexit, the UK is no longer in the EU roaming zone. Many UK carriers that once offered free EU roaming now charge daily fees for Greece — often £2–6 per day. Check your specific plan, because it may have changed.
- Canadian and Australian travellers — home-carrier roaming is among the most expensive in the world, frequently $10–15 per day.
An eSIM sidesteps all of it. You pay a flat, low price for the data you need, in advance, and you're connected the moment you land — no per-day roaming meter running.
Which Network and Coverage in Greece
Greece has strong mobile infrastructure, and the main networks (Cosmote, Vodafone) provide excellent coverage across the mainland and the major islands. Here's the honest breakdown:
| Location | Coverage Quality |
|---|---|
| Athens & Thessaloniki | Excellent 4G/5G |
| Santorini, Mykonos, Crete, Rhodes | Strong 4G in tourist areas |
| Smaller islands (town centres) | Good 4G |
| Remote beaches & mountain interiors | Variable |
| Ferries between islands | Signal drops offshore |
Cosmote (a Deutsche Telekom subsidiary) has the most extensive island coverage of any Greek carrier, which matters if you're island-hopping. For the vast majority of trips — Athens, the popular Cyclades, Crete, the Dodecanese — coverage is reliable.
Island-Hopping: The Coverage Reality Nobody Explains
This is where generic Greece eSIM guides fall short, so here's the honest picture.
Greece has over 200 inhabited islands, and the popular ones — Santorini, Mykonos, Crete, Rhodes, Corfu, Naxos, Paros — all have good 4G/5G in their towns and tourist areas. Where coverage gets patchy:
- On the ferry between islands. Signal typically drops about 15km offshore and returns as you approach the next island. This is normal for every carrier — download offline Google Maps for each island before you board.
- Remote beaches and mountain interiors. The famous beaches and hiking trails away from the towns can have weaker signal. Download offline maps if you're heading somewhere remote.
- Very small, less-visited islands. Islands like Ikaria or the tiny Cyclades may have 3G rather than 5G — fine for maps and messaging, slower for streaming.
One important tip near the Turkish coast: islands like Rhodes, Kos, and Samos sit very close to Turkey. Occasionally your phone will try to connect to a Turkish tower across the water, which would trigger roaming charges. If you notice this, set your network selection to manual and choose the Greek network (Cosmote).
Your Options for Internet in Greece
1. Home-carrier roaming
Easiest, but for non-EU visitors it's the most expensive — often $10–15 per day, which adds up fast on a week-plus trip.
2. A SIM at Athens airport
Cosmote and Vodafone kiosks sell tourist SIMs, but they cost €25–35, require passport registration, and mean queuing after a long flight. You also get a separate number to manage.
3. An eSIM set up before you fly
One QR code, installed at home, connected the moment you land in Athens or your island airport. Your home number stays active for calls and texts; the eSIM handles data. No kiosk, no registration, no queue.
How Much Data Do You Need for Greece?
| Trip Type | Duration | Recommended Plan |
|---|---|---|
| Short city break (Athens) | 3–5 days | 3GB |
| Standard island trip | 7–10 days | 5–10GB |
| Extended island-hopping | 14+ days | 10–20GB |
| Heavy user (streaming, tethering) | Any | Unlimited |
Island-hoppers should lean toward more data — you'll rely on maps, ferry apps, and booking platforms constantly, and you'll be away from reliable WiFi more than a city traveller.
Step-by-Step: Setting Up Your Greece eSIM
Before you fly:
- Go to ovosim.com/esim/greece and choose your plan
- Pay with your home country card
- Save the QR code screenshot
- Settings → Cellular → Add eSIM → scan the QR code
- Label it "Greece Data" and set it as secondary (your home SIM stays primary for your number)
- Keep the eSIM line switched off until you land
On arrival:
- Turn on the Greece eSIM line
- Enable Data Roaming for that line
- Your phone connects to the local network and you're online
Frequently Asked Questions
Does an eSIM work in Greece?
Yes. Greece has excellent 4G/5G coverage and no restrictions on eSIMs. Install before you fly, land connected, and use all apps freely without a VPN.
I'm from the UK — do I need an eSIM for Greece after Brexit?
Possibly. Since Brexit, the UK is no longer in the EU roaming zone, and many UK carriers now charge daily roaming fees for Greece. Check your specific plan — if it charges for Greece, an eSIM is usually much cheaper for a trip of more than a couple of days.
I'm from the US, Canada, or Australia — is an eSIM cheaper than roaming?
Almost always. Home-carrier roaming for these countries typically runs $10–15 per day. A Greece eSIM is a flat, low price for the whole trip, so it's far cheaper for anything beyond a day or two.
Which network does the OVOSIM Greece eSIM use?
It connects to Greece's major networks including Cosmote, which has the best island coverage of any Greek carrier — important for island-hopping trips.
Does the eSIM work on Santorini, Mykonos, and Crete?
Yes — all the major islands have strong 4G coverage in their towns and tourist areas. Signal drops on the open water during ferry crossings, so download offline maps for each island before boarding.
Will I lose signal on the ferries?
Briefly, yes. Signal drops about 15km offshore and returns as you approach the next island. This is normal for all carriers — download offline Google Maps before your ferry.
Can I keep my home number?
Yes. Your home SIM stays in the phone and your number stays active for calls and texts. The eSIM only handles data.
The Bottom Line
Greece is one of the world's great destinations, and for visitors from outside the EU, an eSIM is the simplest way to stay connected without paying expensive roaming. You avoid the per-day roaming meter, skip the airport SIM queue, and land connected — whether you're in Athens or hopping between the islands.
Key takeaways:
- EU visitors get free roaming in Greece; visitors from the US, UK, Canada, and Australia do not
- UK travellers: since Brexit, your plan may now charge roaming in Greece — check it
- Coverage is excellent in Athens and the main islands; signal drops on ferries and remote areas
- No VPN needed — all apps work freely
- OVOSIM Greece plans start from €3.49
→ Get Your Greece eSIM from €3.49
Continuing your trip? See our plans for Turkey, Italy, and the wider Balkans, or read the full Greece eSIM guide.