The quick verdict
An eSIM is the simplest way to island-hop connected, and a Europe plan covers Greece.
Get an eSIM for Greece ↗
Airalo sells a local Greece eSIM — pick it on their store. Some links here are partner links: if you buy through them, Diaries of Travels may earn a commission at no extra cost to you. We only point to a service when it matches the advice on the page, and a commission never changes what we recommend. Disclosure →
What to expect
- Coverage
- Greece has good coverage in Athens and on the main islands, with weaker signal on small or remote isles.
- Networks
- Runs on Cosmote (widest island reach), Vodafone or Nova.
- Data for a week
- 5 GB for a week suits a mix of Athens and a couple of islands.
- Good to know
- Cosmote-based plans reach the smaller Cyclades and Dodecanese best — worth it if you're going beyond Santorini and Mykonos.
eSIM, local SIM or roaming?
For most trips to Greece, an eSIM is the simplest choice: you buy and install it before you fly, then land already online. A local SIM can be cheaper for very long stays, but means queuing at the airport and sometimes registering ID. Your home carrier's roaming is the most expensive option and worth avoiding unless your plan already includes Greece.
How to set up your Greece eSIM
- Check your phone. It needs to be eSIM-compatible and carrier-unlocked. Most phones from the last few years qualify.
- Buy the Greece eSIM before you fly, while you still have Wi-Fi at home.
- Install it over Wi-Fi. A one-tap install or a QR code adds it as a second line — your home SIM stays in place.
- Land and switch on. Turn on data roaming for the eSIM line only. It connects to a local network automatically.
- Keep your number. Leave your home SIM active for calls and texts, and use the eSIM for data.
One honest caveat
Coverage, plans and prices change, and networks vary by region within Greece. Always download offline maps for anywhere remote, and check your phone supports eSIM before you buy.