Know Before You Go
Staying Connected in Athens: SIM Cards, eSIMs & WiFi
Getting online in Athens is easy and cheap — here's the simplest option for most visitors, and when the alternatives make sense.
Greece has good, reasonably priced mobile coverage in and around Athens, and getting connected is one of the more straightforward pieces of trip logistics — several genuinely easy options exist depending on how much you want to plan ahead.
eSIMs — the easiest option for most visitors
If your phone supports eSIM (most phones from the last several years do), a travel eSIM purchased through one of the established apps before you fly is the simplest option: it activates the moment you land, requires no physical shop visit, and typically costs less than a similar package from a home carrier's roaming add-on. Worth setting up a day or two before departure so it's ready the moment you land.
Physical SIM cards
If your phone is older or you'd rather not deal with an eSIM app, physical SIM cards from Greek carriers are sold at kiosks in the airport arrivals hall and at phone shops throughout the city, usually requiring your passport for registration. This needs an unlocked phone and a few minutes at a counter, but gives you a local number and often a better data allowance for the price than a travel eSIM.
WiFi
Most hotels, cafés and restaurants in central Athens offer free WiFi, generally reliable enough for maps and messaging without needing mobile data at all if you're mainly moving between accommodation and sit-down meals. It's less reliable as your only option if you're relying on real-time navigation while walking between sights, which is where a SIM or eSIM genuinely earns its cost.
Do you actually need it?
If your trip is short and concentrated in the tourist core, hotel and café WiFi alone can realistically cover most needs. For anything involving day trips, the metro, or real-time navigation on foot, mobile data is worth the small cost.