Staying Connected in Athens

No surcharge, at all

Article 4(1): roaming providers "shall not levy any surcharge in addition to the domestic retail price" on roaming customers in any Member State for regulated calls made or received, for SMS sent, or for data used — "nor shall they levy any general charge to enable the terminal equipment or service to be used abroad". Your Greek week costs what your home week costs. Fair-use limits on very large data allowances still exist, so a genuinely unlimited home plan may be capped abroad; check the number before you rely on tethering all week.

And the clause almost nobody knows

Article 4(2) goes further: roaming may not be offered "under conditions that are less advantageous than those offered domestically, in particular in terms of the quality of service … where the same generation of mobile communications networks and technologies are available". In plain terms, if you have 5G at home you are entitled to 5G in Athens wherever Greek 5G exists. An operator that silently drops you to 4G abroad is not complying, and that is worth a complaint rather than a shrug.

How long this lasts

The current regulation runs with the wholesale caps frozen at €0.019 a minute and €0.003 an SMS until 30 June 2032, so nothing about this changes within the life of any trip you are planning now.

An eSIM, bought before you fly

If your handset supports eSIM — every recent iPhone and most recent Android flagships do — a Greek or European data eSIM is bought online in five minutes, installed before you leave, and connects the moment you land. It keeps your own number live for calls and texts on your primary SIM while the data runs on the second line. For a week in Athens this is nearly always the cheapest and least troublesome route.

A physical prepaid SIM in Athens

Cosmote, Vodafone and Nova all sell prepaid SIMs, and there are shops at the airport and all over the centre. Take your passport: Greek prepaid connections are registered to an identity document. We say this from practice rather than from a citation — neither Cosmote's nor Vodafone's English pages publish the requirement, and the regulator's English site carries nothing usable on it, so we are not going to pretend to a legal reference we could not read.

Your own operator's roaming bundle

The expensive option, and the only one that needs no action. If you take it, at least check the daily rate before you land rather than after — a week of unmanaged non-EU roaming is the single largest avoidable bill on a European trip.

The reliable ones

• The Acropolis archaeological site lists wifi among its amenities, alongside the café, shop and WCs.
• Athens International Airport, throughout, which matters most on the way out.
• The SNFCC — free wifi, free public computers and reading rooms open 09:00 to midnight, and a free shuttle from Syntagma to get there. It is on the free things page.
• Cafés, universally. A €2.50 Greek coffee buys a table and a password for as long as you want it; this is the normal way to work in Athens.

The metro is the gap

Coverage in the deeper sections of Lines 2 and 3 is patchy to absent, and the airport run spends a long time underground at the city end. Nothing about this is unusual, but it is the moment you are most likely to want a map. Which leads to the one preparation worth making.

Download the map and the ticket

Save central Athens for offline use in your map app, and screenshot or download your Acropolis ticket rather than trusting a signal at the gate — the queue at the west entrance is not where you want to discover you have no data. If you lose the file entirely, the ticket lives in your seller account: see ticket recovery.

And save two numbers

112 for emergencies, and your accommodation's own number. Nothing else is needed. Safety and scams has the short list of what actually goes wrong here, and none of it is solved by an app.

Free, from anything

112 is the single European emergency number, free of charge, in Greece and across the Union. It reaches every service that needs to be involved at once and can locate the caller. It works from a phone with no credit, and from a phone whose plan has run out.

EU law also requires your operator to send you an SMS on arrival telling you exactly this, with a link to a page describing the local ways of reaching emergency services — if you got that message and ignored it, that is what it was.

And it calls you

Greece uses 112 for mass alerts: wildfire warnings, extreme heat and other hazards arrive as a loud message to every phone in the affected area, in Greek and English. In August this is a normal thing to receive. Athens in summer explains what the heat warnings mean for a day's plan.