Compare Mobile SIMs in Greece

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What is a mobile SIM in Greece?

A mobile SIM plan in Greece gives you a Greek number plus calls, texts and mobile data on one of the country's networks. Plans split broadly into prepaid (καρτοκινητό), where you top up in advance with no contract, and postpaid (συμβόλαιο), where you pay monthly and usually commit for a term. eSIM support is now common, letting you activate a line digitally without a physical card — handy for travellers arriving in Athens or the islands.

How the Greek market works

Three network operators run the show: Cosmote, part of OTE and generally rated the widest-reaching network; Vodafone Greece; and Nova (formerly Wind and Nova combined under United Group). Each also sells cheaper sub-brands and works with MVNOs that lease their masts. Coverage is strong across the mainland and larger islands, though remote Aegean spots can vary — Cosmote and Vodafone tend to lead on rural and island reach. SIM registration against ID is mandatory under Greek law, so you will show a passport or ταυτότητα when buying.

Benefits

No lock-in on prepaid — καρτοκινητό plans let you switch or stop any month, ideal for students, seasonal workers and visitors.

Big data bundles — postpaid tariffs bundle generous gigabytes, unlimited domestic calls and often free social or streaming data.

EU roaming included — Roam Like At Home means your Greek allowance works across the EU at no extra charge.

eSIM convenience — activate a line instantly on a compatible phone without visiting a store.

Flexible add-ons — bolt on extra data, international minutes or roaming packs for travel outside the EU as needed.

How to choose

Start with how much data you realistically use and whether island or rural coverage matters — check the operator's map for your area. Prepaid suits light or short-term users and anyone avoiding a contract; postpaid rewards heavy users with lower per-gigabyte costs and phone financing. Compare the total after any introductory discount ends, watch for automatic renewal of add-ons, and confirm eSIM support if you want digital activation. Keeping your number is your right — request a portability code from your current provider.

Leading providers in Greece

Cosmote is the market leader, known for the broadest coverage and premium bundles. Vodafone Greece competes hard on data-rich plans and international options. Nova rounds out the trio, often pricing keenly and bundling mobile with home internet and TV. Each operator's discount sub-brands and various MVNOs target budget-conscious and prepaid users.

What it costs

Prepaid starter SIMs and light bundles start from essentially €0 to a few euros, with monthly prepaid packs commonly in the single-digit to low-teens euro range. Postpaid contracts typically run from roughly €10 up to about €35 a month for large or unlimited data tiers, more if a subsidised handset is bundled. Top-up cards are sold in kiosks (περίπτερα), supermarkets and online.

Protections and regulation

The telecoms market is regulated by EETT (the Hellenic Telecommunications and Post Commission), which oversees competition, number portability, and consumer terms, alongside general EU consumer and roaming rules. Providers must publish clear tariff information and honour porting requests. Complaints unresolved by an operator can be escalated to EETT.

Common questions

Can I keep my number when switching? Yes — number portability is a legal right; ask your new provider to arrange it. Do I need ID to buy a SIM? Yes, SIM registration against identity is compulsory in Greece. Will my plan work on the islands? Generally yes on populated islands, but check the coverage map for smaller or remote destinations. Is roaming free in the EU? Yes, your domestic allowance applies across the EU under Roam Like At Home rules.

Mobile SIM Plans in Greece — FAQ