Please send us your suggestions for Greece and help others to get a reasonable SIM-card for their next trip!
There are 3 network operators in Greece: Cosmote, Vodafone and Wind. They use European standard frequency bands. Best coverage is provided by Cosmote.
You always have to verify your identity with e.g. a passport to get a SIM card.
Be aware, that local dealers may try to sell you unnecessary upgrades.
International offers and reseller with international shipping: