Athens has 4G LTE coverage across its main tourist and residential districts, with Cosmote and Vodafone Greece as the two primary operators. The Acropolis and the surrounding Plaka district have strong outdoor 4G coverage, though the museum interior can reduce speeds slightly. Monastiraki and Syntagma Square, the heart of central Athens, have dense 4G from both operators. Kolonaki, Exarcheia, and Pangrati have reliable 4G throughout their main streets. The Athens Riviera coastline from Glyfada to Vouliagmeni has consistent 4G. Piraeus port, the main ferry hub for Aegean island travel, has full 4G at the terminal buildings and along the main quays. Eleftherios Venizelos International Airport (ATH) has full 4G coverage across both arrivals and departures. The Athens Metro lines 2 and 3 have 4G at most underground stations, with some deeper tunnel sections losing signal briefly between stops. The Acropolis Museum, the National Archaeological Museum in Exarcheia, and the Benaki Museum all have solid outdoor and entrance-area 4G. The Attica coastline and the ports of Rafina and Lavrion have reliable 4G for ferry departures to the Cyclades and Dodecanese. Lycabettus Hill and Filopappou Hill have outdoor 4G signal at the viewing areas. Suburban areas in Kifisia and Marousi have consistent 4G along their commercial corridors.