OHAYU eSIM
Cosmote & Vodafone 5G · nationwide

eSIM for Mykonos

Install before you travel. One plan for all of Greece, Mykonos and onward islands included.

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Product info

Mykonos eSIM plans

You can install your eSIM before the trip and activate it when you arrive in Greece. Validity starts after eSIM activation.

Plan details

Operators
Phone number / SMSData-only · no local number or SMS. VoIP calls work fine with your home number.
ActivationInstall now, activate anytime within 30 days. Validity starts on the first connection to a Greece network.
Reinstallation5 reinstalls on the same device
Speed
Hotspot / tetheringYes · share your connection with other devices
Top-upAdd data anytime in-app · same eSIM

How much mobile data you need

What's the best eSIM for Mykonos?

  • A long weekend – 3 GB

    Maps, bookings, beach clubs.

  • A week in season – 10 GB

    Photos, video, a lot of uploading.

  • Cyclades hopping – 20 GB

    Mykonos, Paros, Santorini.

  • A longer stay – Unlimited

    Tethering from a villa.

Coverage and network

Coverage town, beaches and the season

Greece mobile networks

Mykonos is 105 square kilometres with a permanent population of about 10,000 and summer visitor numbers many times that. The network is built for the peak, so coverage across the island is good - what changes between May and August is how much of it is left for you.

CosmoteVodafone

Speedtest Global Index · Mobile · Greece · June 2026

Download

145.06 Mbps

Upload

15.74 Mbps

Latency

20 ms

Global rank

#28 of 98

Mykonos, specifically

  • Mykonos Town and Little Venice: Good signal, though the whitewashed lanes were designed to confuse pirates and they will confuse your map too - GPS drift in the narrow alleys is common and not a data problem.
  • The beach clubs: Paradise, Super Paradise, Scorpios and Nammos all put large crowds on one stretch of sand with a single cell nearby. Afternoon and evening uploads slow noticeably in July and August.
  • Ano Mera and the interior: Quieter and covered. The island is small enough that there is nowhere genuinely remote.
  • The old and new ports: Both covered. Worth having data at the new port, where the ferry and cruise transfers are a scrum.
  • Delos: The archaeological island is a 30-minute boat trip and coverage there is thin - it is uninhabited apart from the site staff. Take the map with you.

Mykonos and the rest of Greece

The same plan covers all of Greece, so a Cyclades run through Paros, Naxos and Santorini needs no second purchase.

Mykonos TownOrnosPlatis GialosAno MeraDelosParos+ all of Greece

How to install eSIM

Connected in 3 steps

  1. 01

    Buy before you fly

    Choose your data plan before your trip.

    ohayu app buy before you fly for Mykonos eSIM
  2. 02

    Download & install

    Log in to your account, tap your eSIM, and follow the on-screen instructions.

    ohayu app download & install for Mykonos eSIM
  3. 03

    Land & activate

    Activate when you arrive in Greece. Turn on roaming for the eSIM and it connects to a local network.

    ohayu app land & activate for Mykonos eSIM

Before you buy, make sure your phone supports eSIM — see Ohayu compatible devices list or dial *#06#. It's a free request to your phone's settings. If you see the EID number — your phone is eSIM-compatible.

Arriving on Mykonos

Airport Wi-Fi at JMK

Mykonos airport runs the Fraport network, free after a browser welcome page. It is a small terminal that handles a lot of summer traffic, so the Wi-Fi is busiest exactly when your flight lands.

Mykonos Airport (JMK)
Fraport-Free - free, welcome page in the browser
New Port (Tourlos)
Ferry and cruise arrivals - no reliable public network

Side by side

Mykonos eSIM Comparison

OhayuHolaflySailyAiralo
Unlimited optionYesYesCapped dailyNo
Hotspot / tetheringAll plansDaily capYesYes
Support24/7 web & app24/7 web & app24/7 app only24/7 web & app
Device compatibility checkAutoManualManualManual
eSIM re-installationUp to 5xUp to 3xLimitedNot allowed

Indicative comparison based on publicly listed Greece plans as of August 2026. Competitor pricing and policies change - check their sites for current terms.

Frequently asked questions

Coverage

Where to buy a SIM card on Mykonos?

A handful of franchise outlets in Mykonos Town, with summer hours. Passport needed, as everywhere in Greece. Prices on the island run above the mainland for most things, SIMs included.

Why does my map wander in Mykonos Town?

That is GPS rather than your data connection. The lanes are deliberately narrow and winding, and the whitewashed walls bounce the satellite signal around, so the blue dot jumps between alleys. Having a working connection does not fix it - most people end up navigating by landmark.

Does the plan cover the boat to Delos?

The crossing is short and you will hold signal for much of it, but Delos itself is sparsely covered - it is an uninhabited archaeological site. Download what you want to read about the ruins before you go.

Troubleshooting

eSIM not working on Mykonos?

At a packed beach club in August, slow is load rather than a fault. If the map is drifting in the old town, that is GPS, not data. Otherwise set Ohayu as the data line with roaming on and toggle Airplane mode. Chat and support@ohayu.com are open 24/7.

From $9.49

Arrive on Mykonos already connected

Install before you travel, ready at JMK.

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