Is Kos good for getting around by bike with online maps?

Very. Kos Town and the surrounding coast are famously flat with dedicated cycle lanes, and 4G/5G is strong there, so live navigation to Tigaki, Marmari or the Asklepion works smoothly.

Can I use the same eSIM on day trips to Kalymnos or Nisyros?

On those Greek islands, yes - it's one national plan covering all of Greece. On a Bodrum day trip to Turkey, though, it won't work, as this eSIM only carries Greek networks.

Kos eSIM.

Cycle Kos Town's waterfront, soak in Therma's hot springs and hop toward Kalymnos, fully connected.

from £1.12/day · unlimited dataAll of Greece →

Unlimited data5G where availableInstant QR by emailKeep your number

1 · How many days?

10 daysOther:days

2 · How much data?

3GBBest pricevalid 15 days£6.08£0.61/day

Cheapest plan covering your trip: 3GB, valid 15 days.

Travellers (one eSIM each)

1 × 3GB (valid 15 days) · 10-day trip£6.08

Every plan: QR by email in minutes · data-only, keep your number · days start on first connection · top up anytime · the total shown is the whole bill. What's included →

Good to know in Kos

Kos lies just miles off Turkey, so near the east coast and Kefalos your phone may drift onto a Turkish tower where your Greece eSIM has no data - set network selection to manual and pick Cosmote, Vodafone or Nova.

Best time to visit Kos

May to October suits Kos, with warm seas and calm crossings; visit in late spring or September for gentler heat and thinner crowds at Tigaki and Kefalos.

Does an eSIM work in Kos?

Yes — the Greece eSIM works across Kos wherever its partner networks have signal. Kos Town, Kardamena and Tigaki carry strong 4G with growing 5G, while signal eases in the Dikeos mountains around Zia and can wander onto Turkish networks along the eastern coast facing Bodrum.

Your guide to Kos

Kos eSIM: your local data guide.

Kos packs the ancient Asklepion ruins, the mountain village of Zia, seaside Therma hot springs and long sandy stretches at Tigaki and Kefalos into one easy island. A Kos eSIM keeps your rental-bike routes, ferry times to Kalymnos and Nisyros, and Bodrum day-trip bookings live wherever you roam.

One eSIM for Kos and all of Greece. It's the national Greece eSIM — from £1.12/day with unlimited data, working the same in Kos as it does the moment you leave it.

Landing at Kos - Hippocrates (KGS)?

Install the QR at home, then switch the eSIM on as you taxi in — you're online before you reach the arrivals hall.

Kos eSIM pricingbest-value plan · per day

Days

Per day

Total

Saving

3 days1GB

£0.85

£2.53

—

5 days1GB

£0.51

£2.53

−40%

7 days1GB

£0.36

£2.53

−57%

10 days3GBPopular

£0.61

£6.08

−28%

15 days3GB

£0.41

£6.08

−52%

30 days3GB

£0.20

£6.08

−76%

Unlimited plans7 days £18.28·15 days £25.39·30 days £33.52

Each trip length shows the best-value plan that covers it. Total always shown before you pay.

Across the region

Where you'll lean on data in Kos.

Kos Town

5G and strong 4G along the harbour, castle and the flat cycle lanes everyone rides here.

Zia (Mount Dikeos)

The sunset-view village holds decent 4G, though signal softens on the mountain road climbing up.

Kefalos

Reliable data across the southwest resorts and Paradise Beach bars, easing at the quieter coves.

Mastichari

Dependable coverage at the ferry harbour for boats to Kalymnos and Pserimos.

The practical bit

Getting around Kos on your eSIM.

Apps you'll want online in Kos

Ferryhopper— Book fast ferries and catamarans to Kalymnos, Nisyros, Rhodes and beyond, with live timetables.
Welcome Pickups— Arrange English-speaking transfers from Kos airport to Kardamena, Tigaki or Kos Town.
Google Maps— Excellent for the island's flat cycle routes and driving to Zia or Kefalos; save offline maps for the hills.
FREE NOW— Greece's taxi app has limited island reach, so many Kos taxis are still booked at ranks or by phone.

How long to stay in Kos

A typical Kos stay runs three to seven nights, blending beach time at Tigaki and Kefalos with the Asklepion, Zia sunsets and a ferry hop to a neighbouring island.

How much data for Kos

A balanced 3-5 GB handles a week of cycle-route navigation, ferry bookings and social sharing; pick Unlimited if you plan to stream or hotspot from your Kardamena or Kos Town base.

Coverage in Kos

Kos Town, Kardamena and Tigaki carry strong 4G with growing 5G, while signal eases in the Dikeos mountains around Zia and can wander onto Turkish networks along the eastern coast facing Bodrum.

Where you're headed

Discover Kos.

Sailboats moored at a scenic pier in Kos, Greece under a bright summer sky.

A serene view of a sailboat moored at a pier in Kos, Greece, under a clear blue sky.

A serene view of fishing boats moored in the picturesque harbor of Kos, Greece, under a bright summer sky.

Beautiful historic stone building with lush garden under a clear blue sky, capturing Mediterranean architecture.

The short version.

A travel eSIM is data only. It sits next to your home SIM, so your number, texts and WhatsApp carry on as normal. Pick unlimited, priced per day, or a fixed bundle of GB if it's mostly maps and messages. Install it on Wi-Fi before you fly — the days only start once it first connects in Kos, and it finds a partner network on its own.

Coverage in Greece.

5G in supported areas on compatible devices; 4G more widely available

Connected · 5G

Cosmote
Vodafone
Nova

Before you fly

Kos eSIM questions, answered.

Kos sits close to Turkey, so towers there can be stronger near the coast. Switch network selection from automatic to manual in your settings and choose a Greek carrier - Cosmote, Vodafone or Nova - so your eSIM data keeps working.