How to Stay Connected in Santorini: Best SIM & eSIM Options

Best SIM & eSIM Plans for Travelers in Santorini

Santorini, one of Greece’s most famous islands, is known for its whitewashed buildings, stunning caldera views, and world-class sunsets. Whether you’re exploring Oia, relaxing on Perissa Beach, or sailing around the volcanic islands, staying connected ensures smooth navigation, instant booking, and the ability to share your breathtaking experience in real time.

With limited free Wi-Fi, variable mobile coverage in remote areas, and costly international roaming fees, having a local SIM card or eSIM is the best way to ensure a reliable internet connection. In this guide, we’ll explore the best SIM and eSIM options, mobile network providers, and expert tips to keep you connected in Santorini.

Why Mobile Internet is Essential in Santorini

While many hotels, restaurants, and cafés offer free Wi-Fi, the quality varies significantly, and speeds can be slow during peak tourist seasons. Having your own mobile data ensures you can:

✔ Use GPS for navigation – Essential for finding hidden gems and avoiding crowded tourist routes.
✔ Book ferry tickets, taxis, and excursions – Many reservations require online booking.
✔ Stay updated on weather conditions – Important for planning beach days and boat tours.
✔ Stay in touch – Contact hotels, restaurants, and tour operators on the go.
✔ Share your Santorini experience – Instantly upload stunning photos of Oia’s sunsets and Red Beach!

Overview of Mobile Networks in Santorini

Santorini is covered by Greece’s three main mobile network providers:

1. Cosmote (Best Coverage & Speed)

📶 Coverage: The most reliable network on the island, with strong signals in Fira, Oia, Kamari, and most villages.
📡 Network Technology: 5G in major towns, 4G LTE in most areas.
👍 Best For: Fastest speeds and best coverage across Santorini.

2. Vodafone Greece

📶 Coverage: Good in urban areas and popular beaches, weaker in more remote villages.
📡 Network Technology: 5G in Fira and Oia, 4G elsewhere.
👍 Best For: Affordable prepaid plans with decent coverage.

3. WIND (Nova)

📶 Coverage: Reliable in towns and tourist areas, but weaker in mountainous and remote spots.
📡 Network Technology: 5G available in major towns, 4G elsewhere.
👍 Best For: Budget-friendly data options.

❗ Important Notes:

• Cosmote provides the best overall coverage on Santorini, especially in rural areas.
• Vodafone and WIND offer good service in towns but may have gaps in remote locations.
• 5G is available in Fira and Oia but not widespread across the island yet.

How to Get a SIM Card in Santorini

Buying a local SIM card is easy, but options on the island are limited, so it’s best to get one before arriving.

1. At Greek Airports (Before Traveling to Santorini)

📍 Cosmote, Vodafone, and WIND kiosks are available at Athens and Thessaloniki airports.
✅ Best option for international travelers to get connected immediately.

2. In Santorini (Fira, Oia, and Kamari)

📍 Phone stores, kiosks, and mini-markets in Santorini’s main towns sell prepaid SIM cards.
✅ Best for those who didn’t get a SIM before arriving.

3. Online Prepaid SIMs (Before Your Trip)

📍 Order a prepaid SIM card from Cosmote, Vodafone, or WIND online and have it delivered before your trip.
✅ Best for hassle-free setup before departure.

Best SIM Card Plans for Travelers

Cosmote Prepaid Tourist Plan

💰 Cost: €25 (~$27 USD)
📶 Data: 10GB (valid for 30 days)
📞 Features: Includes local calls, texts, and EU roaming.
✅ Best For: Reliable coverage and high-speed data across Santorini.

Vodafone Prepaid Tourist Plan

💰 Cost: €20 (~$22 USD)
📶 Data: 8GB (valid for 30 days)
📞 Features: Includes free international calling minutes.
✅ Best For: Travelers needing affordable data with good network coverage.

WIND (Nova) Prepaid Plan

💰 Cost: €15 (~$16 USD)
📶 Data: 6GB (valid for 30 days)
📞 Features: Budget-friendly, with decent coverage.
✅ Best For: Visitors looking for the cheapest option.

eSIM Options in Santorini

If your phone supports eSIM technology, this is a fast and easy alternative to physical SIM cards.

Local eSIM Providers

📲 Cosmote eSIM – Available online and in Cosmote stores. Instant activation via QR code.
📲 Vodafone eSIM – Purchase through Vodafone’s website or retail stores.

International eSIM Providers

🌎 Airalo – Starts at $10 USD for 3GB (7 days).
🌎 Holafly – Offers unlimited data from $27 USD (5 days).

eSIMs are ideal for travelers who want quick activation and don’t want to switch physical SIM cards.

Free Wi-Fi in Santorini

Wi-Fi is available but can be slow due to high tourist demand. Here’s where you can find it:

• Hotels & Resorts – Most accommodations offer free Wi-Fi, but speeds may be slow.
• Cafés & Restaurants – Popular spots like Lioyerma Lounge in Oia and PK Cocktail Bar in Fira offer Wi-Fi for customers.
• Public Spaces – Some tourist hubs and Santorini Airport provide limited free Wi-Fi.

For reliable internet access, using a SIM card or eSIM is recommended.

Tips for Staying Connected in Santorini

✔ Buy Your SIM Before Arriving – Options are limited on the island, so get a SIM in Athens or Thessaloniki.
✔ Activate Your SIM in the Store – If buying locally, ask store staff to set up your SIM.
✔ Download Offline Maps – Google Maps and MAPS.ME are useful for remote navigation.
✔ Monitor Your Data Usage – Use apps like My Data Manager to avoid overages.
✔ Consider a Pocket Wi-Fi – If traveling in a group, renting a portable Wi-Fi device may be more cost-effective.

Enjoy Seamless Connectivity While Exploring Santorini

Whether you choose a local SIM, an eSIM, or rely on free Wi-Fi, staying connected in Santorini enhances your travel experience. From navigating charming villages to booking island excursions, a good mobile connection ensures a smooth and memorable trip.