📱 The four real options
- EU roam-like-home (free, automatic if you have EU number)
- eSIM (digital, instant, no physical SIM, ~€15-€30 for 1-2 weeks)
- Physical Greek tourist SIM (Cosmote/Vodafone/Nova, sold at airport + shops, ~€15-€25)
- Roaming on home plan (often expensive; verify with carrier)
🇪🇺 EU roaming — automatic
If you have an EU mobile number
Since 2017, EU "Roam Like at Home" rules apply. Your home plan's calls, texts, and data allowance work in Greece at home rates. No surcharge. No new SIM needed. Limits exist for "fair use" — abusive use of roaming for residence in another country can trigger restrictions, but tourist usage is fully covered. EU + EEA + Iceland + Norway + Liechtenstein all included.
UK numbers: Brexit means UK is no longer part of EU roaming. Some UK carriers continue free roaming voluntarily (O2, EE, Three with limitations); others charge. Verify with your carrier before travel.
💳 eSIM — the modern choice
Airalo
Most popular eSIM provider. Greece-only or Europe-wide plans. €5-€20 typical for 1-3 GB / 7-30 days. Instant activation via app.
Holafly
Unlimited data plans. €19-€40 for 7-30 days. Premium option for heavy users.
Saily
NordVPN-affiliated. Competitive pricing. App-based.
Maya / Nomad / Ubigi
Other reputable eSIM providers. Compare rates per GB before purchasing.
How eSIM works
- Phone must support eSIM: iPhone XS+ + most iPhones since; Pixel 3+ + most Android flagships. Many mid-range phones now too. Verify before travel.
- Buy via app or website before travel. Receive QR code by email.
- Scan QR code with phone: settings → Cellular → Add cellular plan. Done in 2-3 minutes.
- Activate on arrival in Greece (typically auto-activates on first connection).
- Keep home SIM active for incoming calls/texts (potentially expensive but rare).
📲 Physical Greek SIM cards
- Cosmote (largest network, best coverage). Tourist SIM €15-€25 with 5-10 GB + minutes. Sold at airport + Cosmote shops + many kiosks.
- Vodafone Greece. Similar pricing + coverage.
- Nova (formerly Wind). Slightly cheaper + good urban coverage.
- Activation: passport required (legal registration). Done at point of sale.
- Top-up (anaplírosi): kiosks, supermarkets, online via app. €5-€20 increments.
📊 At a glance — cost comparison
EU roaming: €0
Free for EU mobile numbers. Use home plan as normal.
eSIM 5 GB: €10-€18
Typical pricing for 1-2 weeks. Instant + paperless.
Physical SIM: €15-€25
Includes data + minutes. Greek phone number.
Home roaming: €5-€20/day
Highly variable; often expensive. Verify before travel.
📡 Coverage + speed in Greece
- 4G/LTE: covers virtually all populated areas including small islands.
- 5G: rolling out in Athens + Thessaloníki + major cities. Greek 5G is faster + improving.
- Athens metro tunnels: 4G works well throughout (refresher: Greek metro has WiFi at stations + good cellular).
- Remote islands + mountains: occasional patches of weak signal. Backup paper map useful.
- Speed: typical 30-100 Mbps download in Athens; 50-300+ on 5G.
🛂 Buying physical SIM at airport
The airport-to-Athens SIM workflow
- Athens International Airport (ATH): Cosmote + Vodafone shops at arrivals.
- Show passport (Greek law requires registration).
- Choose plan based on data needs + duration.
- Activation: 5-15 minutes. Working before you leave airport.
- Cost: €15-€25 typical tourist plan.
📞 What you actually need
- For data + Google Maps: 3-5 GB usually enough for week. Google Maps + WhatsApp + email + occasional video.
- For social media + photos: 5-10 GB.
- For video streaming or video calls: 10-20 GB.
- Calls: rarely needed if using WhatsApp + iMessage. Skip phone-call minutes if your plan uses internet calling.
- SMS: rarely needed. WhatsApp dominant.
📱 Tethering / hotspot
- eSIM + physical SIM data plans usually allow tethering. Verify before travel.
- Sharing data with travel companions: useful if only one buys SIM/eSIM.
- Battery management: tethering drains phone fast; bring power bank.
🛡️ Practical tips
- Buy eSIM before travel (saves time at airport + ensures works on arrival).
- Check phone is unlocked for SIM if buying physical. eSIMs work on both unlocked + carrier-locked usually.
- WhatsApp for calls + texts: most efficient for tourist communication.
- Backup data: hotel + café WiFi widely available. Don't panic if data runs low; refill or use WiFi.
- Free WiFi: most cafés, hotels, museums, metro stations. Athens widely covered.
- Greek emergency 112 works without active SIM (free emergency calls).
- Power adapter: Greek plugs Type C/F (European). Bring adapter if from UK/US/AU.
📅 Different traveller scenarios
EU traveller, 1-2 weeks
Just use home plan. Free roaming covers everything.
UK / non-EU, 1 week
eSIM (Airalo, 5GB / 7 days, ~€10-€15). Cheapest + simplest.
USA / Australia, 2-3 weeks
eSIM with 10-15 GB + 30-day plan. ~€20-€30.
Long-term (1+ months)
Physical Greek SIM. Top up as needed. Long-term value.
🎯 What NOT to do
- Don't buy at random airport "SIM" booths: stick to Cosmote / Vodafone official shops.
- Don't pay daily roaming on home plan if cheaper alternatives available.
- Don't assume free hotel WiFi covers everything: maps + payments need cellular reliability.
- Don't buy physical SIM if eSIM works: digital is faster + cheaper for short trips.
- Don't forget to deactivate home roaming: when using eSIM/local SIM, disable home SIM data to avoid surprise charges.
🎯 FAQ
Best eSIM provider for Greece?
Airalo most popular + reliable. Holafly best for unlimited data. Compare prices per GB.
Physical SIM or eSIM?
eSIM if your phone supports + you have short trip. Physical for longer stays + if eSIM unavailable.
Do I need to register a tourist SIM?
Yes — passport required by Greek law. Done in 2 minutes at point of sale.
What about a US/UK traveller's home plan?
Highly variable. T-Mobile USA includes free Greek roaming. Verizon + AT&T charge premium daily passes. UK O2/EE/Three sometimes free. Verify with carrier before travel.
Coverage outside Athens?
Cosmote + Vodafone + Nova all have excellent coverage on islands + mainland. Remote mountains occasional gaps.
Is 5GB enough for 1 week?
Usually yes for maps + WhatsApp + light browsing. Heavy video streamers need more.