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Greece Roaming Tips: Save Money on Data Abroad (2026)

The 30-second answer

Disable data roaming before landing in Greece. Use an eSIM on Cosmote (OTE) for $32/20GB instead of $10/day carrier roaming. Saves $48 over 8 days.

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June 2026 verified2+ networksFrom $2.215 providers comparedUpdated June 2026
Pre-Departure

Before You Land

Pick the Right Data Plan

Match your plan to your trip length. A 1GB eSIM covers light use for 8 days at $2.21. For heavy use, unlimited daily plans start at $2.36/day.

eSIM plans for Greece by trip length
Trip LengthRecommendedCost
3-5 days1GB$2.21
3-5 days3GB$5.56
7-10 days5GB$7.34
7-10 days10GB$12.62
14+ days20GB$32

Compare all eSIM providers for Greece

Phone Preparation Checklist

  • Install your eSIM over home WiFi
  • Download offline maps for Greece
  • Enable WiFi Calling on your phone
  • Turn off automatic app updates over cellular
  • Charge a portable battery pack
  • Save Greece's emergency number: 112

Download These Apps First

  • Offline maps: Google Maps or Maps.me for Greece
  • Translation: Google Translate language pack
  • Currency: converter app for EUR

Know Your Carrier's Rates

AT&T: $10/day (auto-triggered). Verizon: $10/day (2GB cap). T-Mobile: free at 256 Kbps (too slow for maps). Without any plan: $2.05/MB. Know these numbers so you can calculate what you are saving.

Arrival

At the Airport

When to Activate Your eSIM

After clearing customs at Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG), before leaving the terminal. Do not enable your eSIM during layovers. Each country your phone connects to triggers a separate carrier charge. Your eSIM plan timer starts at first network connection.

Airport SIM Counter vs eSIM

Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG) has SIM card kiosks. Typical cost: $10-20 for 10-20GB / 28 days. Wait time: 10-15 min. Your eSIM is already installed. No queue, no language barrier, no passport handover.

Some airport SIM counters in Greece only accept local currency. You land with EUR still to collect from an ATM. The SIM counter wants cash. The ATM has a queue. AT&T charges $10 while you sort out the currency problem. An eSIM processes in your home currency before departure — no foreign currency needed, no ATM stop, no waiting for cash. Plans on Cosmote (OTE) start at $2.21 for 1GB, charged to your regular card on home soil. Land with connectivity already active and your wallet untouched.

Airport WiFi

WiFi at Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG) is available for eSIM QR code installation if you did not install at home. Speed and reliability vary. Free tiers are typically time-limited.

First Connection Test

  1. Open your browser and load any page to confirm data works
  2. Check the status bar for Cosmote (OTE) carrier name
  3. Verify your home SIM still receives calls
  4. Run a speed test at fast.com
iPhone

iPhone Roaming Settings for Greece

iOS 18 adds a Cellular Data toggle in Control Center. Swipe down from the top-right corner of your iPhone. Long-press the connectivity panel. Tap the SIM selector to switch data between your home carrier and your Greece eSIM. This is the fastest way to verify which line carries data after landing at Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG). For the one-time setup: Settings > Cellular > tap your AT&T or Verizon line > Cellular Data Options > Data Roaming OFF. Install the eSIM: Settings > Cellular > Add eSIM > scan QR code. Set the eSIM as data line. AT&T's $10/day charge triggers on the first data byte through Cosmote (OTE) on your home SIM. The Control Center toggle lets you verify your eSIM is active in 2 seconds.

Samsung

Samsung Roaming Settings for Greece

Samsung One UI includes a Roaming quick tile in the notification shade. Swipe down twice from the top of your Galaxy S24 or S25. Find the Roaming tile (may need to edit tile layout: tap the pencil icon and drag Roaming into your active tiles). Tap the tile to toggle roaming OFF on your home carrier before landing at Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG). This is the fastest one-tap method on any Android phone. For eSIM installation: Settings > Connections > SIM Manager > Add eSIM. Scan the provider's QR code. Set the e-SIM as your mobile data line. The quick tile confirms roaming status at a glance: OFF on your home carrier, data flowing through Cosmote (OTE) on your eSIM at $2.21 for 1GB.

Pixel

Pixel Roaming Settings for Greece

Google Pixel 9 and Pixel 8 on Android 15: open Settings > Network & Internet > SIMs. Tap your home carrier (AT&T, Verizon, or T-Mobile). Toggle Roaming OFF. This prevents the $10/day charge on Cosmote (OTE) in Greece. Install a travel eSIM: Settings > Network & Internet > SIMs > Add SIM (or download from your provider's app). After scanning the QR code, return to Settings > Network & Internet > SIMs and tap the new e-SIM entry. Set it as your mobile data SIM. Your home carrier handles calls and texts. The eSIM handles all data on Cosmote (OTE) at $2.21 for 1GB. Pixel phones support per-SIM roaming toggles, so roaming stays OFF on your home carrier and ON for the eSIM simultaneously.

Dual SIM

Dual SIM Configuration for Greece

iPhone 14 and newer (US models) support two eSIM profiles simultaneously. Both your home carrier and your Greece travel eSIM are digital. Open Settings > Cellular to see both lines. Tap your home carrier line: turn Data Roaming OFF, confirm Voice & Data is set to your home carrier. Tap your travel e SIM line: turn Data Roaming ON, confirm it is set as the Cellular Data line. Go to Settings > Cellular > Cellular Data and select the travel eSIM. Verify: your home carrier shows "No Service" or "SOS Only" for data in Greece. Your eSIM shows Cosmote (OTE) with signal bars. A 1GB plan at $2.21 on Cosmote (OTE) handles all data. WiFi Calling on your home eSIM routes calls through your US carrier at domestic rates. Total roaming charge prevention: $0. Total eSIM cost: $2.21.

WiFi Calling

WiFi Calling Setup for Greece

WiFi Calling in Greece provides a free voice alternative to carrier roaming. WiFi availability is good. Free WiFi in most cafes and tavernas; hotel WiFi generally reliable Enable WiFi Calling before departure on your home SIM. Connect to hotel or cafe WiFi in Greece. Calls route through your US carrier network at domestic rates. No roaming surcharge. Your eSIM on Cosmote (OTE) handles data at $2.21 for 1GB. WiFi Calling handles voice for free. The combination eliminates both the $10/day data charge and the $1-3/minute voice roaming fee.

Background Data

Background App Settings for Greece

Background App Refresh (iPhone)

Settings > General > Background App Refresh

Disable globally or per-app. Background refresh on Cosmote (OTE) in Greece consumes 50-200 MB/day without you opening any app. At $2.05/MB without a roaming plan, that is $102-410/day in silent charges. With an eSIM, this data counts against your plan. Disable for social media, news, and shopping apps. Keep enabled for Maps and messaging.

Mail Fetch vs Push (iPhone)

Settings > Mail > Accounts > Fetch New Data

Switch from Push to Fetch (every 30 minutes or Manual). Push email checks Cosmote (OTE)'s network every 15-60 seconds in Greece. At EET/EEST (UTC+2/+3) timezone, overnight pushes sync while US colleagues send daytime emails. Fetch reduces email data by 60-80% compared to Push. Each push check: 0.5-2 MB.

iCloud Photos cellular upload (iPhone)

Settings > Photos > Cellular Data OFF

iCloud uploads every photo to the cloud over cellular by default. After a day of sightseeing in Greece, 50-200 photos queue for upload overnight. Each high-res photo: 3-8 MB. Total overnight upload on Cosmote (OTE): 150-1,600 MB. At $2.05/MB: $307-3,280 without a plan. With an eSIM, this drains your data balance. Upload photos manually on hotel WiFi instead.

Data Saver (One UI) (Samsung)

Settings > Connections > Data Usage > Data Saver ON

Samsung Data Saver restricts background data for all apps except whitelisted ones. Whitelist Maps, your messaging app, and your eSIM provider app. Block background data for social media, streaming, and news. This reduces background consumption on Cosmote (OTE) in Greece by 30-50%. Your eSIM data lasts longer without manual intervention.

Auto-sync toggle (Samsung)

Settings > Accounts and Backup > Manage Accounts > Auto Sync Data OFF

Auto-sync pushes email, contacts, calendar, and app data over Cosmote (OTE) in Greece. Disabling auto-sync stops all account synchronization on cellular. Sync manually on hotel WiFi. Re-enable auto-sync when you return home. This single toggle prevents the largest category of background data usage on Samsung devices.

Adaptive Battery and data (Pixel)

Settings > Battery > Adaptive Battery ON

Pixel's Adaptive Battery restricts background activity for infrequently used apps. In Greece, this reduces unnecessary data consumption on Cosmote (OTE) without manual app-by-app management. Keep Adaptive Battery ON. It learns your usage pattern and limits background data for apps you rarely open while traveling.

Set data warning and limit (Pixel)

Settings > Network & Internet > SIMs > eSIM > Data Warning & Limit

Set a data warning at 80% of your eSIM plan and a hard limit at 95%. Pixel shows a notification when you approach the warning threshold. The hard limit stops cellular data before you exceed your plan in Greece. This prevents overage charges on prepaid eSIM plans and unexpected top-up costs on Cosmote (OTE).

Automatic App Downloads (iPhone)

Settings > App Store > App Downloads: toggle OFF for cellular

A single app update runs 50-500 MB. At $2.05/MB on Cosmote (OTE) in Greece: $102-1,025 per update without a plan. With an eSIM, one update can consume 10-50% of a small data plan. Disable automatic downloads. Update apps manually on hotel WiFi only. Check for updates before departure so critical apps are current.

Airplane Mode

Airplane Mode Sequence for Greece

After landing at Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG), verify your dual-SIM configuration before disabling Airplane Mode. Check list: (1) Home SIM Data Roaming OFF. (2) eSIM set as Cellular Data line. (3) eSIM Data Roaming ON (allows Cosmote (OTE) connection). iPhone: Settings > Cellular > verify both lines. Samsung: Settings > SIM Manager > verify both lines. Pixel: Settings > Network & Internet > SIMs > verify both. Only after confirming all three settings: disable Airplane Mode. Your phone connects to Cosmote (OTE) through the e SIM at $2.21 for 1GB. If any setting is wrong, Airplane Mode keeps you safe. Fix the setting, then disable Airplane Mode. Zero risk of a $10 AT&T trigger.

Data Tracking

Data Usage Monitoring in Greece

Pixel phones on Android 15: Settings > Network & Internet > SIMs > tap your e SIM > App Data Usage. This shows per-app consumption on Cosmote (OTE) in Greece. Set a data warning: Settings > Network & Internet > SIMs > eSIM > Data Warning & Limit. Warning at 16 GB, limit at 19 GB. Your 20GB plan gives a daily budget of 2.5 GB over 8 days. Pixel shows the most data-hungry apps first. Restrict background data for streaming and social media apps that consume more than 100 MB/day. Keep Maps and messaging unrestricted.

Country-Specific

Greece-Specific Device Settings

Switch email from Push to Fetch in Greece. The EET/EEST (UTC+2/+3) timezone means US business hours overlap with your nighttime. Push email checks Cosmote (OTE)'s network every 15-60 seconds while you sleep. Each check costs 0.5-2 MB at $2.05/MB without a plan. iPhone: Settings > Mail > Accounts > Fetch New Data > switch to Every 30 Minutes or Manually. Android: open your email app Settings > Sync frequency > Every 30 Minutes or Manual.

Physical SIM cards in Greece require passport registration. Passport required for prepaid SIM purchase An eSIM bypasses this requirement entirely. No store visit, no passport scan, no activation wait. Install before departure on home WiFi. The e-SIM connects to Cosmote (OTE) after landing without any registration step. This is the single largest convenience advantage of an eSIM in countries with SIM registration requirements.

Device Guides

Turn Off Roaming: Greece Device Guide

iPhone

Open Settings, tap Cellular, tap Cellular Data Options, and switch Data Roaming off. This prevents AT&T from charging $10/day in Greece.

iPhone dual-SIM setup in Greece: keep your primary SIM for calls (Data Roaming off), add an eSIM for data on Cosmote (OTE). Set the eSIM as your default data line in Settings > Cellular. Total cost: $32 vs $80 roaming.

Samsung

Samsung users visiting Greece should disable roaming at Settings > Connections > Mobile Networks. Then install an eSIM through SIM Manager.

After disabling Data Roaming on Samsung, also turn off Auto Sync in Settings > Accounts. This prevents background data from consuming your eSIM allowance during your 8-day trip to Greece.

Pixel

To turn off roaming on Google Pixel before visiting Greece, go to Settings > Network & Internet > SIMs > select your carrier > toggle Roaming off.

With Roaming disabled, your Pixel phone will not bill through your carrier in Greece. Add a travel eSIM: Settings > Network & Internet > SIMs > Add SIM. Scan the QR code for 20GB on Cosmote (OTE) at $32.

Data Guide

Getting Data in Greece

Best Way to Get Data

The best way to get data in Greece is a travel eSIM on Cosmote (OTE) — 20GB for $32, activated before you land.

Local SIMs require passport registration at the counter. An eSIM skips the counter entirely. You buy it online, scan a QR code, and connect to Cosmote (OTE)'s 5G network. The 20GB plan costs $32 and lasts your entire 8-day trip.

  1. Check that your phone supports eSIM (iPhone XS+, Samsung Galaxy S21+, Pixel 3+).
  2. Buy a Greece eSIM: 20GB on Cosmote (OTE) for $32.
  3. Scan the QR code: Settings > Cellular > Add eSIM (iPhone) or SIM Manager (Samsung).
  4. Disable carrier data roaming to prevent simultaneous charges.
  5. Land in Greece with data already active on Cosmote (OTE).

An eSIM costs $32 vs carrier roaming at $80 or airport SIM at $10-20 for 10-20GB / 28 days+.

Do You Need an eSIM?

You do not strictly need an eSIM for Greece, but it is the cheapest way to avoid $10/day carrier roaming charges.

WiFi in Greece is good. Hotels and cafes often have WiFi, but you lose connectivity between hotspots. Maps, ride-hailing, and translation apps need constant data. An eSIM on Cosmote (OTE) fills those gaps for $32/20GB.

With an eSIM, a 8-day trip to Greece costs $32 for data. Carrier roaming costs $80.

Key Tip

Top Roaming Tip for Greece

✓ Pro tip

Disable data roaming before landing in Greece. Use an eSIM on Cosmote (OTE) for $32/20GB instead of $10/day carrier roaming. Saves $48 over 8 days.

Daily Tips

During Your Stay

Stretch Your Data

  • Use WiFi for downloads and streaming
  • Keep video quality at 480p on cellular
  • Disable auto-play on social media feeds
  • Use offline maps for navigation
  • Compress photos before uploading

WiFi Hunting in Greece

WiFi availability: good. Free WiFi in most cafes and tavernas; hotel WiFi generally reliable

Tethering and Hotspot

Share your eSIM data with travel companions via Personal Hotspot. Most eSIM providers allow tethering. Holafly supports it on all plans. Airalo supports it on most plans. Battery drains faster with hotspot enabled.

Top Up If You Run Out

Buy more data through the provider app. Or purchase a second eSIM. Switch to unlimited daily at $2.36/day for worry-free data. eSIM installation refresher →

Peak Season Warning

Network congestion increases during Greece's peak season (Jun-Sep). Summer peak for islands; Athens best in spring/fall; shoulder seasons offer better value

36.2M (2024) travelers visit Greece each year. Most arrivals concentrate during Jun-Sep. Every one of those travelers faces the same $10/day AT&T charge the moment their phone connects to Cosmote (OTE) at Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG). Summer peak for islands; Athens best in spring/fall; shoulder seasons offer better value. Peak season does not change roaming rates — AT&T charges the same $10/day in January and July. The difference is preparation time. Book your eSIM 5-7 days before departure during peak months to avoid last-minute setup stress. A 20GB plan on Cosmote (OTE) costs $32 regardless of season.

Watch Out

How travelers accidentally trigger roaming in Greece

The Push Notification Trap

! One notification = $10

One push notification triggers AT&T's $10 daily charge. Weather widgets, email sync, WhatsApp pings. The charge resets at midnight Eastern, not Greece local time.

The WiFi Drop Trap

Walking out of hotel WiFi range triggers a carrier connection on Cosmote (OTE). One webpage load on your home SIM costs $10. Keep home SIM data roaming OFF.

The Background Sync Trap

iCloud backup overnight at per-MB rates: $1,025-2,099. A single app update (200 MB): $410. Photo sync and email attachment downloads add up fast. Disable all background sync on your home SIM before departure.

The Departure Day Trap

Carrier charges apply on departure day. Your phone connects to Cosmote (OTE) at Athens (ATH) / Heraklion (HER) / Thessaloniki (SKG) during check-in, triggering an extra $10 charge. Disable roaming on your home SIM before leaving your hotel.

The Transit Layover Trap

Each country layover triggers a separate $10/day charge. A flight with one layover means two countries, two charges. Keep airplane mode on during all layovers.

More Mistakes to Avoid

1

WiFi Assist left on

iOS WiFi Assist automatically switches to cellular when hotel WiFi weakens. In Greece, this routes data through your home SIM on Cosmote (OTE), triggering AT&T's $10/day charge mid-session. Disable WiFi Assist under Settings > Cellular before departure.

2

iCloud backup over cellular

iCloud backs up overnight using any available data connection. A 500 MB backup at $2.05/MB costs over $1,000 on Cosmote (OTE) in Greece. Disable iCloud backup on cellular in Settings > Cellular before landing.

3

Day pass midnight reset misunderstood

AT&T's $10/day pass resets at midnight EET/EEST (UTC+2/+3) time — not local time in Greece. Landing at 10pm local time can trigger two separate $10 charges before you sleep. An eSIM on Cosmote (OTE) at $2.21 has no midnight reset.

Save More

Money-Saving Tricks

eSIM Stacking

Visiting multiple countries? Buy a regional eSIM instead of per-country plans. Airalo offers Asialink, Eurolink, and other regional options. Delete expired profiles to free eSIM slots on your phone.

WiFi Calling for Free Voice

Use WiFi Calling on your home number for free inbound and outbound calls. iPhone: Settings > Phone > WiFi Calling. Android: Settings > Network > WiFi Calling. Works alongside your eSIM data. No per-minute carrier roaming charges.

Offline Everything

Download before departure: maps, translation packs, entertainment (Netflix and Spotify offline mode), boarding passes, and hotel confirmations. This reduces daily data usage from 1.5 GB to under 500 MB.

Local Prepaid Alternative

A local prepaid SIM in Greece costs approximately $8-15 for 5-15GB / 28 days. Requires passport and in-person registration. An eSIM advantage: no store visit, no wait, pre-installed before departure.

Family and Group Savings

✓ Family savings math

4 phones × $10/day × 8 days = $320 carrier cost. 4 eSIMs at $2.21 each = $8.84. Savings: $311.16. Or share one eSIM via hotspot for even more savings.

Common questions

Roaming charges FAQ for Greece roaming tips

How do I turn off data roaming on my iPhone for Greece?

Go to Settings > Cellular > Cellular Data Options > Data Roaming and toggle it off. Do this before boarding. Once your phone detects Cosmote (OTE)'s tower in Greece, AT&T charges $10/day the instant any data crosses the connection. On Android: Settings > Connections > Mobile Networks > Data Roaming (off). After disabling roaming, install your Greece eSIM while still on home WiFi. Set the eSIM as your data line before landing. Your home SIM stays active for calls and texts while the eSIM handles all data without touching your carrier plan.

Yes, background apps are one of the most common sources of surprise roaming bills. With data roaming enabled and no day pass, AT&T charges $2.05/MB in Greece. Background App Refresh on iPhone syncs mail, news, and social apps every 15-30 minutes automatically, including at 3am while you sleep. A single overnight background sync session can accumulate $50-200 in charges without you opening your phone. Disable Background App Refresh before travel: Settings > General > Background App Refresh > Off. Then disable data roaming. An eSIM replaces carrier data entirely. Background syncs bill against the eSIM's flat-rate data at $2.21, not your home carrier's per-MB rate.

On iPhone: Settings > Cellular > scroll down to "Current Period Roaming" to see total roaming data consumed. On Android: Settings > Connections > Data Usage > Mobile Data Usage > select your SIM, then filter by roaming. Check this immediately after landing in Greece to catch charges early. AT&T also sends usage alerts at 50%, 75%, and 100% of Day Pass data limits. Log into the myAT&T or My Verizon app for itemized charges from Cosmote (OTE). If roaming data appeared, enable Airplane Mode, disable data roaming, and call your carrier within 48 hours. Prevent future charges with an eSIM at $2.21 for 1GB.

A prepaid eSIM is the most cost-effective way to avoid roaming charges in Greece. The best per-GB rate is the 10GB plan at $12.62 total, which works out to $1.26/GB on Cosmote (OTE). Disable data roaming on your home SIM before departure and install the eSIM as your data line. Your home SIM keeps your number active for calls and texts. The eSIM handles all data at flat-rate pricing with no per-day activation fees and no per-MB overages.

AT&T International Day Pass charges $10/day in Greece, totaling $80 for a 8-day trip. Verizon TravelPass costs the same $10/day. Without a day pass, AT&T pay-per-use rates reach $2.05/MB, so a 50 MB Google Maps session costs over $100. T-Mobile includes free international data but throttles to 256 Kbps, which is too slow for navigation or video calls. A travel eSIM connects to Cosmote (OTE) starting at $2.21 for 1 GB with no daily activation fee and no per-MB overages.

Yes. WhatsApp, FaceTime, and all messaging apps work normally on an eSIM data connection in Greece. WhatsApp voice calls use 0.5-1 MB/minute. Video calls use 3-5 MB/minute. A 30-minute FaceTime video call consumes approximately 150 MB. With an eSIM on Cosmote (OTE) starting at $2.21, these calls cost a fraction of carrier international calling rates ($1.00-3.00/minute). Your home number stays on your home SIM for regular SMS and calls.

Your home number stays fully active. With dual-SIM setup, your home SIM keeps your phone number for calls and texts while the Greece eSIM handles data on Cosmote (OTE). You receive calls on your home number. SMS messages arrive normally. Data routes through the eSIM at $2.21 instead of your carrier's $10/day roaming. On iPhone, set Cellular Data to the eSIM line and Default Voice to your home SIM. Both lines work simultaneously. Your home number is not affected by the eSIM installation and remains active throughout your entire trip.

Travel eSIMs for Greece connect through Cosmote (OTE) and Vodafone GR, the same carrier infrastructure your home carrier's roaming partners use. The 5G network delivers up to 102 Mbps download speed. AT&T and Verizon both route their roaming through the same towers and charge $10/day for access. An eSIM connects to the same infrastructure for $2.21/GB with no daily activation fee.

Yes. WiFi Calling lets you make and receive calls using your home number over any WiFi network without roaming charges. On iPhone: Settings > Phone > WiFi Calling > toggle on. On Android: Settings > Connections > WiFi Calling > toggle on. Test it at home before departure. With WiFi Calling active in Greece, incoming calls ring through WiFi instead of Cosmote (OTE)'s roaming network. Combined with an eSIM for data ($2.21), you have full phone functionality at zero carrier roaming cost. AT&T, Verizon, and T-Mobile all support WiFi Calling. Check with your carrier to confirm it works for international destinations.

No. AT&T International Day Pass and Verizon TravelPass both cost $10/day, activated the moment any background app touches your data connection. A 8-day Greece trip costs $80 in carrier add-on fees. A Greece eSIM for the same 8 days costs $32 on 20GB, which is 60% cheaper with no activation risk from background data. Carrier add-ons are only worth considering for single-day trips where eSIM installation is not feasible.

EU roam-like-at-home applies within EU member states. If Greece is in the EU, your European carrier plan works without extra charges, but "fair use" limits apply. Most EU carriers cap roaming at the same data volume as your home plan, after which speed drops to 64 Kbps. US travelers get no EU roaming benefit. AT&T, Verizon, and T-Mobile charge standard international rates in Greece. An eSIM starting at $2.21 avoids the fair-use throttle and the EU policy complexity.

Passport required for prepaid SIM purchase This applies to local physical SIM cards only. A travel eSIM installed before departure does not require local registration. It activates through your provider's app and connects to Cosmote (OTE) without any in-person paperwork. Plans start at $2.21.

On iPhone: Settings > General > About > scroll to "Carrier Lock." If it says "No SIM restrictions," your phone is unlocked and supports eSIM for Greece. If it says "SIM locked," contact your carrier to request an unlock (typically free after 60 days of service). On Android: insert a SIM from a different carrier. If it connects, the phone is unlocked. Or call your carrier and ask. Unlocked phones connect to Cosmote (OTE) in Greece via eSIM at $2.21. Locked phones are restricted to your home carrier's roaming at $10/day.

Yes. Most travel eSIMs for Greece support personal hotspot (tethering). Enable it on iPhone: Settings > Personal Hotspot > Allow Others to Join. On Android: Settings > Connections > Mobile Hotspot. Your phone shares the eSIM's data connection from Cosmote (OTE) with laptops, tablets, and other phones. Some budget eSIM plans restrict tethering, so check the plan details before purchase. Plans starting at $2.21 for 1 GB on Cosmote (OTE) typically include hotspot support. Data consumed via hotspot counts against your plan balance at the same rate as on-device usage.

Save money on data abroad

Save money on data in Greece.

A 1GB eSIM costs $2.21 on Cosmote (OTE). AT&T charges $80 for the same 8 days.

Compare eSIM providers →Full prevention guide →
Sarah ChenRoaming Charges Analyst
205 countries6 carriers tracked

Former consumer pricing analyst at J.D. Power covering wireless carrier satisfaction surveys

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