eSIM vs Roaming in 2026: complete guide with real prices
"eSIM or roaming?" is one of the first questions before any international trip. The short answer: within the EU, roaming is free and you don't need anything extra. Outside the EU, a prepaid eSIM costs 50-200 times less than your carrier's roaming rates.
Below you'll find the complete comparison with real prices from August 2026, for every popular destination, plus everything you need to know to choose, install, and use an eSIM without hassle.
Inside the EU: roaming is already free — no eSIM needed
Since 2017, the EU's "Roam Like at Home" (RLAH) regulation gives you the right to use your domestic mobile plan across all 27 EU member states plus Iceland, Liechtenstein, and Norway at no additional cost. If you have 50 GB at home, you have 50 GB in Greece, Spain, or Italy too.
The regulation has been extended through June 30, 2032, so there's no risk of it disappearing anytime soon.
Fair Use Policy — the data cap you should know about
There's a maximum amount of data you can use while roaming in the EU, but for most plans it's generous. The formula:
Fair-use cap (GB) = (domestic plan price in EUR / EUR 1.00) x 2
For a EUR 10/month plan, the roaming cap is 20 GB. For EUR 25/month, it's 50 GB. Since January 2025, the wholesale rate dropped to EUR 1.00/GB (from EUR 1.30), meaning higher fair-use caps for travelers.
| Plan type | Monthly cost | Estimated roaming cap |
|---|---|---|
| Budget SIM-only | EUR 5-8 | ~12 GB |
| Mid-range plan | EUR 15-20 | ~34 GB |
| Premium / unlimited | EUR 30-45 | Effectively unlimited |
| Prepaid top-up | EUR 10 (one-time) | ~20 GB |
If you exceed the cap, your carrier charges a maximum of EUR 2.00/GB — still reasonable. You'll receive notifications at 80% and 100% of your allowance.
Countries NOT covered by free EU roaming
This is where confusion costs real money:
- Switzerland — surrounded by the EU but NOT in it and NOT in the EEA. Roaming here uses non-EU rates
- United Kingdom — since Brexit (2020), the UK is no longer part of RLAH. Charged as a non-EU destination
- Turkey — one of the most popular vacation destinations from Europe, but non-EU with expensive roaming
- Albania, Serbia, Montenegro, Bosnia, Kosovo, North Macedonia — popular Balkan destinations, ALL non-EU
- Egypt, Tunisia, Morocco — non-EU
- United Arab Emirates (Dubai), USA, Thailand, Japan — non-EU
Simple rule: if the country isn't in the EU or EEA (Iceland, Liechtenstein, Norway), roaming is NOT free.
Outside the EU: what carrier roaming actually costs
The numbers are shocking. European carriers charge non-EU roaming at rates that seem from another era:
Typical European carrier roaming rates (non-EU)
| Zone | Typical countries | Data rate | Cost per GB |
|---|---|---|---|
| Zone 2 (closer non-EU) | Turkey, USA, Canada, UK | EUR 5-15 per MB | EUR 5,000-15,000 |
| Zone 3 (rest of world) | UAE, Asia, Africa | EUR 8-20 per MB | EUR 8,000-20,000 |
Read that again: a single GB in carrier roaming can cost EUR 5,000-15,000. If your phone downloads a 500 MB app update in the background, that's a EUR 2,500-7,500 bill. A 5 GB eSIM for the same destination costs USD 12-18.
Why this happens
European carriers don't have favorable wholesale agreements with networks outside the EU. The rates reflect real interconnection costs plus significant margins. It's a business model from the 2000s that hasn't adapted to the smartphone era — which is exactly why eSIMs have exploded in popularity.
What is an eSIM and how it works
An eSIM (embedded SIM) is a digital SIM card already built into your phone. It's not a physical object you insert — it's a software profile you download.
How it works, step by step
- Buy a data plan online (website or app) before your trip
- Receive a QR code via email or in the app
- Scan the QR code in your phone's settings — the eSIM profile installs
- Upon landing, your phone automatically connects to the local partner network
- You have internet at local rates, up to 200 times cheaper than roaming
The key advantage: Dual SIM
The vast majority of modern phones support two SIMs simultaneously — physical SIM + eSIM. This means:
- Your physical home SIM stays active for calls, texts, and bank verification codes (OTPs)
- The eSIM handles internet exclusively, at local rates
- Both work simultaneously — no need to remove one card to insert another
Setup takes 2-3 minutes in your phone's settings. Once installed, the eSIM activates automatically when you arrive at your destination.
Types of eSIM
| Type | Coverage | When to choose | Typical price |
|---|---|---|---|
| Local eSIM (single country) | One specific country | Vacation in one destination | USD 4-20 |
| Regional eSIM | Group of countries (Europe, Asia, etc.) | Multi-country tours | USD 5-30 |
| Global eSIM | 100-170+ countries | Frequent travelers, complex itineraries | USD 15-50 |
Detailed comparison: eSIM vs roaming vs local SIM
| Criterion | EU roaming | Non-EU roaming | Prepaid eSIM | Local physical SIM |
|---|---|---|---|---|
| Cost | Free (included) | EUR 5-20 per MB | USD 4-20 / 1-10 GB | Cheapest per GB |
| Setup | Zero | Zero | 2-3 min, from home | 15-30 min at airport |
| Keep your number | Yes | Yes | Yes (Dual SIM) | Must remove your SIM |
| Receive SMS/bank codes | Yes | Yes (expensive) | Yes (physical SIM) | Not on the new number |
| Availability | Automatic | Automatic | Online, before departure | At destination |
| Hotspot | Usually yes | Usually yes | Depends on plan | Depends |
| Coverage | 30 EU/EEA countries | Global | 150-200+ countries | One country |
Real eSIM prices per destination — August 2026
We compared the four major platforms for the most popular travel destinations. Prices are in USD, verified August 2026.
Turkey — the eSIM destination with a catch
Turkey has a critical quirk: since July 2025, Turkey's telecommunications authority (BTK) has blocked access to the websites and apps of major eSIM providers (Airalo, Holafly, Saily, Nomad, Instabridge, Alosim, BNESIM, Mobimatter, Ubigi, and Roamless) for users inside Turkey. eSIMs purchased before arrival work perfectly — the block only prevents new purchases from within the country.
The bottom line for Turkey: you MUST buy your eSIM before departure. There is no workaround.
| Provider | 1 GB | 3 GB | 5 GB | 10 GB | Unlimited |
|---|---|---|---|---|---|
| Airalo | 4.50 | 11 | 16 | 26 | — |
| Saily | 3.99 | — | 13.99 | — | — |
| Yesim | — | — | — | 19.20 | 8.40-88.80 (1-90 days) |
| Holafly | — | — | — | — | 19.50 (5 days), 36.90 (10 days) |
Validity: typically 7-30 days. Partner networks: Turk Telekom, Turkcell — both excellent in Istanbul, Cappadocia, Antalya, and the Aegean coast.
United States
The US market is very competitive, with some of the best eSIM pricing:
| Provider | 1 GB | 3 GB | 5 GB | 10 GB | Unlimited |
|---|---|---|---|---|---|
| Airalo | 4.50 | 11 | 18 | 30 | — |
| Saily | 3.59 | 8.09 | 12.59 | 20.69 | — |
| Yesim | — | — | — | 21.60 | 8.40-57.60 (1-30 days) |
| Holafly | — | — | — | — | 19.50 (5 days) |
Networks: T-Mobile and AT&T — excellent in cities, weaker in rural areas of the western US and national parks.
Pro tip: download offline maps on Google Maps before departure. A US road trip can consume 1-2 GB on navigation alone without offline maps.
United Kingdom
Since Brexit, the UK is NO longer part of free EU roaming. Your European carrier charges non-EU rates:
| Provider | 1 GB | 3 GB | 5 GB | 10 GB | Unlimited |
|---|---|---|---|---|---|
| Airalo | 5.00 | 11 | 16 | 26 | — |
| Saily | 4.49 | 8.09 | 11.69 | 18.89 | — |
| Yesim | — | — | — | 19.20 | 8.40-51.60 (1-30 days) |
| Holafly | — | — | — | — | 19.50 (5 days) |
London bonus: public Wi-Fi is everywhere (the Tube, coffee shops, hotels). A 3-5 GB plan is enough even for 2 weeks if you use Wi-Fi when available.
Thailand
Thailand is one of the cheapest eSIM destinations, and free Wi-Fi in cafes and hotels is excellent:
| Provider | 1 GB | 3 GB | 5 GB | 10 GB | Unlimited |
|---|---|---|---|---|---|
| Airalo | 4.50 | 11 | 16 | 26 | — |
| Saily | 2.99 | — | 11.99 | — | — |
| Yesim | — | 14.40 | 18 | 25.20 | 8.40-64.80 (1-30 days) |
| Holafly | — | — | — | — | 19.50 (5 days) |
Networks: AIS and DTAC — both very strong in Bangkok, Chiang Mai, and tourist islands (Phuket, Koh Samui, Koh Phangan).
Egypt
Popular all-inclusive destination with expensive carrier roaming:
| Provider | 1 GB | 3 GB | 5 GB | 10 GB |
|---|---|---|---|---|
| Airalo | 4.50 | 10 | 14 | 23 |
| Saily | 3.99 | — | 13.99 | — |
| Yesim | — | — | — | 19.20 |
| Holafly | — | — | — | — (19.50 / 5 days unlimited) |
Japan
Premium destination with excellent eSIM coverage:
| Provider | 1 GB | 3 GB | 5 GB | 10 GB |
|---|---|---|---|---|
| Airalo | 4.50 | 11 | 16 | 26 |
| Saily | 3.99 | — | 13.99 | — |
| Yesim | — | — | — | 19.20 |
United Arab Emirates (Dubai)
| Provider | 1 GB | 3 GB | 5 GB | 10 GB |
|---|---|---|---|---|
| Airalo | 4.50 | 10 | 15 | 26 |
| Saily | 3.99 | — | 13.99 | — |
Balkan countries (non-EU): Albania, Serbia, Montenegro, Bosnia
Popular summer destinations — and ALL non-EU, so roaming is expensive:
| Provider | Regional Balkans plan | Price |
|---|---|---|
| Airalo | Europe (39 countries) — 1 GB / 7 days | 5 USD |
| Airalo | Europe — 5 GB / 30 days | 20 USD |
| Saily | Europe — 1 GB / 7 days | 4.49 USD |
| Yesim | Europe (33 countries) — 10 GB / 30 days | 19.20 USD |
Important: check whether the regional plan includes your specific country — Albania and Kosovo are sometimes excluded from "Europe" bundles.
Comparing Airalo vs Saily vs Yesim vs Holafly
The four platforms have different business models. Here's how they compare:
| Criterion | Airalo | Saily | Yesim | Holafly |
|---|---|---|---|---|
| Countries covered | 200+ | 200+ | 170+ | 160+ |
| Model | Aggregator (multi-provider) | Direct provider (NordVPN) | Direct provider | Direct provider |
| Small plans (1 GB) | Yes, from 4.50 USD | Yes, from 2.99 USD | No (minimum 3-5 GB) | No (unlimited only) |
| Unlimited plans | No | No | Yes | Yes (all plans) |
| VPN included | No | Yes (basic) | Yes (iOS) | No |
| Hotspot | Depends on plan | Yes | Depends on plan | Not on standard |
| App | iOS + Android | iOS + Android | iOS + Android | iOS + Android |
| Support | Live chat | Live chat | Live chat (longer waits) | Live chat |
| Avg. price 5 GB Turkey | ~16 USD | ~14 USD | ~18 USD | ~19.50 USD (5 days unlimited) |
When to choose each
Airalo — best overall choice. The largest aggregator with the most options per destination. Ideal when you want to compare dozens of plans in one place. Recommended for: first-time eSIM buyers, exotic destinations, maximum flexibility.
Saily — best value for money. Prices are slightly below Airalo for most destinations, and it includes basic VPN protection plus ad-blocker. Ideal for: travelers who want simplicity + value, existing NordVPN users.
Yesim — best for unlimited plans. Offers unlimited data with reasonable daily rates (from USD 8.40/day). Includes optional virtual phone number (USD 3.60/month). Ideal for: long trips, heavy users, anyone who wants unlimited without surprises.
Holafly — simplest, but most expensive. All plans are unlimited at a flat daily rate. No small plans (1-5 GB). Ideal for: anyone who doesn't want to calculate GBs, wants total simplicity, and doesn't mind the higher price.
How much data do you need — practical calculator
The most common question: "how many GBs will I need?" The answer depends on how you use your phone while traveling:
Data consumption per app
| App | Typical consumption | Notes |
|---|---|---|
| Google Maps navigation | 100-200 MB/hour | Download offline maps = 0 MB |
| Google Maps search | 1-5 MB per search | Without active navigation |
| WhatsApp text messages | ~1 MB / 100 messages | Negligible |
| WhatsApp voice call | 35-50 MB/hour | Good alternative to roaming calls |
| WhatsApp video call | 250-350 MB/hour | High consumption — use on Wi-Fi |
| Instagram feed | 100-150 MB / 30 min | Reels and Stories consume double |
| Instagram Reels/Stories | 200-400 MB / 30 min | Major data consumer |
| TikTok | 300-500 MB / 30 min | Highest data consumer |
| 50-100 MB / 30 min | Reels are equally expensive | |
| Uber/Bolt/Lyft | 5-10 MB per ride | Negligible |
| Spotify | 40-60 MB/hour (standard) | Download playlists on Wi-Fi |
| YouTube 480p | 250-350 MB/hour | Avoid on mobile data |
| Netflix | 700 MB-1 GB/hour | Wi-Fi ONLY |
| 1-5 MB per email | With attachments |
Daily consumption profiles
| Profile | What you do | Daily usage | Per week | Recommended plan |
|---|---|---|---|---|
| Light | Maps + WhatsApp + email | 50-100 MB | 0.5-1 GB | 1 GB |
| Moderate | + social media, Uber, searches | 300-500 MB | 2-3 GB | 3 GB |
| Heavy | + active Instagram/TikTok, Stories | 700 MB-1 GB | 5-7 GB | 5-7 GB |
| Digital nomad | Remote work, video calls, cloud | 1.5-3 GB | 10-20 GB | 15-20 GB |
Golden rule: add 20-30% on top of your estimate. Background apps (updates, cloud sync, photo backup) consume data without you noticing.
Practical money-saving tips:
- Disable automatic app updates on mobile data
- Set video quality to "Data saver" in YouTube, Instagram, and TikTok
- Download offline maps, Spotify playlists, and Netflix episodes on Wi-Fi
- Use hotel/cafe Wi-Fi for anything data-heavy
- Disable automatic photo upload to cloud (Google Photos, iCloud)
How to install an eSIM — step-by-step guide
Before your trip (1-2 days before departure)
1. Check phone compatibility
Go to Settings > Network / SIM / Mobile Data. If you see an option to "Add eSIM" or "Add data plan," your phone is compatible.
eSIM-compatible phones (2026):
| Brand | Compatible models |
|---|---|
| Apple iPhone | XS, XR, and all newer models (including SE 2, SE 3, 11-17, iPhone Air) |
| Samsung Galaxy | S20 and newer, Z Flip/Fold all generations, A54, A55 |
| Google Pixel | 3 and all newer models (including Pixel 9 Pro Fold, Pixel 10) |
| Xiaomi | 13, 14, 14T, 15, 15T, 17, 17T Pro |
| OnePlus | 11, 12, 13, 13R, 15 |
| Motorola | Razr (2019+), Edge 50+, Edge 70 |
| Sony | Xperia 10 IV+, Xperia 1 V+, Xperia 5 V |
| Huawei | P40 Pro, Mate 40 Pro |
| Nothing | Phone 1, Phone 2, Phone 2a |
Essential requirement: your phone must be carrier-unlocked. If you bought it on a carrier plan, check whether it's been unlocked. Phones purchased outright or from independent retailers are typically unlocked.
2. Buy the eSIM plan
Go to the website or app of your chosen provider (Airalo, Saily, Yesim):
- Select your destination country or region
- Choose a plan (GB + duration)
- Pay with card (Visa, Mastercard, PayPal, Apple Pay, Google Pay)
- Receive the QR code via email and in the app
3. Install the eSIM profile
On iPhone:
- Settings > Mobile Data > Add eSIM > Scan QR Code
- Or: Settings > Mobile Data > Add Data Plan > Scan QR Code
- Label the profile: "Travel" or "Vacation" (so you can identify it easily)
- Set mobile data to use the eSIM (not your physical SIM)
On Samsung / Android:
- Settings > Connections > SIM Manager > Add eSIM
- Scan the QR code
- Label the profile
- Set mobile data to eSIM
Important: do this at home, on Wi-Fi. Not at the airport, not on the plane, not at your destination. If something goes wrong, you have time to contact support.
At your destination
- Enable data roaming on the eSIM profile (Settings > Mobile Data > eSIM > Data Roaming = ON). This sounds counterintuitive, but without this setting, the eSIM won't connect
- Your phone detects the local network automatically — usually within seconds of landing
- Verify that mobile data is set to eSIM, not your home SIM
- Done — you have internet
When you return home
- Disable the eSIM profile
- Set mobile data back to your home SIM
- You can delete the eSIM profile or keep it for your next trip to the same region
Destination-specific quirks — what you need to know
Turkey — BTK website blocks
Since July 2025, Turkey's telecommunications authority (BTK) has blocked access to the websites and apps of major eSIM providers: Airalo, Holafly, Saily, Nomad, Instabridge, Alosim, BNESIM, Mobimatter, Ubigi, and Roamless. The block only applies to users inside Turkey — the websites work normally from any other country.
What this means in practice:
- eSIMs purchased before arrival work perfectly — the block doesn't affect already-installed eSIMs
- You CANNOT buy or top up an eSIM from within Turkey — the websites won't load
- Buy 20-30% more GB than you think you need — you have no plan B if you run out
- A VPN might bypass the block in some cases, but it's not guaranteed
Switzerland — the geographic trap
Switzerland is surrounded by the EU but is NOT part of free EU roaming. Many travelers flying to Geneva or Zurich assume roaming is included — and receive bills for hundreds of euros. A 3-5 GB eSIM for Switzerland costs USD 10-15 and eliminates the risk entirely.
Albania and the Western Balkans
Albania, Serbia, Montenegro, Bosnia, Kosovo, and North Macedonia are extremely popular summer destinations. NONE are in the EU, so roaming is expensive. A regional "Europe" plan from Airalo or Saily usually covers these countries, but check each country individually — Albania and Kosovo can be missing from some packages.
USA — watch out for rural areas
US eSIM networks (T-Mobile, AT&T) are excellent in cities and along highways but can be weak in national parks, rural western areas, and some mountain zones. For a road trip, download offline maps and count on Wi-Fi in transit towns.
Dubai (UAE) — VoIP blocked
In the United Arab Emirates, VoIP services (WhatsApp Calling, FaceTime, Skype) are partially blocked or restricted. You can send WhatsApp text messages, but voice/video calls may not work without a VPN.
10 common eSIM mistakes
1. Buying the eSIM at the airport or after landing In Turkey it's impossible (websites are blocked). In other countries, the stress of configuring at queues isn't worth it. Buy and install from home.
2. Confusing Switzerland or UK with the EU Both are non-EU. Roaming is not free. An eSIM eliminates the risk.
3. Forgetting to enable "Data Roaming" on the eSIM Without this setting, the eSIM won't connect. It's the most common cause of "my eSIM isn't working."
4. Leaving mobile data on your home SIM After installing the eSIM, you must set mobile data to the eSIM profile, not your home carrier. Otherwise, you're consuming expensive carrier roaming.
5. Buying too little data A 1 GB plan sounds cheap but runs out in 1-2 days if you use social media. Rule: minimum 3 GB per week for moderate users.
6. Not downloading offline maps Google Maps uses 100-200 MB/hour during navigation. Offline maps = 0 MB. Save 1-2 GB over a one-week vacation.
7. Leaving photo sync on Google Photos and iCloud can automatically upload photos to the cloud, consuming GBs without you realizing. Disable cloud upload on mobile data.
8. Comparing "unlimited" with "unlimited" Many "unlimited" plans have a fair use policy: after 2-5 GB per day, speeds drop to 512 kbps (unusable for navigation or social media). A fixed 5-10 GB plan is more transparent.
9. Choosing a regional plan when a local one works Regional plans (Europe, Asia) cost more per GB than single-country plans. If you're visiting one country, the local plan is always cheaper.
10. Ignoring free Wi-Fi Hotels, cafes, restaurants, airports, metro systems — free Wi-Fi is everywhere in 2026. Use it for downloads, streaming, and video calls. The eSIM is for when you're on the move.
Special cases
Families with children
Options for connecting the whole family:
- Hotspot from one phone: a single eSIM with a 10-20 GB plan, shared via hotspot with other phones/tablets. Cheapest option, but drains the source phone's battery
- Individual eSIM on each phone: more expensive, but everyone has independent internet. Useful if you split up during the day
- Tablets and older phones: if they don't support eSIM, connect them via hotspot from the phone with the eSIM
Tip: for kids on planes or at the hotel, download Netflix/YouTube/Disney+ content on Wi-Fi before departure.
Digital nomads and work-and-travel
If you work remotely, needs are different:
- Minimum 15-20 GB per week (video calls, cloud, email with attachments)
- Yesim unlimited (USD 8.40-57.60 for 1-30 days) or Holafly unlimited (USD 74.90 for 30 days) are the best options
- A rented pocket Wi-Fi at your destination can be a more stable alternative for video conferences
- Check whether the plan allows tethering/hotspot — not all do
Multi-country trips (3+ countries)
If you're visiting multiple countries on a single trip:
- A regional plan (Europe 39 countries, Asia, etc.) is more convenient than separate country plans
- Yesim global (5 GB / 30 days at USD 28.80, 147 countries) or Airalo global are solid options
- The per-GB price is higher than local plans, but you gain simplicity
Cruises
On a cruise ship, onboard internet is expensive (USD 10-25/day) and slow. An eSIM works only in ports, when the ship is docked and your phone connects to the terrestrial network. At sea, the eSIM has no signal.
Optimal strategy: buy a regional plan covering the countries in your itinerary. Use onboard internet only for urgent messages. At each port, activate the eSIM and do everything you need (upload photos, messages, navigation).
WiFi Calling — the free alternative to roaming calls
WiFi Calling is a feature supported by most modern phones and carriers. When enabled, your phone uses Wi-Fi instead of the cellular network for calls and texts.
Why it matters for travelers
When you're outside the EU with an eSIM active for data only:
- Incoming calls on your home SIM can generate roaming charges (your carrier charges for call forwarding)
- WiFi Calling eliminates these charges — calls travel over the internet, not the cellular network
- Works on hotel Wi-Fi and on the eSIM's data connection
How to enable
On iPhone: Settings > Phone > WiFi Calling > Enable on This iPhone On Android: Settings > Connections > WiFi Calling > ON
Note: not all carriers support WiFi Calling while roaming. Check with your carrier before departure.
Alternative: WhatsApp/Telegram calls
If WiFi Calling isn't available, voice calls through WhatsApp or Telegram use only 35-50 MB/hour and are completely free. Audio quality is excellent on 4G/LTE. The only limitation: both parties need the app installed.
eSIM vs Pocket WiFi — which to choose
A Pocket WiFi (portable hotspot) is a small device you rent at your destination that provides Wi-Fi for up to 5-10 devices simultaneously.
| Criterion | eSIM | Pocket WiFi |
|---|---|---|
| Cost | USD 4-30 | USD 5-15/day (rental) |
| Connected devices | 1 (+ hotspot) | 5-10 |
| Battery | Phone battery | Separate battery (4-8 hours) |
| Setup | 2-3 minutes, from home | Pick up at airport or courier |
| Portability | In your pocket | Another object to carry |
| Works without charge | Yes (it's on your phone) | Needs to be charged and powered on |
eSIM wins for: solo travelers, couples, anyone who wants maximum simplicity. Pocket WiFi wins for: large groups (3+ people), families with many devices, anyone who needs stable internet for work.
Security and privacy — what to know
Are eSIMs secure?
Yes, equally secure as a physical SIM. The eSIM profile is stored in the phone's secure chip and cannot be cloned or copied without physical access to the device.
VPN — worth it with an eSIM?
Yes, in certain situations:
- Public Wi-Fi (airport, cafe, hotel) — a VPN protects your data from interception
- Dubai/UAE — VoIP (WhatsApp Calling, FaceTime) is blocked without a VPN
- China — access to Google, WhatsApp, Instagram is blocked without a VPN
Saily includes basic VPN protection in its price. Yesim includes VPN on iOS. For full protection, a separate NordVPN or ExpressVPN subscription is recommended.
Is my personal data safe?
Reputable eSIM providers (Airalo, Saily, Yesim, Holafly) don't monitor or sell your browsing data. But — as on any network — unencrypted connections (HTTP, not HTTPS) can theoretically be intercepted. Use a VPN on public networks and check for HTTPS in your browser.
How the costs compare — a concrete example
Scenario: 10-day trip to Turkey, 2 people
| Option | Total cost | Notes |
|---|---|---|
| Carrier roaming (2 GB per person) | EUR 10,000-20,000+ | Completely unrealistic |
| Airalo eSIM 5 GB x 2 | USD 32 (~EUR 30) | Sufficient with hotel Wi-Fi |
| Saily eSIM 5 GB x 2 | USD 28 (~EUR 26) | Cheapest option |
| Yesim unlimited 10 days x 2 | ~USD 50 (~EUR 46) | No data worries |
| Holafly unlimited 10 days x 2 | USD 73.80 (~EUR 68) | Most expensive, but simple |
| Local Turkish SIM at airport x 2 | ~USD 40 (~EUR 37) | Must remove your home SIM |
The conclusion: an eSIM is 400-500 times cheaper than carrier roaming and more convenient than a local SIM.
Scenario: 7-day London trip, 1 person
| Option | Total cost | Notes |
|---|---|---|
| Carrier roaming (1 GB) | EUR 5,000-15,000 | Absurd |
| Saily eSIM 5 GB | USD 11.69 (~EUR 11) | More than enough with London Wi-Fi |
| Airalo eSIM 3 GB | USD 11 (~EUR 10) | Sufficient for moderate use |
| Yesim unlimited 7 days | ~USD 20 (~EUR 18) | Peace of mind |
Scenario: 2-week Southeast Asia tour (Thailand + Vietnam + Cambodia)
| Option | Total cost | Notes |
|---|---|---|
| Three local SIMs | ~USD 15-25 total | Cheapest, but swap SIM at each border |
| Airalo Asia regional 5 GB | USD 15-20 | One plan covers all three countries |
| Yesim global 5 GB / 30 days | USD 28.80 | Covers everything, simple |
| Holafly unlimited 15 days | ~USD 55 | Most expensive, no data worries |
For multi-country trips, the regional or global eSIM wins on convenience even if it costs slightly more per GB than individual local plans.
Additional FAQ
What's better: an eSIM or a local physical SIM?
eSIM wins on convenience: buy from home, no SIM swapping, keep your home number active. Local SIM wins on price: in some countries (Thailand, Vietnam, India), airport SIM cards are extremely cheap (USD 2-5 for 15-30 GB). But you need to remove your home SIM, lose incoming calls and texts, and sometimes need passport registration.
Does an eSIM work on a plane?
Not during flight (no cellular network at altitude). It activates automatically upon landing. Some planes have onboard Wi-Fi, but that's a separate service offered by the airline, unrelated to eSIM.
Can I have multiple eSIMs installed at once?
Yes. Most phones support 5-10 installed eSIM profiles, but you can only have 1-2 active simultaneously. You can have an eSIM for Turkey, one for the UK, and one for the US — activate them one at a time depending on your destination.
Does the eSIM drain extra battery?
Minimally. Two active SIM profiles (physical + eSIM) consume ~5-10% more battery per day than a single profile. The difference is negligible in practice.
What do I do if the eSIM doesn't connect at my destination?
- Verify that "Data Roaming" is enabled on the eSIM profile
- Check that mobile data is set to eSIM (not your home SIM)
- Restart your phone
- Manually select the network (Settings > Network > Manual operator selection)
- Contact the provider's support via chat (on airport Wi-Fi)
Does the eSIM expire if I don't use it?
Validity typically starts at first network connection (upon landing), not at the time of purchase. Some plans also have an absolute expiration date (e.g., 90 days from purchase). Check the plan terms.
The bottom line — the 30-second rule
- Traveling within the EU? You don't need anything — roaming is free
- Traveling outside the EU? Buy an eSIM 1-2 days before departure
- Going to Turkey? Buy the eSIM BEFORE you leave — provider websites are blocked in Turkey
- How much to buy? 3 GB for a light week, 5 GB for moderate, 10 GB for heavy users
- Which provider? Airalo for maximum flexibility, Saily for best value, Yesim/Holafly for unlimited
Search and compare eSIM plans for your destination below.
Întrebări frecvente
- Do I need an eSIM within the EU?
- Usually not. Since 2017, roaming in all 27 EU countries plus Iceland, Liechtenstein, and Norway is included in your home plan at no extra cost. An eSIM only makes sense if your plan has very limited data or you exceed the fair use cap (formula: plan price divided by EUR 1.00, multiplied by 2).
- How much does carrier roaming cost outside the EU?
- Extremely expensive. European carriers typically charge EUR 5-15 per MB outside the EU — that translates to EUR 5,000-15,000 per GB. A single GB in carrier roaming costs more than 100-200 eSIM plans. An eSIM with 5 GB costs USD 12-18 for the same destinations.
- Can I keep my regular phone number while using an eSIM?
- Yes. Modern phones support Dual SIM: your physical SIM stays active for calls, texts, and bank verification codes, while the eSIM handles mobile data. Both work simultaneously. Setup takes 2-3 minutes in phone settings.
- Does my phone support eSIM?
- Most phones from 2018 onward: iPhone XS/XR and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer, Xiaomi 13+, OnePlus 11+. Check Settings > Network/SIM for an 'Add eSIM' option. Your phone also needs to be carrier-unlocked.
- How much data do I need for a one-week vacation?
- Depends on usage. Light (maps + WhatsApp): 1-2 GB. Moderate (+ social media, Uber): 3-5 GB. Heavy (+ Instagram Reels, TikTok): 5-7 GB. Digital nomad (remote work): 10-20 GB. Add a 20-30% buffer for background apps.
- What if I run out of data on my eSIM while traveling?
- Buy an additional plan from the provider's app (Airalo, Saily, Yesim) — installs in 2 minutes on hotel Wi-Fi. EXCEPTION: in Turkey, you cannot purchase eSIMs from inside the country (websites are blocked by the BTK regulator). This is why buying enough data before departure is critical.
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