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Roaming vs eSIM: What You Really Spend in Japan, USA, Thailand and UK — International Comparison 2026
"I got back from Japan and the bill was €200." We hear it everywhere — but how true is this story for travellers from Finland, the United Kingdom or Germany? We ran the real numbers for carriers from 4 European countries, destination by destination.
In this article
- Why your roaming bill always catches you off guard
- 🇯🇵 Japan — the destination that burns through your wallet
- 🇺🇸 USA — prices vary depending on where you are in Europe
- 🇹🇭 Thailand — the "I thought it was cheap" trap
- 🇬🇧 United Kingdom — post-Brexit, roaming costs are back
- 🇫🇮 Finland — among the world's most active travellers, facing unexpected roaming fees
- 🇬🇧 UK Carriers — EE, Vodafone, O2 outside the EU
- 🇩🇪 Germany — Deutsche Telekom and O2 at top destinations
- Summary: the comparison at a glance
- FAQ — questions we always get
1. Why your roaming bill always catches you off guard
The shock bill is not an accident. It's the result of a system designed to look transparent but isn't. Whether you're from Italy, Finland, the United Kingdom or Germany — the problem is the same: extra-EU charges that silently pile up day after day.
The issue isn't just the absolute price. It's that you don't know how much you'll spend until you get home and check the bill. eSIM solves this problem at the root: you pay a fixed amount before you leave, you know exactly what you get, and there are no surprises.
The common problem for all European carriers: outside the EU, no carrier is required to apply "roaming like at home". Extra-EU rates for Japan, USA and Thailand are far higher than domestic tariffs — regardless of your home country.
2. 🇯🇵 Japan — Italian Carriers (TIM, Vodafone, WindTre)
Japan is the most popular extra-EU destination and the country where the difference between roaming and eSIM is most striking. The data below refers to Italian carrier tariffs — see the following sections for Finland, UK and Germany.
🇯🇵
Japan
Scenario: 7 days, normal use (maps, social media, video calls)
| Solution | Estimated cost 7 days | Data included | Notes |
|---|---|---|---|
TIM pay-as-you-go roaming Base extra-EU rate |
€140–210+ | Pay-per-use (~€0.007/KB) | Call from Japan to Italy: €3.02/min |
TIM in Viaggio Pass Mondo 10-day extra-EU bundle |
€30 | Limited bundle — data can run out | Overage at €1–3/MB. Watch the threshold. |
Vodafone Smart Passport+ Mondo Daily charge when used |
€42 | 500 MB/day (then throttling) | €6/day × 7 = €42. 500 MB runs out in half a day. |
Local SIM at the airport e.g. IIJmio, OCN |
€15–25 | Limited data (10–15 GB) | Airport queue, in Japanese. Manual SIM swap required. |
BLIVALE eSIM Unlimited 10 Days recommended |
Fixed price | Unlimited data, no FUP | QR code by email in 2 minutes. No queues, no surprises. |
Simply put: with Vodafone roaming at €6/day, your 500 MB runs out while you're using Google Maps to find a restaurant. After that: throttling or extra charges. With BLIVALE: streaming, maps, calls — all day, all 10 days.
3. 🇺🇸 USA — Italian Carriers (TIM, Vodafone, WindTre)
Italian carriers offer dedicated plans for the USA. But here too, the details matter: limited bundles, throttling after the threshold, and costs that add up quickly on trips of 10+ days.
🇺🇸
United States
Scenario: 10 days, remote work + tourism (New York, California)
| Solution | Estimated cost 10 days | Data included | Notes |
|---|---|---|---|
TIM in Viaggio Pass 10 GB, 500 min, 500 SMS / 30 days |
€20 | 10 GB (then €1/MB) | 10 GB runs out over 10 days of remote work. Overage charges are brutal. |
Vodafone Smart Passport+ (USA) €3/day when used |
€30 | 500 MB/day + throttling | 500 MB/day is not enough for remote work with video calls. |
WindTre pay-as-you-go extra-EU Without an active bundle |
€200+ | Pay-per-use | €0.05/MB = €50/GB. Avoid at all costs. |
Local SIM (T-Mobile, AT&T prepaid) In-store in the USA |
€20–35 | Limited data or "unlimited" with FUP | You need to get there first, find a store, and waste time. |
BLIVALE eSIM Unlimited Smart recommended |
Fixed price | Unlimited data, no FUP | Activate before you leave. You're already online when you land at JFK. |
4. 🇹🇭 Thailand — Italian Carriers (TIM, Vodafone, WindTre)
Thailand is the go-to destination for digital nomads in South-East Asia. The cost of living is low — but European carrier roaming is not.
🇹🇭
Thailand
Scenario: 10–14 days, Bangkok + islands (Koh Samui, Phuket)
| Solution | Estimated cost 10 days | Data included | Notes |
|---|---|---|---|
TIM pay-as-you-go roaming Extra-EU zone |
€200+ | Pay-per-use (€0.007/KB) | A scenario to avoid at all costs. |
TIM Business Roaming Weekly TOP Includes Thailand |
€70 | 500 MB/week (yes, 500 MB) | €35/week × 2 = €70 for 500 MB per week. Absurd. |
Local SIM (True Move, AIS, DTAC) At Bangkok airport |
€8–15 | 10–30 GB limited | Cheap but with FUP. Suvarnabhumi airport queue: 30–60 min. |
BLIVALE eSIM Unlimited Premium recommended |
Fixed price | Unlimited data, no FUP | Ideal for longer stays. Activate from home, works on landing. |
The Thailand paradox: the country has one of the best mobile networks in South-East Asia (True Move H 5G in Bangkok is extremely fast). The problem is not the local network — it's how much your Italian carrier charges you to access it via roaming.
5. 🇬🇧 United Kingdom — Italian Carriers
Post-Brexit, roaming in the United Kingdom is no longer free for many Italian carriers. TIM has abolished Roaming Like at Home for the UK. WindTre applies extra-EU rates. Only a few carriers still offer competitive conditions — but for how long?
🇬🇧
United Kingdom
Scenario: 7 days in London (tourism or business)
| Solution | Estimated cost 7 days | Data included | Notes |
|---|---|---|---|
TIM roaming UK Extra-EU rates applied |
Variable | €0.007/KB pay-per-use | TIM has abolished RLAH for the UK. Be careful. |
WindTre roaming UK Pay-per-use rate |
Variable | €0.05/MB pay-per-use | WindTre no longer includes the UK in EU roaming. |
Vodafone UK (7-day bundle) 5 GB for 7 days |
€2.99 | 5 GB (then throttling) | Competitive offer, but with FUP after 5 GB. |
Local SIM (O2, Three UK, EE) Purchase in the UK |
£5–15 | Varies by plan | Practical but requires a physical SIM swap or a second phone. |
BLIVALE eSIM Unlimited 10 Days recommended |
Fixed price | Unlimited data, no FUP | Covers the entire stay. No changes to your home SIM. |
6. 🇫🇮 Finland — Elisa, DNA, Telia
Finns are among the most active travellers in the world and have one of the most advanced domestic network infrastructures in Europe. But outside the EU, even Elisa, DNA and Telia apply significant charges — and FUP is present even for those on domestic "unlimited" plans.
The Finnish paradox: Finland has domestic plans with truly unlimited data. But as soon as you leave the EU, even Finnish travellers face extra-EU rates and strict FUP caps. Elisa, for example, no longer applies Roaming Like at Home for the UK — data roaming there is now €18.99/GB or via a "Reissunetti" 10 GB bundle at €24.99.
🇫🇮
Finland — Japan, USA, Thailand
Scenario: 7 days, normal use (maps, social media, video calls) — Elisa, DNA, Telia
| Carrier | Destination | Estimated cost 7 days | Data included | Notes |
|---|---|---|---|---|
Elisa Reissunetti bundle |
Japan / USA / Thailand | €25–50+ | Limited data bundle (e.g. 10 GB) | Without a bundle: €18.99/GB. With Reissunetti 10 GB: €24.99 — runs out in a few days of normal use. |
DNA Ulkomaan datapaketti |
Japan / USA / Thailand | €20–60+ | Data bundle (varies by plan) | DNA applies extra-EU rates for destinations outside the European area. Strict FUP on domestic plans abroad. |
Telia (Finland) Ulkomaan netti |
Japan / USA / Thailand | €20–50+ | Limited extra-EU bundle | Telia offers extra-EU bundles but with strict FUP thresholds. Reduced speed after the cap. |
BLIVALE eSIM Unlimited recommended |
190+ countries | Fixed price | Truly unlimited, no FUP | Works for Finnish users too. QR code by email, installation in 2 minutes. |
7. 🇬🇧 UK Carriers — EE, Vodafone UK, O2 outside the EU
British travellers have experienced a double shift: first Brexit reintroduced roaming costs within the EU, then extra-EU rates climbed further. EE now charges £7/day for destinations such as the USA, Japan, Australia and Thailand — meaning a week in Japan costs £49 for connectivity alone. Two weeks in Thailand: £210.
🇬🇧
United Kingdom — Japan, USA, Thailand
Scenario: 7 days, normal use — EE, Vodafone UK, O2
| Carrier | Plan | Cost 7 days (Japan/USA/Thailand) | Data | Notes |
|---|---|---|---|---|
EE (UK) Roam Abroad Day Pass |
£7/day | £49 | UK allowance (with FUP) | Activated automatically. Background apps can trigger the £7 charge without you touching your phone. |
Vodafone UK Global Roaming Extra |
£6–8/day | £42–56 | 500 MB–1 GB/day | Vodafone UK includes Thailand in its "Rest of World" zone — more accessible but still with limited data. |
O2 (UK) Travel Bolt On |
£7/day | £49 | UK allowance — capped at 2 Mbps | O2 Travel Bolt On at £7/day covers the USA, Japan, Australia, Dubai and Thailand — but all data is limited to a maximum speed of 2 Mbps. |
BLIVALE eSIM Unlimited recommended |
Fixed price | Fixed price | Truly unlimited, no FUP | No daily cap, no speed limit. Works for UK users just like everyone else. |
8. 🇩🇪 Germany — Deutsche Telekom and O2 Germany
Germany has the highest number of business travellers in Europe. Deutsche Telekom offers relatively competitive roaming options, but the details hide significant costs for destinations outside the EU.
🇩🇪
Germany — Japan, USA, Thailand
Scenario: 7–10 days, normal use — Deutsche Telekom, O2 Germany
| Carrier | Plan | Estimated cost 7 days | Data included | Notes |
|---|---|---|---|---|
Deutsche Telekom Travel Mobil World |
€9.95/day (USA/Thailand) | €70 | Domestic plan volume | Deutsche Telekom offers a DayFlat at €9.95 for the USA, Canada, Turkey and Thailand. Japan is included in the Travel Mobil World package. Activates automatically. |
Deutsche Telekom Travel Mobil World Basic |
Basic bundle | ~€25–40 | 5 GB + 200 min + 200 SMS | The Basic bundle includes 5 GB of browsing, 200 minutes and 200 SMS — suitable for light use (Maps, WhatsApp), not for remote work. |
O2 Germany Travel Day Pass |
€9.99/day | €70 | Domestic allowance (with FUP) | O2 Germany applies similar rates to Deutsche Telekom for extra-EU destinations. FUP applied after the daily threshold. |
BLIVALE eSIM Unlimited recommended |
Fixed price | Fixed price | Truly unlimited, no FUP | Ideal solution for German travellers too. Same experience, same price — regardless of country of origin. |
9. Summary: the comparison at a glance
Same destination, carriers from 4 different European countries — the result is always the same:
| Destination | Carrier roaming IT (estimate) | BLIVALE eSIM Unlimited |
|---|---|---|
| 🇯🇵 Japan (7 days) | €30–210+ depending on plan | Fixed price, unlimited |
| 🇺🇸 USA (10 days) | €20–200+ depending on plan | Fixed price, unlimited |
| 🇹🇭 Thailand (10 days) | €70–200+ depending on plan | Fixed price, unlimited |
| 🇬🇧 UK (7 days) | Variable, some plans from €2.99/7 days with FUP | Fixed price, unlimited |
The truth about carriers' "affordable" bundles: even the cheapest offers (e.g. Vodafone UK at €2.99/7 days) include limited data thresholds with throttling or extra pay-per-use charges. With BLIVALE there is no threshold. Full stop.
eSIM Unlimited BLIVALE
No FUP · 190+ countries · Instant QR · Hotspot included
10. FAQ — questions we always get
1
Can I keep my home SIM active alongside the BLIVALE eSIM?
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Yes. Dual SIM smartphones (physical + eSIM) let you receive calls and SMS on your home number while using BLIVALE data. Remember to turn off data roaming on your home SIM to avoid charges.
2
Is my phone compatible with eSIM?
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Most smartphones sold from 2019 onwards support eSIM: iPhone XS and later, Samsung Galaxy S20+, Google Pixel 3+, and many others. If in doubt, check your model's specifications or contact us before purchasing.
3
How do I install the BLIVALE eSIM?
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You receive a QR code by email within minutes of purchase. Go to Settings → Mobile network → Add eSIM → Scan QR. The full process takes about 2 minutes. You can do it comfortably from home before you leave.
4
Does it work for calls or data only?
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BLIVALE Unlimited eSIMs are data SIMs. You can make calls and video calls over the internet (WhatsApp, FaceTime, Teams) without any issues. To receive calls on your home number, keep the physical SIM active with data roaming disabled. BLIVALE also offers eSIMs with a local phone number for sending and receiving calls and SMS in-country or regionally, and in some cases worldwide, depending on the destination.
5
What if the country I'm visiting is not on the list?
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We cover over 200 countries. Each product page lists exactly which countries are supported. If you're planning a multi-country itinerary (e.g. Japan + South Korea), check coverage or contact us for the best solution.
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Fixed price · Unlimited · QR in 2 minutes · 190+ countries
