We’ve all been there. You land, switch off flight mode, and immediately receive a message from your UK network: ‘You’re now roaming. Charges apply.’ Before you’ve cleared passport control, the meter is running.
eSIM technology has made that experience optional. You can purchase a local data plan before you leave home, install it in minutes, and arrive already connected, at a fraction of what your network charges for roaming.
The catch: with dozens of providers on the market and plans that vary wildly in price, coverage, and model, choosing the right eSIM is genuinely confusing. We’ve compared every major provider on coverage, per-GB value, flexibility, and the features that actually get used in the field, so you can make a confident choice in minutes.
Use our comparison tool to filter by destination and budget, or read our full provider reviews below.
Does Your Phone Support eSIM? Check This First
Not all devices support eSIM. Verify your handset before purchasing any plan:
iPhone: Settings > Mobile Data > Add eSIM. Compatible from iPhone XR and XS onwards (all iPhone 11 models and later are universally compatible).
Android: Settings > Connections > SIM Manager > Add eSIM. Most flagship Samsung Galaxy (S20+), Google Pixel (3a+), and premium Android devices from 2019 onwards are supported.
Carrier-locked phones: If your phone was purchased directly from a UK network on contract, it may be carrier-locked, preventing eSIM installation from other networks. Contact your provider to request an unlock (usually free after 30 days on contract).
Best eSIM Providers 2026: Quick Verdict
Best for security: Saily VPN, ad blocker, and malware protection built in at no extra cost
Most countries covered: Airalo, 200+ destinations; best for unusual or remote locations
Best for unlimited data: Holafly, unlimited-only plans, no data anxiety
Best single eSIM for all travel: Jetpac, one install, premium carriers, credits never expire
Best value for long trips: Maya Mobile, plans valid up to 180 days
Best for flexible multi-country travel: Roamless, pay-as-you-go or fixed; in-app calling; ranked 2nd fastest
Best for business travel: Nomad, VAT invoices, reliability, 1GB free trial
| Provider | Countries | From | Best for | Key differentiator |
|---|---|---|---|---|
| Saily | 200+ | £1.99 | Security-focused travellers | Built-in VPN, ad blocker and malware protection from the NordVPN team |
| Airalo | 200+ | ~£4/GB | Multi-country and remote destinations | Widest global reach; regional bundles; voice/SMS on Discovery+ |
| Holafly | 200+ | £19.90/5 days | Heavy data users and content creators | Unlimited data only, no rationing, no data counter |
| Jetpac | 190+ | From ~£1/GB | Frequent globe-trotters | One eSIM for all future trips; premium carriers (AT&T, Verizon, Vodafone); credits never expire |
| Maya Mobile | 200+ | £12.99/10GB | Budget and long-stay travellers | Plans valid up to 180 days, best value for extended travel |
| Roamless | 200+ | Pay-as-you-go | Flexible multi-country travellers | Single global eSIM; RoamlessFlex credits never expire; in-app calling; 2nd fastest in independent testing |
| Nomad | 165+ | Mid-range | Business travellers | VAT invoices for expenses; consistent reliability; 1GB free trial |
Provider Reviews
Saily: Best eSIM for Security and Privacy
| Features | |
| Countries | 200+ |
| Plans | 1GB–50GB fixed data + Unlimited (Ultra Plan) |
| Starting from | £1.99 |
| Best for | Privacy-conscious travellers and remote workers |
| Notable | Ultra Plan adds airport lounge access + NordVPN |
Saily’s differentiator is embedded, not add-on: security is part of the product itself. Built by Nord Security, the team behind NordVP, Saily bundles VPN encryption, ad blocking, and malware protection into every data plan at no extra cost.
In practice, this matters. Airport WiFi in Bangkok, hotel networks in New York, co-working spaces in Lisbon, all public networks where your data could be exposed. Most eSIM providers leave you to manage this separately. Saily handles it automatically.
The ad blocker also reduces data consumption by up to 28% according to Nord’s own figures,meaning your 5GB plan genuinely stretches further in real-world use.
For frequent travellers, the Ultra Plan (from £59.99/month) bundles 30GB of global data, the full security suite, NordVPN subscription, and airport lounge access, a compelling package for anyone already paying for a VPN separately.
Strengths
- VPN, ad blocker and malware protection included, no extra app, no extra cost
- Single persistent eSIM tops up across all 200+ destinations, no reinstalls between trips
- Virtual location feature for accessing UK streaming services abroad
- Ad blocking reduces data consumption by up to 28%
- Ultra Plan adds airport lounge access for frequent flyers
Limitations
- Newer brand than Airalo, track record is strong but shorter
- Unlimited plans include daily speed reduction after heavy usage
Airalo: Best eSIM for Multi-Country Trips and Global Reach
| Features | |
| Countries | 200+ |
| Plans | 1GB–50GB + Discovery+ (voice and SMS) |
| Starting from | ~£4/GB |
| Best for | Multi-destination trips and digital nomads |
| Users | 20 million+ worldwide |
With over 20 million users and coverage spanning 200+ countries, Airalo is the most established travel eSIM on the market. Their reach remains unmatched, including remote Pacific islands and niche destinations where other providers simply don’t operate.
Regional bundles are where Airalo earns its top recommendation for multi-country trips. One European plan covers 30+ nations. The same logic applies for Asia, the Middle East, Africa, and Latin America. A three-country itinerary becomes one purchase, not three, and you never need to switch eSIMs at a border.
Discovery+ plans add a genuine differentiator: a real local phone number for calls and SMS. Useful when calling a hotel, booking a restaurant, or reaching local services that don’t accept WhatsApp messages.
Strengths
- Unmatched destination reach, safest choice for unusual or remote destinations
- Regional bundles: one plan, 30+ countries
- Voice calling and SMS available via Discovery+ plans
- Proven reliability from the market leader with 20 million+ users
- Free trial data credits for new users on select destinations
Limitations
- Voice and SMS require the premium Discovery+ tier
- Per-GB pricing higher than newer competitors for straightforward single-country trips
Holafly: Best eSIM for Unlimited Data
| Features | |
| Countries | 200+ |
| Plans | Unlimited data exclusively (1–90 day plans) |
| Starting from | £19.90 for 5 days |
| Best for | Content creators, heavy users, remote workers |
| Subscription | Holafly Plans: £64.90/month, 160+ countries |
Holafly’s entire offering is unlimited data. There is no fixed-data option, no rationing, no data counter to check. Choose a destination, choose how many days you need coverage (1 to 90 days), and use as much data as you like throughout.
For content creators uploading photos and videos, professionals on constant video calls, or anyone who simply refuses to think about data while travelling, Holafly eliminates that cognitive overhead entirely. It is not always the cheapest option, but for consistent heavy users it frequently works out better value than purchasing multiple large fixed-data plans.
Their monthly subscription (Holafly Plans, £64.90/month across 160+ countries) suits frequent travellers who prefer predictable monthly billing over trip-by-trip purchases.
Strengths
- Unlimited data, no counters, no rationing, no anxiety
- Plan durations from 1 to 90 days
- Monthly subscription option for frequent travellers
- Best choice for streaming, uploading content, and intensive cloud work
Limitations
- Higher upfront cost than fixed-data alternatives
- Speed reduction can occur with very heavy usage (continuous HD streaming)
- Poor value for light users who only need a few GB for messaging and maps
Jetpac: Best Single eSIM for Frequent Travellers
| Features | |
| Countries | 190+ |
| Plans | Global credit system (pay-as-you-go) |
| Starting from | From ~£1/GB depending on destination |
| Best for | Frequent flyers and business travellers |
| Carrier partners | AT&T, Verizon, Vodafone, KDDI |
Jetpac’s model is simple: install one eSIM, never install another. Top up data credits that work across 190+ countries, and those credits never expire. Whether you’re in Tokyo next month or Toronto next year, the same eSIM is ready.
Carrier partnerships are genuinely premium: AT&T and Verizon in the USA, Vodafone across Europe, KDDI in Japan. You are on the same networks as local residents, not a secondary wholesale tier and the speed difference is noticeable.
The safety net feature is worth highlighting: even after your data is completely exhausted, you retain free access to WhatsApp, Google Maps, Uber, and Grab. If you are navigating an unfamiliar city with no remaining data, you can still find your way and book transport home.
Strengths
- One eSIM install lasts all future travel, zero setup friction on repeat trips
- Data credits never expire, buy ahead, use whenever
- Premium carrier network: AT&T/Verizon (USA), Vodafone (Europe), KDDI (Japan)
- Free WhatsApp, Google Maps and Uber access when data runs out
Limitations
- Per-GB rate varies significantly between countries
- Pay-as-you-go can cost more than flat-rate plans for extended single-country stays
Maya Mobile: Best Value eSIM for Budget and Long-Stay Travel
| Features | |
| Countries | 200+ |
| Plans | 1GB–40GB; unlimited options available |
| Starting from | ~£12.99 for 10GB |
| Best for | Budget travellers, backpackers, extended trips |
| Max validity | 180 days on many destination plans |
Maya Mobile competes on two things: price per GB and plan validity. On pricing they are consistently among the market’s lowest without compromising on carrier quality. On validity, they are in a category of their own, up to 180 days on many destination plans.
That 180-day validity is transformational for certain travel styles. A backpacker on a six-month journey can purchase one plan and stretch it across the entire trip rather than buying six consecutive 30-day plans. For slow travellers spending weeks per destination and supplementing with accommodation WiFi, a single long-validity plan often costs less overall.
Maya’s global plan covers 119 countries with auto-renewal, combining budget pricing with multi-destination convenience.
Strengths
- Among the lowest per-GB pricing on the market
- Plan validity up to 180 days, unique in this space
- 5G connectivity included where infrastructure exists
- Global plan with auto-renewal for regular travellers
Limitations
- Fair usage policies less clearly documented than some rivals
- Customer support response times can be slower than competitors
Roamless: Best eSIM for Flexible, Multi-Country Travel
| Features | |
| Countries | 200+ |
| Plans | RoamlessFlex (pay-as-you-go) + RoamlessFix (fixed bundles) |
| Starting from | Pay-as-you-go, varies by country |
| Best for | Digital nomads, country-hoppers, flexible travellers |
| Speed ranking | 2nd fastest in independent testing (150 tests, 22 providers) |
| App rating | 4.6/5 from 4,200+ reviews |
| Notable | Cuba coverage; Africa plan covers 46 countries |
Roamless offers something no fixed-plan provider can: genuine pay-as-you-go flexibility on a single global eSIM, with the option to switch to fixed bundles when that makes better financial sense.
RoamlessFlex works like a digital data wallet. Add credit, use data in any of 200+ countries, and pay only for what you consume. Your balance never expires, ideal for sporadic travellers or anyone making an unplanned detour. RoamlessFix is their conventional fixed-plan model, priced competitively against Airalo and Saily, better suited for longer stays in a single destination.
The performance credentials are independently verified: in testing across 150 speed tests from 22 different providers, Roamless ranked second overall, and first in three of the seven individual countries tested.
Two practical standouts worth flagging: Cuba coverage (one of very few providers that supports it), and in-app international calling via RoamlessFlex, no separate VoIP app required.
Strengths
- Single global eSIM: install once, auto-switches between country networks at borders
- RoamlessFlex credits never expire, no wasted data at the end of any trip
- Ranked 2nd fastest eSIM in independent testing across 22 providers
- In-app international calling available on RoamlessFlex (requires min. $5 credit)
- Cuba coverage, one of very few providers that supports it
- Africa fixed plan covers 46 countries, far broader than most competitors
Limitations
- Global fixed plan covers 122 countries, less than the 200+ covered by pay-as-you-go
- No live chat support, email only (though responses are reportedly fast)
- Pay-as-you-go per-GB rate is higher than fixed plans for heavy users staying in one country
Nomad: Best eSIM for Business Travellers
| Features | |
| Countries | 165+ |
| Plans | Fixed data 500MB–20GB |
| Starting from | Mid-range |
| Best for | Corporate travellers and expense-claiming professionals |
| Trial | 1GB free, 48 destinations, 3 days |
Nomad does not compete on price. They compete on reliability and professional usability, and for business travellers, that is the right trade-off.
Their key differentiator: proper VAT invoices compatible with corporate expense management systems. No other major eSIM provider offers this as standard. For professionals who need to reclaim connectivity costs through expenses, Nomad is the practical recommendation.
Coverage focuses on major business corridors, European capitals, North American business centres, Asian financial hubs. Customer support understands urgency: when you land for a same-day meeting, connection issues need fast resolution.
New users can trial 1GB free across 48 destinations (valid 3 days) before committing to a paid plan.
Strengths
- VAT invoices for corporate expense claims, unique in the eSIM market
- Reliable, consistent connectivity in major business travel destinations
- Customer support calibrated for urgent professional situations
- Risk-free 1GB trial across 48 destinations
Limitations
- Fewer total countries than Airalo, Saily, or Roamless
- Premium pricing reflects the business positioning
Which eSIM Is Right for You?
By traveller type
Occasional holiday-maker: Airalo for multi-destination or unusual locations; Maya Mobile for single-country value on a budget.
Frequent flyer or business traveller: Jetpac for zero friction on repeat travel; Nomad for corporate expense claims and VAT documentation.
Digital nomad: Roamless for maximum flexibility across countries and borders; Saily for security on public WiFi in co-working spaces and cafes.
Backpacker on a long trip: Maya Mobile, 180-day validity means one purchase covers months of travel.
Content creator: Holafly unlimited, uploading, streaming, and posting without ever checking a data counter.
Multi-country hopper: Roamless or Jetpac, both use a single eSIM that works across all destinations without reinstalling.
By data usage
Check your current usage: Settings > Mobile Data on iPhone, or Settings > Network > Data Usage on Android.
- Light use (messaging, maps, occasional browsing): 2–3GB per week, entry plans from any provider
- Moderate use (social media, photos, video calls): 5–8GB per week, mid-tier fixed plans
- Heavy use (streaming, uploading, constant cloud work): 15GB+ per week, Holafly unlimited or large plans from Saily or Roamless
Best eSIM by Destination: Quick Reference
| Destination | Top pick | Runner-up | Why |
|---|---|---|---|
| Europe (multi-country) | Airalo | Saily | Regional bundles covering 30+ nations; Saily for security on public WiFi |
| USA | Jetpac | Maya Mobile | AT&T/Verizon partnerships; Maya for budget longer stays |
| Canada | Jetpac | Airalo | Premium carrier network; Airalo regional if combining USA + Canada |
| Japan | Airalo | Roamless | Strong local carrier access; Roamless for single-eSIM global trips |
| Southeast Asia | Roamless | Airalo | Roamless excels for country-hopping; auto-switches networks at borders |
| Australia | Saily | Holafly | Solid Saily coverage; Holafly for heavy streamers on long stays |
| Cuba | Roamless | — | One of very few providers with confirmed Cuba coverage |
| Middle East / Africa | Airalo | Roamless | Airalo’s widest reach; Roamless Africa plan covers 46 countries |
| Latin America | Saily | Roamless | Saily security on tourist hotspot WiFi; Roamless for country-hopping |
Planning a specific trip? Use our travel eSIM comparison tool to filter live plans by destination and budget.
eSIM Travel FAQs
What is an eSIM and how does it work?
An eSIM (embedded SIM) is a digital SIM card built into your smartphone. Instead of swapping a physical chip, you scan a QR code to download a mobile data plan directly onto your device. It works alongside your regular UK SIM, so you keep your home number active for calls and texts while the eSIM handles data abroad, no roaming charges, no SIM swapping.
Will my phone support an eSIM?
Most smartphones released after 2018 support eSIM. On iPhone: Settings > Mobile Data > Add eSIM (compatible from iPhone XR and XS onwards, all iPhone 11 and later models are universally compatible). On Android: Settings > Connections > SIM Manager > Add eSIM. Works on most flagship Samsung Galaxy (S20+), Google Pixel (3a+), and premium Android devices from 2019 onwards.
Can I use a travel eSIM on a carrier-locked phone?
Not until it’s unlocked. Carrier locking prevents any SIM, including eSIMs, from networks other than your original carrier. Contact your UK network provider to request an unlock (usually free after 30 days on contract). Once unlocked, eSIMs install and work normally.
What is the difference between RoamlessFlex and RoamlessFix?
RoamlessFlex is Roamless’s pay-as-you-go model: add credit to a digital wallet and pay only for the data you actually use across 200+ countries. Your balance never expires. RoamlessFix is their standard fixed-data plan model, similar to Airalo or Saily, where you purchase a set data allowance for a specific country or region at a fixed price. Flex gives maximum flexibility and is the only model that includes in-app calling; Fix is more cost-effective for longer stays in one destination where you can predict your usage.
Which eSIM provider covers the most countries?
Airalo, Holafly, Maya Mobile, Saily, and Roamless all cover 200+ countries and destinations. Airalo has the strongest track record for remote destinations. Roamless is notable for Cuba coverage, which most providers don’t support, and their Africa fixed plan covers 46 countries, broader than most competitors.
Can I use my eSIM as a hotspot?
Most providers permit hotspot/tethering, letting you share your connection with a laptop or tablet. Bear in mind this draws from your data allowance significantly faster. Some unlimited plans (particularly Holafly) may cap or restrict hotspot speeds under fair usage policies, check before relying on it for work.
What happens when my data runs out mid-trip?
It depends on your provider. Jetpac allows instant in-app top-ups and provides free access to WhatsApp, Google Maps, Uber and Grab even after data is exhausted. Roamless Flex users can top up credit immediately in-app. Airalo and Saily both support easy plan top-ups. For trips where you’re uncertain about usage, buy slightly more data than you expect to need, the cost difference is usually small.
Will my UK number still work with a travel eSIM installed?
Yes. Your physical UK SIM stays active throughout, you can still receive calls, texts and two-factor authentication codes on your UK number. The eSIM provides data only. Ensure data routing in your settings directs data through the eSIM line to avoid accidentally using your UK SIM’s roaming data.
Are eSIM plans cheaper than roaming on my UK network?
In most cases, considerably cheaper. UK networks typically charge £1–£7 per day for international roaming add-ons. A 10GB eSIM plan for two weeks in Europe costs roughly £12–£20 with providers like Saily, Airalo, or Maya Mobile, the equivalent of 2–4 days of network roaming charges. For any trip longer than a few days, the savings are substantial.
Can I reuse my travel eSIM on future trips?
It depends on the provider. Jetpac and Roamless use a single-eSIM model, install once and top up credits for any future destination without reinstalling. Saily also works on a persistent eSIM you top up. Airalo, Holafly, Maya Mobile, and Nomad typically issue a new eSIM profile per plan, so each trip requires a fresh install. If minimising setup friction for repeat travel matters, Jetpac or Roamless are the right choices.
How quickly can I get connected when I land?
Most plans activate automatically when you arrive and switch on mobile data on the eSIM line. Installation itself takes 3–5 minutes: scan the QR code, download the profile, configure your data settings. Do this at home on WiFi before you travel, not at the airport. Roamless auto-switches between country networks as you cross borders with no manual action required.
