Yesim is a Swiss eSIM provider offering flexible mobile data plans for international travellers across 200+ destinations worldwide.
- Flexible plans : Standard fixed-data packages, unlimited plans, and Pay & Fly options ranging from €0.54 to €4.00 per GB depending on destination
- Wide coverage : 135+ individual countries plus regional bundles covering Europe, Asia, Africa, and the Americas with local network partnerships
- Quick activation : Download app, create account, purchase plan via Ycoins virtual currency, activate via QR code—plan countdown begins only upon arrival
- Bonus features : Built-in VPN, hotspot tethering, virtual phone numbers, and referral bonuses worth €10 in free Ycoins
- Trade-offs : Ycoins non-refundable, automatic top-up enabled by default, limited support languages, and coverage gaps in Nepal, Algeria, Mauritius, and the Maldives
Yesim is a Swiss eSIM provider offering flexible mobile data plans for international travellers across 200+ destinations worldwide.
- Flexible plans : Standard fixed-data packages, unlimited plans, and Pay & Fly options ranging from €0.54 to €4.00 per GB depending on destination
- Wide coverage : 135+ individual countries plus regional bundles covering Europe, Asia, Africa, and the Americas with local network partnerships
- Quick activation : Download app, create account, purchase plan via Ycoins virtual currency, activate via QR code—plan countdown begins only upon arrival
- Bonus features : Built-in VPN, hotspot tethering, virtual phone numbers, and referral bonuses worth €10 in free Ycoins
- Trade-offs : Ycoins non-refundable, automatic top-up enabled by default, limited support languages, and coverage gaps in Nepal, Algeria, Mauritius, and the Maldives
Yesim is a Swiss eSIM provider founded in 2019, offering mobile data plans for international travellers across 200+ destinations.
- Flexible plans : Standard fixed-data packages, unlimited plans, and Pay & Fly options ranging from €0.54 to €4.00 per GB depending on destination
- Wide coverage : 135+ individual countries plus regional bundles covering Europe, Asia, Africa, and the Americas with local network partnerships
- Quick activation : Download app, create account, purchase plan via Ycoins virtual currency, activate via QR code—plan countdown begins only upon arrival
- Bonus features : Built-in VPN, hotspot tethering, virtual phone numbers, and referral bonuses worth €10 in free Ycoins
- Trade-offs : Ycoins non-refundable, automatic top-up enabled by default, limited support languages, and coverage gaps in Nepal, Algeria, Mauritius, and the Maldives
Founded in Switzerland in 2019, Yesim has grown from roughly 300,000 customers in 2024 to a claimed one million users today. The promise is simple : buy mobile data before you leave, activate it the moment you land, and completely sidestep roaming charges. For anyone who has juggled a fistful of local SIMs across a multi-country trip, that pitch is genuinely appealing. This review covers costs, coverage, setup speed, and customer support with no fluff, and it will be direct about when this travel eSIM earns its place and when you are honestly better off looking elsewhere.
What exactly is Yesim and how does it work ?
The company behind the service
Yesim is headquartered in Switzerland, with additional offices in the United Arab Emirates and across Europe. Operating through two platforms, yesim.tech and yesim.app, it functions as a virtual eSIM provider rather than a network operator. The company partners with local carriers in each country, meaning it piggybacks on existing infrastructure rather than building its own. That distinction matters : your real-world experience depends heavily on which network partners Yesim has secured in your destination.
The three types of plans on offer
Standard plans offer fixed data allowances ranging from 3 GB to 30 GB for fixed durations of 7, 15, or 30 days. These suit most short-haul travellers who want predictable spending. Unlimited plans provide uncapped data for set periods at a higher price point, useful for heavier users. The third option, the Pay & Fly plan (formerly called International eSIM), charges a fixed rate per GB consumed, covering over 100 countries under a single purchase. It suits spontaneous itineraries where data needs are hard to predict in advance.
Yesim pricing and the Ycoins system : what it actually costs
Standard package prices by destination
For 2026, pricing in the United States runs approximately $17.01 for 10 GB over 30 days, $21.01 for 20 GB, and $25.01 for 30 GB. The North America regional plan covers the United States, Canada, and Mexico at 12 GB for 30 days for roughly $22.01. The Global Plus plan, spanning 136 or more countries, costs around $24.01 for 5 GB over 30 days.
| Destination | Data | Duration | Price (approx.) |
|---|---|---|---|
| United States | 10 GB | 30 days | $17.01 (€14.45) |
| United States | 20 GB | 30 days | $21.01 (€17.85) |
| United States | 30 GB | 30 days | $25.01 (€21.25) |
| North America (3 countries) | 12 GB | 30 days | $22.01 (€18.70) |
| Global Plus (136+ countries) | 5 GB | 30 days | $24.01 (€20.40) |
Certain destinations deliver strong value : Turkey and the United Kingdom both come in under €2 per GB on standard packages, making them genuinely competitive options for budget-conscious travellers.
Unlimited and Pay & Fly pricing
Unlimited plans for the United States start at around €7 for a single day and climb to €210 for a full 30-day period. That upper figure is steep. The Pay & Fly model is more nuanced : Turkey sits at just €0.98 per GB, Thailand at €1.64, the United States at €1.73, Canada at €2.36, and Japan at €4.00. France starts surprisingly low at $0.54 per GB. Starting prices for Asia show similar range : Japan from $1.40, Thailand from $2.30, and South Korea from $1.90.
How the Ycoins virtual currency actually works
Yesim uses an internal Ycoins virtual currency where 100 Ycoins equal €0.81 or exactly $1.00. Users top up in increments between 1,000 and 15,000 Ycoins. A first purchase unlocks €5 in free Ycoins, and sharing a referral code brings in €10 more, which helps on a tight travel budget. Two friction points deserve attention. Ycoins are non-refundable and locked inside the Yesim ecosystem, so overbuying means losing money. Worse, automatic top-up is enabled by default : switch it off manually before you forget, or the system will charge your card without a prompt.
Coverage and countries : where Yesim really works
The ten regional plans and global reach
Yesim offers regional plans across ten groupings : Europe (31 countries), Asia-Pacific (15), North America (3), South America (11), the Caribbean (14), the Middle East (8), Africa (15), Scandinavia (6), Central Asia (6), and Southeast Asia (8). Two global plans extend to 147 countries and 82 countries respectively. Single-destination coverage reaches over 135 countries, with more than 200 destinations accessible when regional packages are included.
| Region | Countries covered |
|---|---|
| Europe | 31 |
| Asia-Pacific | 15 |
| Southeast Asia | 8 |
| Africa | 15 |
| Caribbean | 14 |
Performance in popular destinations
Yesim’s network partners in the United States include T-Mobile and Verizon. In Thailand, the local operator is AIS. Turkey is covered through Türk Telekom, Turkcell, and Vodafone, giving solid redundancy. In major cities and tourist destinations across Europe, performance handles maps, email, messaging, web browsing, and ride-hailing apps without issue. Rural performance is more variable and ties directly to the local carrier’s infrastructure rather than anything Yesim controls.
Destinations where coverage is less reliable
Recurring negative reports cluster around specific locations. In Algeria, multiple users describe receiving only 3G service across four different networks, none of which functioned properly despite paying around €20 for a seven-day plan. In Mauritius, network outages lasting several hours appear repeatedly in user feedback. Nepal is a sharper cautionary tale : the eSIM simply did not work, and travellers ended up buying a local SIM for a fraction of the price. The Maldives offered a stable signal on the main islands but speeds slow enough to handle only email and WhatsApp. Checking destination-specific reviews before buying is essential for any off-the-beaten-track itinerary.
Speed and network performance : 5G, 4G and real-world results
5G availability across the network
5G connectivity is available across most compatible destinations, but actual access depends on the country and the specific network partner in place. Some destinations top out at 4G or LTE. Yesim’s design priority is reliable travel connectivity rather than maximum throughput, which is a reasonable trade-off for most travellers but a genuine limitation for those planning remote work, large video uploads, or sustained laptop tethering.
What speeds look like in practice
In major European cities and busy tourist zones, network performance comfortably handles everyday tasks : pulling up Google Maps with the kids in tow, checking accommodation details from the airport, messaging the babysitter, booking a last-minute train. Speed does vary noticeably between countries and between carrier partnerships. Rural areas perform according to local infrastructure, not the Yesim brand. For typical travel tasks, the service delivers. For anything data-intensive, temper expectations.
Setting up your Yesim eSIM : installation and compatible devices
How to install your eSIM in five steps
The installation setup follows a clear sequence. First, download the Yesim app on iOS or Android. Second, create an account via email or Google login. Third, top up the account with Ycoins. Fourth, choose and purchase a plan. Fifth, install the eSIM using a QR code or automatic activation. One genuinely useful detail : the eSIM only activates upon arrival in the destination country, so plan days do not start counting down while you are still in transit. That prevents wasted data on long connecting flights.
Devices that are compatible with Yesim
The compatibility check is worth doing before purchasing. Apple support runs from iPhone XR through to iPhone 16, though some dual-SIM models may not support eSIM. Samsung covers Galaxy S20 through S25, Galaxy Note 20, Galaxy Z Flip, and Z Fold, with US versions of the S20 and Note 20 excluded. Google Pixel 3 through Pixel 9 are supported. Huawei, Oppo, Motorola Razr, Xiaomi, and Sony devices are also compatible. Every device must be carrier-unlocked before buying any plan.
- Download the Yesim app (iOS or Android)
- Create an account with email or Google login
- Top up your account with Ycoins
- Choose and purchase your plan
- Install the eSIM via QR code or automatic activation
Extra features worth knowing about
Built-in VPN, hotspot, and virtual numbers
Three bonus features come bundled inside the app. The free built-in VPN secures browsing on public Wi-Fi, useful in airports or co-working spaces. Tethering enables users to share their mobile data connection via hotspot, handy when travelling with a partner or child who needs internet access on a second device. The virtual phone numbers service provides numbers from the Netherlands, the United States, Canada, and Israel, allowing users to receive OTP codes and verification texts without exposing a personal number, which matters for anyone managing work accounts on the road.
Payment methods accepted
The range of accepted payment methods is unusually broad : Visa, Mastercard, and American Express cards, PayPal, Google Pay on Android and web, Apple Pay on iOS, Binance Pay, cryptocurrency payments, Aphapay, and Ycoins directly. Prices display in euros, dollars, and pounds sterling, removing currency guesswork for travellers from different markets. A 30-day refund applies to any unused eSIM, contactable via the app or email.
What Yesim gets right : genuine strengths
Convenience and speed of activation
The core strength here is eliminating friction. Data plans are ready at the gate; plan days only begin counting once you actually land. For family trips, this is particularly valuable : one person can have working data within seconds of touching down, ready to call the transfer, pull up accommodation details, or check the train connection. Regional plans remove the need to buy separate SIMs across multiple countries, a real convenience win for anyone doing a European circuit.
Value on shorter and smaller packages
For short city breaks, standard plans with modest data allowances offer solid value, especially in destinations that fall under €2 per GB. The referral programme hands over €10 in Ycoins for each successful referral, and the first-purchase bonus of €5 adds meaningful credit for new users. The full Yesim eSIM test with detailed pricing and travel verdict goes deeper into value-per-GB across specific destinations. Trustpilot reviews rate the service between 4.3 and 4.6 out of 5 across roughly 2,500 reviews, with a 4.7 on the Google Play Store and 4.6 on the Apple App Store.
Where Yesim falls short : honest weaknesses
The Ycoins system adds unnecessary complexity
The Ycoins virtual currency layer adds a step that competing providers skip entirely. Users must estimate in advance how many Ycoins to purchase, and any excess is non-refundable, locked permanently in the Yesim ecosystem. The automatic top-up feature is active by default, which can trigger an unexpected card charge if not manually disabled before purchase. For first-time eSIM users, this friction is real and occasionally generates frustration visible in the negative minority of reviews.
Support language limitations and setup friction
Customer support operates via live chat, WhatsApp, and email, primarily in English support and Russian support. Other languages receive machine-translated responses, which introduces error risk. The setup sequence also involves more steps than some competitors : account creation, Ycoins purchase, plan selection, and eSIM installation rather than a single checkout flow. French speakers should note that voilà, a French alternative eSIM provider, offers the same coverage with French-language support and transparent pricing without virtual currency, activating in under two minutes.
What travellers are actually saying : user reviews across platforms
Consistently strong ratings
The numbers across platforms tell a coherent story. Trustpilot sits between 4.3 and 4.6 out of 5 from approximately 2,500 reviews. The app rating on Google Play Store reaches 4.7 out of 5 from over 2,500 reviews, and the Apple App Store holds 4.6 from roughly 1,400 reviews. Around 76% of users award five stars. Recurring praise covers quick setup, competitive pricing on smaller packages, working hotspot functionality, and the plan countdown not starting until arrival.
Recurring complaints to be aware of
The negative minority, roughly 10% of feedback, concentrates on specific issues. Unstable connectivity in less common destinations tops the list. Confusion around the Ycoins system and the default automatic top-up setting generates repeated complaints. Excessive push notifications and emails irritate a segment of users. And responses delivered only in English or Russian leave travellers in other markets with machine-translated answers that sometimes miss the point. None of these issues are deal-breakers for mainstream destinations, but they deserve weight for edge cases.
Yesim vs. the alternatives : how it compares
Yesim versus Holafly
| Provider | Best for | Weakness |
|---|---|---|
| Yesim | Multi-country trips, short breaks, Europe | Ycoins friction, limited language support |
| Holafly | Unlimited plans outside Europe | Fewer regional plan options |
| Airalo | Broadest destination selection globally | No built-in VPN or virtual numbers |
| voilà | French speakers, simple direct purchase | Smaller user base |
Holafly undercuts Yesim on unlimited plans outside Europe, making it the smarter pick for travellers who consume heavy data on a long single-country trip. Airalo remains the largest overall selection of eSIM plans globally, a better fit for travellers prioritising destination breadth. For standard fixed-data packages within Europe, Yesim competes strongly on price.
When another option makes more sense
Yesim is a weaker choice for remote workers tethering laptops daily, travellers uploading large video files, anyone needing absolute reliability on a long heavy-data trip, and those visiting destinations with documented problems such as Nepal, Algeria, Mauritius, or the Maldives. For an extended stay in a single country outside high-cost markets, a local SIM still undercuts any travel eSIM on price, sometimes dramatically.
Who should use Yesim and when it makes sense
The traveller Yesim suits best
Yesim fits the traveller who plans a short city break or a multi-country European circuit, books trains and accommodation in advance, and relies on maps throughout the day. Family trips are a particularly strong use case : having data plans active the second the plane lands means someone can immediately call the transfer driver, confirm the apartment code, or check whether the connecting train is on time. That immediate connectivity on arrival genuinely reduces stress.
When to consider a different provider instead
Skip Yesim if you need the cheapest possible rate in a single country, plan serious remote work, or have documentation of poor coverage at your destination. Checking real-time usage tracking and destination-specific Trustpilot reviews before purchasing is non-negotiable for anyone heading to off-the-beaten-track locations. Budget travellers planning longer stays in Southeast Asia, for instance, will often find that a local operator SIM purchased at the airport costs a fraction of any travel eSIM price.
Frequently asked questions about Yesim
Is Yesim reliable and legitimate ?
Yesim is a legitimate eSIM provider that complies with standard eSIM security protocols, using encrypted profiles and QR code-based activation. It accepts secure payment methods and actively responds to reviews on Trustpilot. Reliability is solid across major cities and well-documented tourist areas. In remote or less mainstream locations, it becomes patchy, and destination-specific research before buying is genuinely advisable rather than optional.
Can I get a refund and what are the general eSIM limitations ?
The 30-day refund applies to any eSIM that has not been activated, reachable via the app or email. Beyond Yesim specifics, eSIMs as a category carry inherent limitations worth flagging.
| eSIM advantage | eSIM limitation |
|---|---|
| Activates in minutes, no physical swap | Requires a newer compatible smartphone |
| Frees you from roaming charges | Harder to transfer between devices than a SIM card |
| Supports dual-SIM setups | Typically data-only, no calls or texts |
| Manage everything inside the app | Recovery requires contacting the provider if phone is lost |
Understanding these structural limits helps set the right expectations before any purchase, regardless of which provider you ultimately choose for your next trip.
