Yesim is the travel eSIM we recommend across this site, and we have an affiliate relationship with them — meaning we earn a commission if you buy through our link. This review is written with that in mind: the assessments below are based on published coverage data, pricing and buyer feedback, not on the commission.
Operated by Swiss telecommunications company Genesis Group AG and founded in 2019, Yesim connects across 200+ destinations through partnerships with more than 800 mobile operators. What makes it stand out is less the data itself and more the unusually deep feature set wrapped around it.
Coverage & Flexible Plans
Yesim covers 200+ destinations across three plan tiers — individual countries, regions, and global — and is above average on global reach, with worldwide packages spanning well over 100 countries. You can buy fixed bundles or unlimited options in a large number of individual countries, so it is easy to match a plan to a single-country trip or a sprawling multi-country itinerary without juggling several eSIMs.
Its signature option is "Pay & Fly", a pay-as-you-go model where you are charged only for the data you actually use, with no fixed expiry — well suited to unpredictable or open-ended travel.
Features Beyond Data
This is where Yesim separates itself from most rivals. It includes a built-in VPN on iOS, sells virtual phone numbers useful for receiving SMS verification codes, and lets you share or gift plans across an account — handy for families or teams. A yCoins loyalty and credit system, programmable activation dates, and an app available in nine languages round out a package aimed squarely at frequent, tech-comfortable travellers.
Setup & App
Setup is the usual eSIM flow — buy a plan, install via QR code or the app, and activate. Once active, Yesim connects to the best available partner network automatically. You can get everything ready before you leave home and connect the moment you land, avoiding the airport scramble for Wi-Fi or a local SIM.
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Why We Recommend It
- Wide country coverage and strong global plans suitable for most trips.
- Unusually flexible — fixed, unlimited, and pay-as-you-go "Pay & Fly" options.
- Extras most rivals lack: a built-in VPN, virtual numbers, and plan sharing.
- Straightforward setup that works before departure, with no roaming bills.
Things to Keep in Mind
Yesim is feature-rich rather than bare-bones cheap: for a brief single-country trip, a no-frills provider may have a lower 1GB price, and its unlimited plans throttle after a fair-use threshold, so very heavy streamers may prefer an unlimited specialist. Some users also report slower customer-support response times. As with any eSIM, confirm your phone is eSIM-compatible and unlocked, and check the specific coverage for your destination; data-only plans do not include a local phone number, which is standard across the market.
Frequently Asked Questions
Yesim is a solid option for travelers who want data abroad without swapping physical SIMs or paying roaming fees. As with any eSIM, the right choice depends on your destination, how much data you need, and whether you want unlimited data or pay-per-GB plans. Always check that your phone is eSIM-compatible and unlocked first.
About the author
SK Kutubuddin · Founder & Editor
The founder and editor of Travel and Time. An aeronautical engineer with close to two decades in aviation, I build the site’s flight, distance, and trip-planning tools myself and check every figure before it goes live. I write from Kolkata, India.
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