Yesim

Yesim: Swiss eSIM provider with flexible per-gigabyte pricing

Yesim is a Swiss eSIM seller that operates under both yesim.app and yesim.tech (the same company and service), serving travelers with flexible, day-based and per-gigabyte pricing across 170+ destinations. The platform also offers virtual phone numbers for business use, corporate eSIM management tools, and a partner API for resellers, making it suitable for both individual travelers purchasing data and businesses provisioning communication infrastructure. Yesim's positioning emphasizes the global reach and pricing transparency, appealing to nomads and frequent travelers who benefit from persistent balance that carries across trips.

Pricing and how data is structured

Yesim charges on a pay-as-you-go model with prices starting from $1.10 per gigabyte for the base rate, and daily passes for specific countries at varying price tiers. The site lists day-pass pricing for popular destinations, representing typical value: Thailand at $1.68 per day, United Arab Emirates at $3.52 per day, Turkey at $2.28 per day, Egypt at $2.76 per day, China at $2.52 per day, United States at $1.80 per day, Germany at $2.28 per day, Vietnam at $2.28 per day, Switzerland at $2.28 per day, United Kingdom at $2.28 per day, Italy at $2.28 per day and Mexico at $3.16 per day. The sub-$2 per-day rate for Thailand and the US positions Yesim competitively for budget-conscious travelers visiting high-traffic destinations. Smaller island nations command much higher rates (examples: Anguilla and Antigua and Barbuda from $14.40 per day, Aruba from $15.60 per day), reflecting limited competition and smaller user bases on those islands. The site also lists countries priced per gigabyte rather than per day (Angola at $113.04 per GB, Bhutan at $169.68 per GB), serving niche travelers or business users in markets where daily passes are not practical. Unused balance carries over to the traveler's next trip, a feature Yesim emphasizes with the tagline "keep unused balance for the next trip," making it valuable for travelers with unpredictable data use or those returning to the same destination repeatedly. The site does not specify a validity window or absolute expiration date for the balance, if one exists, leaving the question of whether money-in-account has a time limit unclear.

Coverage breadth and carrier information

Yesim covers 170+ countries, which the site breaks out into a country-by-country pricing list rather than a high-level marketing claim alone. The captured pages show individual entries for numerous destinations, indicating each has a dedicated commercial offer rather than being grouped into regions or bundles. This granularity is useful for precise planning and cost estimation but also means travelers must look up each destination individually instead of selecting a region once and paying a flat regional rate. Countries are listed alphabetically from Afghanistan through Zimbabwe, with some territories noted as not yet covered (Bailiwick of Guernsey, Burkina Faso, Haiti, Iran, Kosovo, Lesotho, Mali, Mayotte, Myanmar, Swaziland, Yemen). The site does not name the underlying carriers or networks that power the connections in any country, so travelers cannot verify coverage before purchase or understand which local operator will route their data and what coverage gaps might exist in rural areas. This lack of transparency is common among eSIM aggregators but limits travelers' ability to assess reliability independently.

Business features and virtual numbers

Beyond data eSIMs, Yesim offers virtual phone numbers for business, allowing companies to assign local numbers in various countries without a physical presence there, a service that appeals to remote teams and digital nomads who need a local presence for receiving calls. The platform advertises "OneBalance" for corporate eSIM management and a "Partner API" for eSIM resellers looking to integrate Yesim into their own product offerings. A loyalty program and referral program are mentioned on the homepage, with referral bonuses up to 75 euros (or EUR equivalent), though the captured pages do not detail the loyalty rewards structure or how to accumulate points if they exist.

Practical support and device compatibility

The site advertises 24/7 support, though the support hours for each region or the specific channels (chat, email, phone) are not detailed in the captured sections. The Help Center is available online, and a data calculator tool helps travelers estimate their data needs before purchase, a practical feature for those unfamiliar with their consumption patterns. Device compatibility information is mentioned in the navigation (a "Compatible devices" link) but the specific supported devices are not shown in the captured snippet. The site supports multiple currencies and languages, with currency and language pickers visible in the header, facilitating access for non-English speakers and international customers. A 4.7 rating out of 5 (60,000+ customer ratings) is displayed prominently, and the site claims 4 million users, suggesting a substantial and growing user base. The site does not specify whether payment is one-time or subscription-based, or what payment methods are accepted beyond the currency picker.

Critical gaps and unanswered questions

Yesim does not publish throttle speeds or a fair-use policy for unlimited data, if unlimited data plans are available at all. The site uses "pay as you go" language but does not spell out whether rates are strictly per-gigabyte, per-day, or a hybrid depending on the country. The distinction matters: a $1.68-per-day pass for Thailand and a $1.10-per-gigabyte rate produce very different costs for a 10 GB trip. It is unclear whether the $1.10-per-GB base rate applies uniformly, or only in certain countries; the pricing list shows only day rates for most countries, and per-GB rates for a handful of outliers (Angola, Bhutan, etc.), with no explanation of which pricing model applies where. The site does not clarify whether data is voice and SMS capable or data-only, or whether voice and SMS are available as upsells or not offered at all. No refund policy is mentioned in the captured pages.

Yesim is most valuable for travelers who hop between many countries in one trip and want a single eSIM to keep reusing, since the balance persists across trips and does not expire between vacations. The granular country-by-country pricing is useful for planning small multi-country journeys without overpaying for regional bundles. The referral bonus and rewards programs appeal to loyal or frequent-traveling customers. Yesim is less suitable for travelers who want a simple "unlimited" bucket with a clear throttle speed and no per-country hassle, or who need carrier information to verify coverage before arriving, or who require voice calling and SMS as part of the core offering rather than determining whether they are available at all, or who prefer a single flat rate over complex country-by-country pricing.