esimNB is a prepaid international eSIM store and companion iOS app that sells per-destination mobile data plans, delivered digitally so a phone gets online on arrival without a physical SIM swap.
What is esimNB?
esimNB is an international eSIM data service for travellers, sold through esimnb.com and an app on the App Store (linked from the site's Download button). You choose a destination or region — the site lists country plans for the United States, Canada, Japan, South Korea, mainland China, Thailand, Vietnam, Turkey, India, Brazil, Australia, the UK, France, Germany, Spain, Italy, Switzerland, Ireland, Greece, Hong Kong, Malaysia, Indonesia, the Philippines and the UAE, plus regional bundles for Europe, Asia (12 areas) and North America (3) — buy a data package, and receive an eSIM profile that installs on a carrier-unlocked, eSIM-compatible phone. The output is mobile data on local partner networks; there is no plastic SIM, no contract and no roaming charge, and additional data is added through top-ups from the app or the website.
What makes esimNB stand out?
- Automatic best-network selection — the eSIM moves to whichever partner operator in the area has the strongest connection, including 5G where available; esimNB states it works with 600+ operators worldwide, with logos for AT&T, T-Mobile, Verizon, Vodafone, Orange, Optus, China Unicom and SoftBank.
- Coverage of 190+ countries — single-country plans plus regional bundles such as Asia (12 areas) and North America (3), browsable at esimnb.com/all-destinations.
- Instant digital delivery — the profile is issued digitally, so there is no SIM swap, no shipping and no store visit.
- No eKYC — esimNB states that no identity verification is required to buy its lowest-priced data plans.
- No contracts and no roaming fees — plans are prepaid per package and can be topped up whenever more data is needed, so travellers are not locked to a carrier.
- Refund guarantee — the site advertises a refund guarantee on purchases.
- Usage checks online — you can look up remaining eSIM usage on the website rather than only inside the app.
- Apple Pay and Google Pay — both payment logos appear at checkout, and the site notes data prices below typical competitor rates.
Who should use esimNB?
- Short-trip and multi-country travellers: buy a regional bundle (Europe, Asia 12-area, North America 3) instead of hunting for a local SIM in each stop.
- Travellers who keep their home number: the comparison table lists keeping your home number active alongside the eSIM data line, useful for receiving bank or two-factor SMS.
- Budget-focused tourists: the site's pricing angle is wholesale data rates with a refund guarantee and no roaming surcharges.
- Non-technical users: customer reviews on the page specifically mention that setup worked for a self-described technical novice, and onboarding is a three-step flow.
What can you do with esimNB?
- Stay online on a trip: pick a destination plan, activate it, and use local 4G and 5G data instead of hotel Wi-Fi or carrier roaming.
- Make video calls and post on the move: the site highlights delay-free video calls, fast story uploads and uploading video content from abroad.
- Navigate with maps and ride-hailing: the page shows the UBER app as an example use case for on-the-ground connectivity.
- Top up mid-trip: add more data from the app or website when a package runs low, without buying a new SIM.
How does esimNB work?
- Choose your destination and package.
- Activate your eSIM data plan.
- Manage and top up your package.
The site flags one prerequisite up front: the phone must be carrier-unlocked and eSIM-compatible, which you can verify on esimNB's compatible-devices resource page.
Pricing
esimNB sells prepaid data packages rather than a subscription: each destination or region has its own package, prices are described as wholesale rates set below typical competitor prices, and there are no contracts or roaming fees. Exact amounts are shown per destination on the country pages, and top-ups are paid separately when a package needs more data.
Alternatives
Airalo, Holafly, Nomad and Ubigi also sell prepaid travel eSIM data plans.
FAQ
Is esimNB free?
No. esimNB is a paid service: you buy a prepaid data package for a destination or region and pay again only when you top up. The site markets its rates as wholesale and cheaper than competitor eSIM stores, with a refund guarantee.
Does my phone need to be unlocked to use esimNB?
Yes. esimNB states prominently that your phone must be carrier-unlocked and eSIM-compatible before you buy. The site links to its own compatible-devices resource page so you can check your model before purchasing a plan.
How many countries does esimNB cover?
The site says plans are available across 190+ countries and lists 600+ partner mobile operators, covering destinations such as the United States, Japan, Thailand, Turkey, France and Brazil, plus multi-country bundles for Europe, Asia (12 areas) and North America (3).
Do I need to submit ID or do eKYC with esimNB?
No. esimNB states that no eKYC is required to buy its data plans, and it presents that as part of keeping the purchase private. Identity documents are not requested at checkout for the plans advertised on the site.
Can I keep my regular phone number while using esimNB?
The site's physical-SIM comparison table lists "keep your home number active" as an esimNB advantage, meaning the eSIM data line runs alongside your existing line so you can still receive calls and SMS on your home number.
