Stellar eSIM

A Swiss privacy brand bundling encryption into every travel connection

Stellar eSIM is sold by Stellar Security, a Switzerland-based company known for privacy products including VPN, antivirus, and encrypted notes. Rather than selling data alone, Stellar pairs every eSIM with its full VPN suite at no extra cost, positioning data and encryption as a single travel security package that works on the same phone without conflict. The company reports serving over 400,000 travelers globally. Stellar built its entire ecosystem around zero-knowledge architecture, meaning the company holds the encryption keys for most services but cannot access the data itself. The product is data-only; your primary phone number and messaging apps stay connected through your home SIM simultaneously, so WhatsApp, iMessage, banking apps, and other authenticated services continue working without interruption when you switch to Stellar eSIM data.

Plans by destination, with crypto payment and instant activation

The site structures plans around destination choice: pick from individual countries (Turkey, United Kingdom, United States, Germany, Spain, Italy, France, Switzerland, UAE, Thailand, Japan, Albania and others), multi-country regions (Europe, Asia, Africa, Balkan), or Global coverage for unrestricted worldwide data. Each destination page shows live pricing tailored to that location, though the actual data amounts and validity windows are not previewed on the homepage. Validity starts when your eSIM first connects to a network at your destination, not when you buy, a deliberate design that prevents accidental data drain if your phone picks up a signal before you land. You install the eSIM at home with a simple QR scan, and it remains dormant until you arrive and activate it manually. Payment accepts card, PayPal, or cryptocurrency including Bitcoin, Monero, and USDT, acknowledging that travelers often already hold crypto or prefer not to use cards abroad where fraud detection can interfere. The site emphasizes crypto as a path to anonymous purchase: while cards and PayPal require identity details, crypto payment bypasses that friction. Setup follows a streamlined digital flow: complete purchase, receive your eSIM within moments as an email with a QR code, scan it at home in about 5 minutes, and the plan stays idle on your phone until you power on the connection at your destination. Stellar Data, a companion app for iOS and Android, lets you monitor remaining data, top up mid-trip if needed, or upgrade to a larger plan without contacting support, giving you autonomous control over your data spend while traveling.

Coverage across global and regional tiers, underlying carriers not disclosed

The site structures its catalog into destination categories rather than publishing a flat country list: you browse individual countries with their own pricing pages (Turkey, UK, US, Germany, Spain, Italy, France, Switzerland, UAE, Thailand, Japan, Albania), regional multi-country bundles (Europe, Asia, Africa, Balkan), or a Global plan promising worldwide coverage. This destination-first approach means you pick based on where you are going rather than searching a single master list of countries. The underlying cellular networks and carrier partnerships are not named anywhere on the site. Stellar positions itself as a "data reseller" operating under Swiss jurisdiction and built "not just a data reseller" but a privacy-first company, yet it does not disclose which carriers provide the SIM connectivity in each country or region. The site does not publish coverage maps, roaming partnerships outside primary networks, which carriers you will route through, or whether coverage extends beyond major cities and tourist areas. For travelers concerned with carrier stability, such as those working in remote areas, this opacity is a gap; the marketing emphasizes the VPN and privacy layer rather than the underlying network reliability.

Data-only, with included VPN and broad device support

Stellar eSIM is data-only, so phone calls and SMS stay on your primary line while data moves to the travel eSIM. This architecture avoids the friction of carrier switching and means you keep your home number active, verification codes land through your primary SIM, and messaging apps remain authenticated. Device compatibility covers most phones from the last five years: iPhone XS and newer, Google Pixel 3 and newer, and most Samsung Galaxy S20 and newer. You verify support before buying by opening Settings and searching for "eSIM" or "Add mobile plan". If that option appears, your device is ready to accept an eSIM. The site does not publish specific throttle speeds, fair-use data limits, or daily high-speed buckets for any plan. No data cap or overage policy is detailed in the materials. It only notes that "every Stellar eSIM comes with Stellar VPN included for the whole trip," and the VPN is a full app, not a trial or lite version. The company emphasizes that Stellar VPN is built under Swiss privacy law with no activity logs, and works "alongside your Stellar eSIM, on the same phone" without conflict. The marketing material stresses that the VPN handles bank, booking, and payment activity safely on hotel and airport wifi networks. Whether hotspot tethering from a Stellar eSIM is rate-limited, capped, or subject to a separate allowance is not addressed on the captured pages. The company provides a support team ("Our support team answers real questions from real people") but does not publish support hours, response time SLAs, or a phone contact number.

What Stellar does not settle and who this suits

The site does not publish specific data allowances for any plan, it refers to "live pricing on every destination page" but does not show the actual GB buckets, validity periods, or speed tiers. It also does not explain whether data pools are shared across multiple devices, what happens after you exhaust a high-speed bucket (if one exists), whether you can truly top up at any time or only before expiration, or whether prepaid data rolls over into the next month if you do not use it. For travelers planning multi-country routes, it is unclear whether switching between Stellar's regional plans mid-trip carries penalties or if you must buy a new plan each time you cross a border. These unanswered questions matter most for extended trips, families sharing a device, or digital nomads who need predictable data budgets. Stellar suits privacy-conscious travelers who want encryption layered into every connection, who accept Swiss jurisdiction over their metadata, and who prioritize the bundled VPN over detailed plan specs. It is less suitable for travelers who need upfront, granular pricing comparisons, who want to know exactly how much data they are purchasing, or who value mainstream carrier brands and published roaming agreements.