eSIMingo is an independent editorial project that explains eSIM technology and country-by-country mobile data options for travellers. We publish in eight languages and we do not sell connectivity ourselves. Every technical claim on this site is meant to be traceable to a published primary source — a GSMA specification, a device maker’s support documentation, or a telecom regulator.
Who writes this site
Pages are produced by the eSIMingo editorial team. We are an aggregator: our work is to read the public primary sources on eSIM — standards, vendor documentation, and regulation — and reorganise them into something a first-time traveller can act on. We do not claim insider access to carriers, and we do not republish carrier marketing copy as fact.
How we source
- Standards before summaries. eSIM behaviour is defined by the GSMA’s Remote SIM Provisioning specifications — the architecture specification SGP.21 v1.0 was published on 23 December 2015, and consumer provisioning is defined by SGP.22. See the GSMA specification status page.
- Device support comes from the manufacturer. Which handsets support eSIM, how many profiles can be stored, and which markets are excluded are taken from the vendors themselves, such as Apple Support and Google Pixel Help.
- Roaming rules come from regulators. For example, the scope of “Roam like at home” is taken from the European Commission, not from resellers.
- We link what we used. Where a page makes a factual claim, the source is listed at the foot of that page so you can check it yourself.
What we cannot promise
Device support lists, coverage, and prices change without notice, and local rules for tourist SIM registration change faster still. Treat our country pages as a starting point and re-check the primary source shortly before you travel. If a page and a carrier disagree, the carrier is right about its own product.
Corrections
If something here is wrong or out of date, tell us and we will fix it. Corrections that change the meaning of a page are reflected in that page’s “last updated” line. You can reach the editorial team through our contact form.
Languages
eSIMingo publishes in English, Japanese, German, French, Spanish, Portuguese, Russian and Korean. Each language edition is edited in that language rather than machine-translated from a single master, and the sources cited are the localised versions where the publisher offers one.
Also see our privacy policy and terms of use.