How we research route guides

The route-first method

Every itinerary starts from a route, not a product. We write the trip as a list of countries in travel order, add pass-through countries and day trips, count nights per country, and mark which countries sit inside or outside groupings such as the EU. Only then do we ask which kind of plan fits: one country plan, one regional plan, or one plan per country or region.

Where our facts come from

• Device steps (adding an eSIM, choosing the data line, data roaming, network selection) come from Apple, Google and Samsung help pages, linked in each article.
• Roaming rules for EU and EEA travellers come from the European Commission and Your Europe pages.
• TripoSIM facts (data-only plans, when validity starts, one QR code per device, which regional pages exist) come from TripoSIM's public pages, checked on the date shown in each article.
• Country and network data on our country pages comes from TripoSIM's published research dataset, which is a historical catalogue summary, not live stock.
• Geography (which country a city is in, where a road crosses a border, which ferries link which ports) comes from general reference knowledge; we tell readers to check current timetables before relying on a sailing or route.

What we do not claim

We do not publish live prices, speeds, coverage maps or network rankings. We do not claim to have tested plans on the ground unless an article says so. Our Route Studio applies the same rules as our articles to the stops you type; it does not check live plans.

How we keep pages current

We review itineraries when sellers change their public terms, when official roaming rules change, or when a reader reports a problem. Changes are reflected in the page's modified date.