Our Methodology

How we research, test, and update every guide on Travel SIM Finder. By Seth · Updated October 2026

Every recommendation on this site is the result of hands-on testing or rigorous primary-source research. This page documents exactly how we work: what we test, what we research, how we source pricing, how often pages are refreshed, and how editorial decisions are made independently of affiliate revenue. If a guide on this site doesn't follow this process, it's a bug. Please tell us.

How We Test eSIMs and SIM Cards

For every provider featured on this site, we buy a real plan with our own money. No review units, no provider freebies, no affiliate-supplied access. We install the plan on a real device (a current iPhone or Android handset), activate it in the destination it's intended for, and use it as a primary connection for the duration of the test.

During testing we verify:

• Activation experience: how long it takes from purchase to working data, and whether the provider's app and instructions match reality.
• Network attachment: which local carrier the eSIM actually connects to (this is often different from what the provider advertises).
• Real-world coverage: central city, transit/metro, residential neighborhoods, and outlying areas where networks typically degrade.
• Speed and stability: practical performance for navigation, messaging, photo uploads, and video calls. We don't publish speed-test screenshots because they vary minute-to-minute and mislead more than they inform.
• Hotspot behavior: whether the plan actually allows tethering, and at what speed.
• Customer support: response time and quality when something goes wrong, tested by deliberately triggering an issue (failed activation, exhausted data, etc.).

Tested vs Researched Destinations

We're transparent about what we have and haven't visited firsthand. Country guides are written from one of two positions:

• Firsthand-tested: Seth has traveled to the destination, used the recommended providers there personally, and verified coverage and pricing on the ground. These guides include specific observations from real trips.
• Researched: Where we have not yet visited a destination personally, guides are built from primary sources only: official carrier websites, the destination's national telecoms regulator, traveler reports we can verify, and provider documentation. Researched guides never claim firsthand experience.

We are working to convert every researched guide into a firsthand-tested one over time. If you've traveled somewhere we cover and our guide gets something wrong, please email us. We update fast on real corrections.

How We Check Who Sells Where

Before a country guide is written, we check whether each provider actually sells a plan there. The starting point is each provider's own sitemap, which lists every destination it has a product page for. A sitemap is not proof on its own: some providers keep pages live for countries they no longer sell, and a few file countries under misspelled addresses. So every product page is also opened directly, compared against a made-up destination to confirm the site really distinguishes the two, and read for "currently unavailable" notices.

Where no provider we track sells a plan, the guide says so plainly. Those pages carry no buy buttons and no product markup, and they explain how to get connected anyway, usually with a local SIM bought on arrival.

How We Source Pricing

All prices on the site are checked against the provider's official website at the time of writing and at every refresh cycle (see below). We never pull prices from third-party aggregators, comparison sites, or scraped databases.

Prices are verified country by country. Travel eSIM pricing is not one global price list: the same provider can charge four or five times as much per gigabyte in a small or remote market as it does in Western Europe, and the cheapest provider in one country is often the most expensive in the next. Every country guide shows the prices that provider charges for that country, in US dollars, fetched in US dollars rather than converted from whatever currency the site shows a visitor by default.

Local SIM prices are quoted in the local currency from the carrier's own published bundles, with an approximate dollar figure alongside. When a price is converted, the conversion uses the exchange rate at the time of the refresh and is rounded to a sensible number, never inflated to make a recommendation look better. Where a local SIM is cheaper than every travel eSIM, which is true in much of Africa, Latin America and the Caribbean, the guide says so, and makes the case for an eSIM only on timing and convenience.

Network Names

The network each eSIM uses is taken from the provider's own product page. When a provider names no network, or names different networks in different places on the same page, the guide reports that rather than picking one. Telecom markets change quickly, so carrier names, mergers and rebrands are checked against current regulator and carrier sources at every build, not copied from older guides.

How Often We Refresh Each Page

Stale prices are the single biggest reason affiliate sites become useless. Every page on Travel SIM Finder has a defined refresh cadence based on how fast its content goes out of date. The visible "Updated" date on each page reflects the most recent refresh.

When a refresh happens, the visible "Updated" date and the page's dateModified in structured data are updated together. We never bump dates without making real changes. That's exactly the kind of fake-freshness signal that gets affiliate sites demoted, and we don't do it.

How Recommendations Are Decided

"Best for" recommendations are based on the actual needs of the traveler segment we're writing for, not on which provider pays the highest commission. For each country and use case we ask:

• What does this traveler actually need (data volume, trip length, hotspot, calls)?
• Which provider's network performs best in this destination based on testing?
• Which plan offers the best value at that data tier?
• Are there hidden gotchas (throttling, validity windows, activation requirements)?

If the answer is "no provider on the site is the best choice for this use case," we say so and recommend the right provider even if we don't have an affiliate relationship with them. This has happened, and it will keep happening, because being honest is worth more long-term than a $3 commission.

Editorial Independence

No provider, affiliate program, or third party has any input into our reviews, ratings, recommendations, or rankings. We have not accepted free products, sponsored trips, or paid placements. No provider has been given the ability to preview or approve content before publication. When a provider is bad value or wrong for a particular destination, the guide will say so, including providers we earn commission from.

We disclose every affiliate relationship at the top of pages where it applies, and again in the full affiliate disclosure. Affiliate links use rel="sponsored" per Google's guidelines.

Corrections Policy

We make mistakes. When we do, we want to fix them fast. If you spot an inaccuracy, whether a price that's changed, a kiosk that's closed, a plan that's been discontinued, or a coverage claim that doesn't match your real experience, email hello@travelsimfinder.com. Corrections are reviewed personally by Seth and applied within a few days, with the page's "Updated" date and structured data adjusted accordingly. We don't silently rewrite history; substantive corrections are noted at the bottom of the affected page.

What We Don't Do

• No unverified claims. Prices, network names, coverage and local rules such as SIM registration are checked against a live primary source before a page is published.
• No scraped review aggregation. We don't pull star ratings from other comparison sites and reframe them.
• No provider-supplied "review" content. We don't republish marketing copy as editorial.
• No fabricated firsthand claims. If we haven't been to a place, we say so.
• No fake-fresh dates. The "Updated" date reflects a real refresh, not a CMS bump.

Questions About This Process

Have a question about how we tested something specific, or want to suggest an improvement to this methodology? Email hello@travelsimfinder.com.