Cairnroam is an independent publication about one deceptively simple question: how do you get online the moment you land in another country — reliably, and without overpaying?
What we do
We test and explain travel connectivity: eSIMs, international roaming and local prepaid SIMs. Instead of theory, we buy the plans, use them on real trips, and write down what actually happened — activation, speed, coverage and the true cost.
How we work
- Hands-on first. Every edition is written by someone who travels and tests in the field.
- Primary sources. For rules and prices we cite carriers, eSIM providers and regulators directly.
- Plain numbers. Prices in local currency, converted for comparison, and dated because they change.
You can read more in our Editorial Policy.
Our editions and authors
Cairnroam is written for travelers in four languages, each by a dedicated author:
- Mara Whitlock — U.S. edition
- sasapy — Japanese edition
- ferno — German edition
- pengfei (鹏飞) — Simplified-Chinese edition
How we stay independent
We earn from display advertising and affiliate commissions, but our recommendations are based on testing — not on who pays most. See our Affiliate Disclosure and Privacy Policy for the details.
Say hello
Questions, corrections or ideas? Visit our Contact page — we’d love to hear from you.