MyMySIM Guide Editors (2026)
We are a small editorial team. We compare connectivity formats so travelers do not pay the wrong price.
What we do.
MySIM Guide is an independent format comparison tool. We measure eSIM, physical SIM card, pocket WiFi, and carrier roaming across 185+ countries on four axes: cost, setup time, speed, and convenience.
We do not sell SIM cards. We do not work for any carrier. Our job is to tell you which format wins for your specific trip.
Most travelers make this decision under pressure — standing at an airport kiosk after a long flight, or searching on the way to the gate. We built MySIM Guide to give you a clear answer before you need it, based on verified data for your destination.
One format wins most trips. Two formats win edge cases. We label both clearly.
The team.
MySIM Guide Editors are based in Tokyo, Berlin, and Bangkok. Each editor covers the airports, carriers, and prepaid SIM markets in their region.
Tokyo covers Asia-Pacific: Japan, South Korea, Thailand, Vietnam, Singapore, and 40+ neighboring countries. The Tokyo desk conducts hands-on airport SIM research and tests eSIM activation times on arrival at Narita, Haneda, Incheon, Suvarnabhumi, and Changi.
Berlin covers Europe and Africa: Germany, France, UK, Italy, Spain, and 60+ additional markets. The Berlin desk tracks EU roaming regulation changes and monitors how UK carriers have adjusted their pricing since Brexit-era roaming rules changed.
Bangkok covers Southeast Asia, South Asia, and cross-regional multi-SIM testing. The Bangkok desk handles multi-destination trip research, which requires comparing single-country eSIMs against regional plans.
The three desks share a single data standard and submit results to the same central database. Country pages on MySIM Guide reflect the combined findings of all three regional teams, not the output of a single researcher.
Format expertise.
We cover all four connectivity formats because no single format wins everywhere. eSIM wins on convenience and price in most developed markets. Physical SIM cards win in countries where eSIM carrier support is thin and airport kiosks sell tourist SIMs at low cost. Pocket WiFi wins for group travel where multiple devices need data simultaneously. Carrier roaming wins for trips of one or two days where setup time matters more than cost.
Our editors have direct experience with all four formats across 185+ countries. The Tokyo desk focuses on eSIM and airport SIM research in Asia-Pacific, where physical SIM market conditions vary dramatically between countries. The Berlin desk specializes in carrier roaming cost tracking across US and UK carriers. The Bangkok desk handles multi-destination and multi-format comparisons.
We do not favor eSIM in our recommendations even though our affiliate revenue comes from eSIM purchases. The cheapest format for each destination is the format we recommend. When physical SIM or pocket WiFi is cheaper, we say so clearly and do not link to an eSIM provider as the primary recommendation.
How we test.
We benchmark each connectivity format using standardized tests across 185+ countries. Data is pulled from provider APIs and airport counter visits every Friday.
Each format is evaluated on a 7-day, 5 GB baseline. We record the cheapest available plan per format in that country on that week. We also record setup time, median download speed, device count, and return requirements.
Speed figures come from Ookla Speedtest public datasets and provider spec sheets. We cross-reference both. When they diverge, we use the lower number.
Full methodology: mysimguide.com/methodology.
When we update.
Pricing data. Every Friday our editors pull current rates from provider checkout pages and airport-counter price boards. eSIM prices change frequently — weekly checks catch most movements within days of the change.
Speed and coverage data. Network performance benchmarks refreshed each quarter from Ookla datasets and on-device tests. Carrier roaming rates are re-verified at the same time from official rate-card pages.
Affiliate disclosure.
We accept affiliate revenue on outbound clicks after the ranking is set. The ranking is never adjusted to favor a paying partner.
We refuse sponsored placement. No provider can pay to appear in a top-row position. The cheapest verified plan wins every week.
All affiliate links are labeled rel="sponsored" in our HTML. You can inspect any outbound link on this site.
Contact.
Data corrections, pricing errors, and press inquiries: editors@mysimguide.com
We review all correction reports. If the data is wrong, it is fixed in the next Friday polling cycle. If the discrepancy is in a field updated on a different schedule, we prioritise it for the next relevant update run. Most corrections reach the live site within three to five days of submission.