Best//
About us
BesteSIM scores and ranks travel eSIM providers against one published rubric across 185 destinations. Every input is a figure the providers themselves publish: plan price per gigabyte, catalogue size, refund window, support languages, and the operator list per destination. This site runs no speed tests, so no throughput number appears on any page of it.
BesteSIM is led by Alex Chen, a travel technology reviewer with seven years of hands-on coverage in mobile connectivity. Alex spent four years before that as a telecom analyst, where the work involved evaluating network infrastructure and roaming agreements for enterprise clients across Southeast Asia and Europe. That background shapes how we read carrier routing tables and pricing structures today.
The work here is desk work, and saying so is the point. Every score starts with the same four sources: the provider's live plan page, its published catalogue, its refund and support policy pages, and the operator list for the destination. Those get read, normalised to a cost per gigabyte, and run through the rubric. Nobody here boards a plane with five handsets, and no figure on this site was produced by a stopwatch or a Speedtest run.
Our contributing reviewers focus on specific regions. One covers sub-Saharan Africa, where carrier partnerships shift frequently. Another covers South America, where data throttling policies vary significantly between providers even within a single country. Every contributor follows the same 5-criteria scoring rubric.
No provider gets to supply the figures it is scored on. Prices come off the public checkout page at the listed retail rate, not off a media kit. When a provider and its own storefront disagree, the storefront wins.
One rubric runs across 5 providers and 185 destinations, with identical weights everywhere. Identical weights are what make a Japan score comparable with a Bolivia score. The five criteria below are all read from published pages, which means a reader can open the same page and check the same number.
Every eSIM earns a score from 0 to 10. The score is a weighted average of five criteria:
For the full method, including how ties are handled and how capped plans are weighted against unlimited ones, read the scoring rubric.
BesteSIM earns a commission when a reader clicks a provider link on this site and buys a plan. Those links are marked, and the arrangement is set out on the disclosure page.
The rubric runs before commission rates are looked at, and a higher rate does not move a score. That is checkable rather than a promise: every input is a published figure, so a reader who thinks a score is wrong can open the provider's own page and say which number is off.
Where a provider falls short, this site names the specific line. Airalo's 14-day refund window is the shortest of the five. Saily answers support in one language. Nomad sells 112 destinations against Airalo's 200. A vague caveat helps nobody deciding what to buy before a flight.
Most eSIM comparison sites pick one provider as the overall best and apply that label everywhere. We do not do that. The best eSIM for Japan is not always the best eSIM for Brazil. Carrier routing agreements vary by country, and a provider with strong Asian network coverage often has weak Latin American partnerships.
The winner is chosen per destination from that destination's own figures. A provider ranked first in 40 countries can rank third in the next one because a competitor holds the better roaming agreement there. Our full destination list shows the per-country winner for all 185 destinations we cover.
We also publish carrier routing transparency. On each country page, we name the local network operator a plan connects to, not just the eSIM brand. This matters because two plans from different providers usually route through the same local carrier, and where they do not, the difference is a different carrier and a different published network tier.
Prices are verified weekly against each provider website. If a price changes by more than 5%, we re-run the pricing sub-score for that destination before the next publish cycle. Our buying guide explains how to read pricing structures so you can evaluate new offers yourself.
Travel eSIM pricing changes more often than most product categories. Providers run promotions, adjust data caps, and change network partnerships without notice. We run three update cycles to keep our data accurate.
We currently rank 5 providers across 185 countries. Those providers connect through more than 200 network operators worldwide. Browse the complete list on our destinations page, or go directly to a provider review:
Each country page shows the top-ranked plan, the local carrier it connects to, the current price per gigabyte, and the date we last verified the data.
We read every message and respond within two business days. If you found an error in a score, a price that no longer matches, or a carrier routing detail that has changed, please tell us. Editorial corrections improve the site for every future reader.
Reach us through our contact page. We do not accept guest posts, sponsored content, or paid placements. Outreach for those will not receive a reply.
See our work
Every page shows a per-country winner, carrier routing details, and a verified price. No guesswork.