Country plans
Cover one country. If you’re spending the whole trip in Japan, a Japan plan gives you the most data for your money.Regional plans
Cover every country in a region, for example Europe or Asia-Pacific, with one eSIM and one allowance shared across all of them. Cross a border and your phone just finds the next local network; nothing to install or switch.Which should I choose?
Rule of thumb: one country, buy the country plan; two or more, buy the regional plan and check its country list covers every stop, including layovers where you’ll want data.
