What “Unlimited Data” Really Means on a Japan eSIM — Fair Usage Policies Explained

“Unlimited data” sounds like the answer to every traveler’s needs. You can stream on the Shinkansen from Tokyo to Osaka, upload videos from Arashiyama, or video call home from Kyoto. But there is an important detail behind the headline: the fair usage policy. If you have ever watched your connection suddenly slow down during a