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

“Unlimited data” sounds like the answer to every traveler’s prayer. Stream your way through a Shinkansen journey from Tokyo to Osaka, upload reels from Arashiyama Bamboo Grove, video call home from a Kyoto machiya — no caps, no worries. But if you’ve ever hit an invisible wall mid-trip and found your connection suddenly crawling, you’ve