Docomo vs SoftBank vs KDDI: Which Japanese Network Should You Choose?

Japan has three major mobile networks — NTT Docomo, SoftBank, and KDDI/au — and choosing between them is one of the more consequential decisions a Japan traveler can make before departure. It is also one of the most underexplored, because most eSIM providers present their products as interchangeable and most travelers assume Japan’s coverage is