Rakuten Mobile FAQ 2026: 50+ Questions Answered

Comprehensive FAQ about Rakuten Mobile SAIKYO Plan for foreigners and international students in Japan. Get detailed answers on eligibility requirements, required documents (residence card, bank account), English customer support, eSIM vs physical SIM activation, billing methods, cancellation policies, coverage verification, MNP (mobile number portability) transfers, and comparing with Docomo, au, and SoftBank. Updated January 2026.