Rakuten SAIKYO Plan vs Docomo ahamo, au povo & SoftBank LINEMO

Compare Rakuten SAIKYO Plan (¥1,078-¥3,278/month) against Docomo ahamo, au povo, and SoftBank LINEMO. Side-by-side comparison of pricing, data limits, speeds, and features for foreigners and international students in Japan. Updated January 2026.