QRコードで即時開通。日本で常に接続。
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Japan has excellent 4G/5G coverage nationwide, powered by major carriers NTT Docomo, au (KDDI), and SoftBank. Our eSIM plans connect through these top-tier networks, delivering reliable high-speed data across Tokyo, Osaka, Kyoto, and even rural areas. According to Ookla Speedtest Global Index (2025), average download speeds in Japan reach 50-100 Mbps on 4G and up to 500 Mbps on 5G in major cities.
Full 5G coverage across 23 wards, Shibuya, Shinjuku, Akihabara. Tokyo Metro has 4G in most stations and tunnels.
Excellent 4G/5G in Namba, Umeda, Dotonbori, and Universal Studios Japan. Shinkansen to Kyoto has continuous coverage.
Strong coverage at major temples (Kinkaku-ji, Fushimi Inari) and downtown Gion. Bamboo groves have adequate signal.
eSIMとは何か、仕組み、旅行で物理SIMカードより優れている理由、5分以内にeSIMを有効化する方法を解説。
旅行用eSIM、物理SIMカード、国際ローミングを比較。実際のコスト比較、メリット・デメリット、最適な選択肢を紹介。
日本旅行に最適なeSIMを見つけよう。東京、大阪、京都のデータプラン、料金、カバレッジを比較。$1.99から即時アクティベーション。
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