步骤 4
电源・通讯・SIM
此信息更新至 2026/08/11。
※ 通讯环境可能因地区和时期而异。
电压与插座类型
电压差异与插座形状
⚡100V / 50Hz (East) / 60Hz (West)
🔌Type A(扁平2孔)
🔄从日本/美国出发不需要转接头
💡3孔接地插头需2孔转接头。100V虽特殊但大多数充电器可用。
SIM卡购买方式
机场与市区的SIM卡购买流程与费用
运营商: NTT Docomo, au (KDDI), SoftBank, Rakuten Mobile
eSIM与移动Wi-Fi
eSIM支持情况与Wi-Fi租赁选择
📶Widely available
🏢Airalo, Holafly, Ubigi, IIJmio eSIM, au eSIM, Rakuten eSIM
💰$5-30 for 1-10GB / 7-30 days
💡IIJmio data eSIM activates instantly online; Ubigi also popular among tourists.
Wi-Fi环境
公共Wi-Fi普及状况与安全性
📡excellent
🏨Fast and free in all hotels and ryokans
☕Free in convenience stores, stations, cafes, and via Japan Wi-Fi auto-connect app
💡Download Japan Wi-Fi auto-connect app for seamless access at 200,000+ spots.
网络限制与VPN
社交媒体与网站的访问限制及VPN需求
🔒none
🚫None — all services freely accessible
🛡️不需要VPN。
💡Japan has completely open internet with excellent speeds everywhere.
实用当地App
交通、翻译、地图等便利应用
🚗Suica/PASMO app, Japan Taxi, Uber (limited)
🗺️Google Maps (excellent for transit), Navitime
💬LINE (essential), WhatsApp
💡LINE is how Japanese communicate; Google Maps has real-time transit info.
国际电话
拨打国际电话的方式与通话App
📞+81 (Japan)
🆘110 (Police), 119 (Fire/Ambulance)
📲Dial 010 + country code + number for international calls
💡Emergency calls work from any phone; English support available on 110.