步驟 4
電源・通訊・SIM
此資訊更新至 2026/08/11。
※ 通訊環境可能因地區和時期而異。
電壓與插座形狀
電壓差異與插座類型
⚡100V / 50Hz (East) / 60Hz (West)
🔌Type A(扁平2孔)
🔄從日本/美國出發不需要轉接頭
💡3孔接地插頭需2孔轉接頭。100V雖特殊但大多數充電器可用。
SIM卡購買方式
機場與市區的SIM卡購買流程與費用
電信業者: NTT Docomo, au (KDDI), SoftBank, Rakuten Mobile
eSIM與行動Wi-Fi
eSIM支援情況與Wi-Fi分享器選擇
📶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環境
公共Wi-Fi普及狀況與安全性
📡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.
網路限制與VPN
社群媒體與網站的存取限制及VPN需求
🔒none
🚫None — all services freely accessible
🛡️不需要VPN。
💡Japan has completely open internet with excellent speeds everywhere.
實用當地App
交通、翻譯、地圖等便利應用程式
🚗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.
國際電話
撥打國際電話的方式與通話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.