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
⚡220V / 50Hz
🔌Type A / C / F(混合型（多规格）)
🔄建议携带万用转接头
💡Most modern outlets accept both US and European plugs.
SIM卡购买方式
机场与市区的SIM卡购买流程与费用
运营商: Viettel, Mobifone, Vinaphone
eSIM与移动Wi-Fi
eSIM支持情况与Wi-Fi租赁选择
📶Available
🏢Airalo, Holafly, Ubigi, Viettel eSIM
💰$5-20 for 1-10GB / 7-30 days
💡Viettel supports eSIM with excellent nationwide coverage.
Wi-Fi环境
公共Wi-Fi普及状况与安全性
📡good
🏨Free and fast in most hotels and hostels
☕Free in cafes, restaurants, and many shops
💡Vietnam has surprisingly fast WiFi; even budget hostels offer free access.
网络限制与VPN
社交媒体与网站的访问限制及VPN需求
🔒low
🚫Facebook and social media occasionally throttled but generally accessible
🛡️不需要VPN。
💡Social media works but may be slow at times; VPN helpful for consistent speed.
实用当地App
交通、翻译、地图等便利应用
🚗Grab (dominant), Be (Vietnamese alternative)
🗺️Google Maps, Grab in-app
💬Zalo (local favorite), WhatsApp, Facebook Messenger
💡Grab is essential for rides and food; Zalo is how locals communicate.
国际电话
拨打国际电话的方式与通话App
📞+84 (Vietnam)
🆘113 (Police), 115 (Ambulance), 114 (Fire)
📲Dial 00 + country code + number for international calls
💡Drop the leading 0 from local numbers when dialing from abroad.