China power: 220V, 50Hz; plugs are the two-prong flat (Type A, like the US/Japan) and three-prong flat (Type I, like Australia).
Compatibility: most devices (Europe, Hong Kong, UK) just need a plug adapter; US/Japanese two-prong plugs fit directly.
Voltage: 110V-only old appliances (some US gear) need a transformer; modern chargers accept 100-240V input and plug straight in.
Shared power banks: Street Charge, Monster and Meituan are everywhere in malls and restaurants - scan to borrow, pay by the hour (3-6 yuan), deposit-free with Alipay or WeChat credit.
SIM and data: China Mobile/Unicom/Telecom stores issue prepaid SIMs with a passport; buy tourist data cards at airports; eSIM-capable phones can use overseas eSIM services (check compatibility).
Wi-Fi: hotels, malls and cafés are mostly free, some needing a phone-number SMS login (front desk helps); airports offer free network.
