China offers advanced mobile infrastructure in urban centers. Travel eSIM lets you load a data profile before arrival, then enable the line after you land—reducing kiosk friction at the airport.
Cities and transit
Major cities deliver strong LTE/5G where deployed. High-speed rail routes may show brief sector switches—normal mobile behaviour rather than a faulty SIM.
Data planning
Budget for maps, messaging, and any work apps you need. If you rely on corporate VPN, follow your IT policies while abroad.