Airalo Discover China eSIM
Data the moment you land, with Hong Kong-routed plans from approx $4.50-20.
Why it matters
The first arrival hour assumes working data: CDAC receipt checks, maps, translation, hotel messages, Didi, and payment setup all fail without it. Home-carrier roaming is commonly approx $5-15 per day and can still be slow on mainland networks.
What we recommend
Use Airalo Discover China eSIM. It routes through Hong Kong partners, which helps common overseas apps keep working on mobile data before you have hotel Wi-Fi or a backup access layer. Install before takeoff and confirm the eSIM is visible on your phone.
Alternatives
Holafly is simpler if you want unlimited data but costs more. Saily is a newer option. Airport physical SIMs can be cheaper, but the counter process can add 20-40 minutes when you are already tired.