Get ready for China.
The forms, payments and phone settings worth sorting out before departure. Each guide links to the official sources behind it.

China arrival card: the official form is free
Open the official NIA service, check who needs the form, prepare the right details, and avoid paying an intermediary for a free government submission.
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Paying in China: set up Alipay or WeChat, keep a fallback
Prepare mobile payments with an overseas card, understand what to check before confirming, and keep cash and a physical card available for arrival.
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Set up your China eSIM before you fly
Check the phone, separate installation from activation, and choose the right data line when you arrive in mainland China.
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Will Google and WhatsApp work on your China eSIM?
Understand provider routing claims, why hotel Wi-Fi behaves differently, and what a travel eSIM does not guarantee.
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Mainland China, Hong Kong and Macao: check every stop
A China label does not settle regional coverage. Match the destination list, validity and app-access terms to your itinerary.
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How much mobile data should you budget for China?
Build a data budget from your own usage, account for hotspot sharing, and compare fixed bundles with daily high-speed limits.
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