1. Card binding: the most common failure point
Your mobile wallet—Alipay or WeChat Pay—must have a valid international card linked. Many tourists add their card but never complete the one-time verification step required by the card issuer.
How to verify: Open the payment app, go to the card management section, and check that the card shows as "verified" or "active." If it still says "pending" or "awaiting verification," complete the small authorization charge step. This typically involves a $1–2 temporary hold that disappears within 48 hours.
What can go wrong: Some Chinese bank-issued cards block international cards by default. If you're using a co-branded card (e.g., a UnionPay card issued outside China), it may require a separate activation call. Also, note that some cards—like prepaid cards or virtual cards from services like Revolut—work intermittently. It's safest to bring a backup physical credit card.
2. Language settings: the silent blocker
Your app's language setting affects how the payment interface behaves. If the app is set to English but the local merchant terminal expects Chinese prompts, the payment may fail silently.
How to verify: Inside the app, confirm the language setting is "English" or whatever your preferred language is. Don't assume auto-detect works—set it manually. Also, check that the app's region is set to "China" (not your home region) because some features, like in-app top-up, are region-locked.
What can go wrong: You might be able to browse and chat in English, but the payment page could default to Chinese characters, making it impossible to complete a transaction if you can't read the prompts. In rare cases, the app will freeze when switching between languages mid-payment.
3. Payment password: the forgotten step
Both Alipay and WeChat Pay require a 6-digit payment password for transactions over a certain amount (usually ¥200–500). Many tourists set this up once and forget it—until they're standing in line and the app asks for it.
How to verify: Go to the security settings of your payment app and confirm there's a payment password set. Try using it in a mock transaction (you can cancel before confirming). If you've forgotten it, reset it while you still have access to your home phone number and email.
What can go wrong: If you reset your payment password after arriving in China, you may need SMS verification to your home number, which may not work without roaming. Even with roaming, delays of 5–10 minutes are common. You'll be stuck holding up the queue.
4. Fallback methods: what to do when everything fails
Even with perfect preparation, things can go wrong: your card issuer blocks the transaction for fraud, the app crashes, or the merchant's wifi is down. Have a backup plan. Practical fallbacks: