The first thing most visitors notice in China is the square. A black-and-white code taped to a noodle counter, propped on a taxi dashboard, laminated to a market stall's awning. For years that square was a wall for travellers, because the wallets behind it wanted a Chinese bank account. That has changed: Alipay and WeChat Pay both let international visitors link an ordinary foreign card after a passport check, and a lot of trips are now paid for entirely through them.
Which quietly moves your money somewhere new. It is no longer in your pocket — it is behind an app, and an app is only as present as the connection it is sitting on.
What actually changed for visitors
The short version: you download Alipay or WeChat, verify yourself with your passport, add a Visa or Mastercard and start scanning. No local bank, no residence permit. Some travellers can also pay through their own home wallet app, which a growing number of Chinese merchants accept directly.
Two things to check in the app rather than in an article like this one: there are per-transaction and annual caps on foreign cards, and a percentage fee above a small spend threshold. Both have been revised more than once since the schemes opened, so take the figures from the app on the day, not from a blog post.
Every scan is a network request
This is the part the setup guides skip. A QR payment is not a contactless tap; it is a round trip to a server, and at least one side of it has to be online.
- The merchant scans your phone. The most forgiving direction. Your wallet shows a code it generated, the merchant's terminal reads it and does the talking. If your phone briefly drops off the network, a recently generated code can still go through.
- You scan the merchant's code. Now it is your phone making the call, and it needs data to do it. This is the stall, the market, the vending machine, the bike.
- Everything around the payment. Mini-programs for ordering, metro and high-speed rail tickets, ride-hailing, the receipt you want to check, topping up a balance, re-verifying your identity. All of it is online.
Add the apps that get you to the payment in the first place — maps, translation, the restaurant's menu behind another QR code — and the pattern is clear. The moments you most need data are exactly the moments you are least likely to be on Wi-Fi: a taxi, a ticket gate, a queue, a pavement.
What a travel eSIM does here
A VamosData eSIM for China gives your phone mobile data from the moment you land, bought and installed before you fly. Two properties matter for this particular problem.
It works like international roaming: your phone uses the local radio network, but your data is carried out through a gateway outside the mainland and reaches the internet there. That is why your usual apps behave the way they do at home — it was never a local connection to begin with. It is the same ordinary mechanism as a colleague travelling on their home operator, not a trick.
And it needs nothing from the ground. The setup happens on your own Wi-Fi, following the iOS or Android guide, which matters when the thing you would otherwise be trying to download is the thing standing between you and paying for dinner. Your normal SIM can stay in the phone for calls and the bank SMS codes that card verification sometimes asks for, while your VamosData eSIM carries the data.
Check your handset first with the device checker — and note that phones sold in mainland China often have no eSIM support at all.
The honest limits
The moment you join hotel or café Wi-Fi, you are on a local connection again and the usual filtering applies, whichever SIM is in your phone. That is worth knowing before you plan to do your banking from the lobby.
Routing is set by each plan's network partner, so if one specific app is critical to your trip, check the plan details before you depend on it. And a phone that is dead is a wallet that is dead: a power bank is part of the payment stack now, which is its own small headache at airport security.
Carry some cash anyway
Not as the plan — as the floor under it. Rules in force since 1 February 2026 require businesses in China to accept renminbi cash and forbid QR-code-only policies at the kind of places travellers actually spend. In practice a small vendor may still grumble about change, and nothing here is legal advice. But a few notes in a pocket cost nothing to carry and work with a flat battery, in a basement, on a mountain, and in the one restaurant whose terminal is having a bad evening.
A reasonable shape for the trip: wallet apps for almost everything, cash for the gaps, and a connection that does not depend on finding Wi-Fi first. For the wider picture of getting online there, read how to get internet on your phone in China and do you need a VPN in China.