For your first metro ride, I'd choose the payment method that is easiest to understand at the station in front of you. You do not need to finish setting up every transport app before taking a train. A single ticket can be a sensible first step while you get used to the network.

The important distinction is between paying for a ticket and using something as the ticket. A bank card accepted at a counter is not automatically a card that the gate will read. A shopping payment code is not automatically the transport code for your current city. Once that distinction is clear, the choices become much less confusing.

Compare the main options

Compare the main options
MethodWhen I'd consider itWhat to establish first
Single-journey ticketA first ride or occasional useDestination and how that station sells tickets
City transport QR codeRepeated rides with a working phone accountCorrect city, activated service and usable payment method
Contactless bank cardThe local system supports your particular cardAccepted card type and the exact card/device to use
Transport card or passYou prefer a separate travel cardPurchase, top-up, coverage and remaining-balance arrangements

Choose a primary method and a backup. I'd keep a physical option available if your entire plan otherwise depends on one phone staying charged and connected. Different members of a group should understand their own entry and exit method before they reach the gates.

Start with the route, not the payment screen

Find the departure station, destination station, line and direction. Check the walking route from the destination station to the place you actually want. An exit on the wrong side of a large junction can add an awkward final stretch with luggage.

For a transfer, look at the station's signs and the current route planner. Some journeys involve a longer walk within the interchange than the map suggests. If stairs, luggage or mobility needs matter, check lifts and station access before choosing a route solely because it has fewer stops.

Save the destination's Chinese name. It helps at the ticket counter and when asking which direction to take. A screenshot of the route also gives you something useful if your connection drops.

Buying a single ticket

At a ticket machine, switch to English if offered and select your destination. Read the accepted payment methods on that machine. If the machine does not support the card or payment account you have, ask the service center.

Keep the ticket after entering. Follow the instructions for that ticket at the destination gate. In Shanghai, the official guide distinguishes reusable IC single tickets, which the exit gate collects, from paper QR tickets, which are scanned at both ends. Read which type you have before approaching the exit.

For an unfamiliar ticket, show it to staff and ask how to use it. 请问这张票怎么进站和出站? means “How do I use this ticket to enter and exit?” It is a more useful question than assuming every gate reader does the same thing.

Activating a transport code

Open the transport or travel section of the app you intend to use. Select the current city and the relevant metro service. Complete any displayed activation and payment steps, then open the actual riding code before entering the queue.

Beijing's official guide describes a metro code reached through Alipay's Travel section. Shanghai's guide describes Metro Daduhui and metro services within Alipay or WeChat. These are city transport services, separate from an ordinary merchant payment screen.

If setup asks for a document or payment method your account cannot provide, stop and choose another method for that ride. Do not keep entering altered identity details to get past a form. A support conversation is easier to handle outside the gate queue.

Take a moment to learn how to reopen the code. If traveling with someone less comfortable with phone menus, practise before arriving at the barrier. The useful setup is the one the traveler can retrieve independently.

Contactless cards: Beijing and Shanghai examples

Beijing's published upgrade notice lists UnionPay, Mastercard, Visa, JCB and American Express among its supported contactless card networks. Shanghai's published guide lists eligible UnionPay, Visa, Mastercard, American Express and JCB contactless cards for gate entry. Card eligibility and issuer settings still need to work for the card you present.

Use the same physical card or the same device payment credential through the journey. A physical bank card and the phone wallet linked to it may be treated as different credentials. If you are unsure what you used to enter, go to the service center before trying a succession of cards at the exit.

I would test a supported card on a straightforward outing before relying on it for a time-sensitive airport journey. Keep the other payment option available until you have completed an entry and exit successfully.

What carries over to another city

The basic task is the same: choose a route, obtain a valid travel credential and use the appropriate entry and exit readers. The supported account, card, app and pass can change. Open the next city's official metro information instead of assuming your previous activation has followed you there.

That matters on a multi-city trip. A code showing Beijing is not a useful screen to present to a gate in Chengdu. A city pass may also have different top-up and refund arrangements from another city's product. Check those details before putting more money on a card than you expect to use.

If a gate or phone fails

Step out of the flow of passengers and find the service center. Show the method you used to enter, the station you came from and any error message. Do not force a barrier or follow another passenger through it.

If your phone battery is failing, deal with it while the device still works. Keep your destination address and a way to contact your hotel available separately. When buying a replacement ticket or resolving an incomplete journey, let staff explain how the original journey will be handled.

For the first ride, one successful route is enough. Once you have made that trip, compare the more convenient options for the rest of your stay. For the payment accounts themselves, start with PandaWander's money and payments guide.