Make contactless payments using Apple Pay on iPhone
With your Apple Cash, credit, and debit cards stored in the Wallet app 
on iPhone, you can use Apple Pay for secure, contactless payments in stores, transit stations, and more.
Find places that accept Apple Pay
You can use Apple Pay wherever you see one of these symbols:
In Japan, contactless readers may also display the following symbols:
Ask Siri. Say something like:
“Where can I use my Apple Pay?”
“Show me coffee shops that take Apple Pay”
“Gas stations that accept Apple Pay”
Pay with your default card on iPhone X and later
Double-click the side button.
When your default card appears, glance at iPhone to authenticate with Face ID, or enter your passcode.
Position the top of iPhone within a few centimeters of the contactless reader until you see Done and a checkmark on the screen.
Watch the demo to see how it works.
Pay with your default card on iPhone 8 and earlier
Rest your finger on Touch ID.
Position the top of iPhone within a few centimeters of the contactless reader until you see Done and a checkmark on the screen.
Watch the demo to see how it works.
Pay with a different card instead of your default card
When your default card appears, tap it, then choose another card.
Authenticate with Face ID, Touch ID, or your passcode.
Position the top of iPhone within a few centimeters of the contactless reader until you see Done and a checkmark on the screen.
Use a rewards card
At participating stores, you can receive or redeem rewards when you use Apple Pay.
Add your rewards card to Wallet.
At the payment terminal in the store, present your rewards card by holding iPhone near the contactless reader.
Apple Pay then switches to your default payment card to pay for the purchase. In some stores, you can apply your rewards card and payment card in one step. In other stores, you need to wait until the terminal or cashier asks for payment.
To have your rewards card appear automatically when you’re in the store, tap 
on the card, then turn on Automatic Selection.
Pay for transit
You can pay for your ride with Apple Pay. (If you’re using Express Transit, see Pay for your ride with Express Transit.)
Make sure your device is turned on (it doesn’t need to be connected to a network).
As you approach a fare gate or board the bus, do one of the following:
iPhone X and later: Double-click the side button, then glance at iPhone to authenticate with Face ID or enter your passcode.
Other models: Double-click the Home button with your device on the Lock screen, then rest your finger on Touch ID.
Position the top of iPhone within a few centimeters of the contactless reader at the transit gate until you see Done and a checkmark on the screen.
See the Apple Support article Ride transit with Apple Pay.
Pay for your ride with Express Transit
With Express Transit (available in certain regions), you don’t need to authenticate with Face ID, Touch ID, or your passcode, and you don’t need to wake or unlock your device or open an app.
Set up Express Transit; see the Apple Support articles Using Suica on iPhone or Apple Watch in Japan and Use Express Transit with Apple Pay in Beijing and Shanghai.
As you approach a fare gate or board the bus, make sure your device is turned on (it doesn’t need to be connected to a network).
Position the top of iPhone within a few centimeters of the contactless reader at the transit gate until you see Done and a checkmark on the screen.
On models that support Express Cards with power reserve, your Express Cards may be available for up to five hours when your iPhone needs to be charged. To check if Express Cards are available when iPhone needs to be charged, press the side button (doing this often may significantly reduce the power reserve for Express Cards). If you turn off your iPhone, this feature isn’t available.
Use Apple Pay at stores in Japan
You need an iPhone model that supports Apple Pay in Japan and a card issued by a bank in Japan.
Tell the cashier what type of card you’re using, as shown on the front of your card in Wallet.
Complete the payment.
Note: If you have Location Services turned on, the location of your iPhone at the time you make a payment may be sent to Apple and the card issuer to help prevent fraud. See Set which apps know your location on iPhone.