How do I pay in stores with Apple Pay?
On iPhone with Touch ID
To pay with Touch ID, hold your iPhone next to the contactless reader with your finger on Touch ID.
On iPhone with Face ID
To pay with Face ID, just double-click the side button, glance at your screen, then hold your iPhone next to the contactless reader.
Your iPhone will display 'Done' to indicate the terminal has received your transaction. The terminal will then indicate if the transaction has been successful. (For some transactions over the local country contactless limit, you may be prompted to enter your card PIN to complete the transaction). Also see how to use Apple Pay in Apps and on the web.