To use Appe Pay on your iPhone you first have to set up your wallet. To do this you open teh wallet icon and add a credit or debit card that you wish to make purchases with. When you are ready to actually use your Apple Pay all you need to do is have the app open and hold your phone near to any contactless card reader. An image of your ard will appear onscreen.
Place your finger on the fingerprint reader and in just a few moments your purchase will be made. Do you use a different card be sure that you have it on file too, when the card ico appears onscreen tap the card and pick a different one. The process is simple, straight forward and all around easy for anyone to do.