The Commonwealth Bank will allow its customers to use their iPhones to make tap-and-go purchases, joining ANZ as the second big four bank to launch Apple Pay.

After a 2016 brawl between three major banks and Apple delayed the widespread introduction of the payment service in Australia, CBA on Friday said it would next month make Apple Pay available across CBA and Bankwest in response to strong customer demand.

CBA will allow its customers to access Apple Pay. Credit:Josh Robenstone

Apple Pay allows customers to upload their credit or debit card details onto their phone, which means they can use the device to make contactless payments. It also enables quick and simple online purchases via phone, including by providing a fingerprint or a face scan.

ANZ and a large number of smaller banks already offer the service, which claims to be more secure than using a plastic card, because the card's details are not stored on the phone itself.