Apple CEO Tim Cook said they could have sold even more if supplies had been available.
The technology lets smartphones communicate wirelessly with other devices such as point-of-sale terminals.
The latest record is available for free on Apple’s iTunes online stores to half a billion iTunes users.
Apple is forging ties with the fashion world as it plots its foray into the field of wearable technology.
Plaintiffs accused Apple, Google, Intel and Adobe of conspiring to avoid poaching each other’s employees.
Experts and mobile developers have called out inadequacies in Apple’s cloud-services security.