What devices can I use Apple Pay on?
You'll need one of the following devices running on iOS 8.3 or above:
iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus, iPhone SE (or later)
Apple Watch (paired with iPhone 5 or later)
9-7 inch iPad Pro, 12-9 inch iPad Pro, iPad Air 2, iPad mini 4, iPad mini 3
(You can only use your iPad for in-app purchases)