Which mobile operating systems can I use the Barclaycard app on?
The Barclaycard app is available on iPhones running iOS 8.0 or later and Android Ice Cream Sandwich 4.0 and above.
To find out which mobile operating system version your smartphone is running:
iPhone: Select Settings General About Version (iPhone) or Settings About phone Software information.
Android: Select Settings About phone Software information.
However, this can differ slightly from phone to phone.