Does it matter what handset or operating system I'm using?
For iOS, you'll need to be using iPhone 5 or later and be on at least iOS version 11 or later. For Android, you'll need to be on Android version 5.1 or later.
For iOS, you'll need to be using iPhone 5 or later and be on at least iOS version 11 or later. For Android, you'll need to be on Android version 5.1 or later.