As I'm not using the affilate stuff, I implemented the Smart App Banner on my website like this:
<meta name="apple-itunes-app" content="app-id=...">
On my iPad Mini (iOS 7.0.2) it's showing up without any problem, on my iPhone 5 (same version) it's not showing up.
Both got the app installed already (the banner should show "Open").
Do you know what could be wrong? Thank you!