A dollar or two? Per device that infringes?

Apple has sold over 3 billion iPhones and 4.5 billion iPhones, iPads, and iPods together.

$5.7B seems low if every one of those devices infringes.

If it’s iPhone 6s and later and all watches (for taptic input), that’s around 2 1/3 billion phones and 1/3 billion watches, so even just $2/device gets you into that range.

iPads and iPods don’t infringe because they’ve never had any kind of haptic feedback.