'Freight' generally implies the bulk transportation of large quantities of goods. When you said 'small stuff', I didn't realize you meant small quantities of stuff.

iPhones and iPads aren't really great examples in this space, because they're often sold before they even come off the assembly line. Apple chooses air freight for (many of) its products simply because that's the most efficient way to operate its particular supply chain.

Mea culpa, you're right, they do ship mostly using air freight.