Apple products in movies

I can't find a definitive source from Apple directly, but many mentions that Apple doesn't pay for product placements. Here's but one:

http://bgr.com/2015/03/06/apple-product-placement-movies-2014/

Though Apple doesn’t pay for product placement, it certainly has no problem with bestowing large boxes of Apple hardware to production companies in the hopes that iPhones and Macs make it onto some of the biggest TV and movie hits of the year.

The implication that Apple never pays directly for product placement, but seems happy donating props as needed.

Apple really doesn't pay for the product placement. But they have a person to ensure that its products get as much screen time as possible.

From Network World,

While Apple does not pay for product placement in TV shows and movies, that hasn't prevented Apple products from showing up in all kinds of places in the media. As for how it all happens behind the scenes, Apple marketing chief Phil Schiller once explained that Apple has a point person who works closely with Hollywood to get Apple products as much screen time as possible.

While other companies have to pay for their product placements, Apple manages to do it free. How? Here it is. From this Dailytech answer,

"Apple won't pay to have their products featured, but they are more than willing to hand out an endless amount of computers, iPads and iPhones," said Gavin Polone, producer of HBO's Curb Your Enthusiasm. "It's kind of a graft situation."

Other reference