Chill/Sleep mode... I think errr
Well, through commercials, but they were mainly successful because everyone (almost) knows and trusts Apple, so when the latest product is released, everyone flocks to it because it's new, cool, sleek, and awesome.
They also do partnerships with Verizon and Sprint or whatever.
<span>The demand curve is based on the price of an item and the amount that people are willing to pay for it. Marketers want to see this, because it helps them figure out how to advertise to the public and what the public wants. This can be useful in pricing items so that they are lower than that of the competitors.</span>