Charter and Comcast offer wireless service as part of an agreement with Verizon, using a mobile virtual network operator (MVNO). These two companies decided they couldn’t offer a competitive service without the iPhone, which gives Apple a bit of leverage in negotiations.
Exact details of these deals aren’t known, but Comcast has to sell a certain number of subsidized iPads. Comcast pays for the difference between the retail price and the subsidized price. For example, Comcast sells the 6th generation 32 GB 9.7-inch cellular iPad for $422.99. Apple and Charter sell the same device for $459. Comcast also sells Apple Watches.
Charter sells Apple TVs at $7.50 per month for 24 months — or $180, the retail cost of an Apple TV. Alternatively, a customer can lease a Charter set-top box for $7.50 per month. In other words, Charter offers an Apple TV at the same price as a Charter set-top box, but a customer ends up owning the Apple TV and returning the Charter box.