> what is the exact motivation for including FM chips that are going to be disabled in the first place? A single chip can do multiple things (WiFi, Bluetooth,

> what is the exact motivation for including FM chips that are going to be disabled in the first place? A single chip can do multiple things (WiFi, Bluetooth, FM, etc). For the chip manufacturer, it's simpler and cheaper to provide a single version of the chip with everything, and let the device manufacturer simply disable the unused parts, than to provide several different versions of the chip, some with FM and some without FM. That is, the phone manufacturer decides "I want Bluetooth and WiFi", and the chip they chose for that happened to also have FM. Since they won't use the FM part of the chip, they don't even have to connect the "FM antenna input" pin, saving the space on the board that would be used for the corresponding trace(s) and passive components (which they also don't have to install, reducing the costs).