The iPhone 6s could use Bluetooth headphones to listen to novels, but it had to meet some conditions: 1 Bluetooth headset requires support for AirPlay on Apple devices. Can be used on iPhone, iPad, and Macs. 2. The Bluetooth headset needs to be connected to the Apple device correctly to ensure that the Bluetooth audio output function is used. 3. You need to use a Bluetooth headset that supports voice input so that you can easily enter the notes you need to write while listening to the novel. If all the above conditions were met, the iPhone 6S could listen to novels through Bluetooth headphones.