My husband is a quadriplegic (no use of hands at all). I know that "Hey Siri" would be a good way for him to make a phone call. But how could he answer a call? And how could he end a call using his voice only? Before I buy him an iPhone6, I would like to know that he could use it independently.
At this time a phone call can't be ended with hey Siri. There is something called switch control that may work for him. Maybe a occupational therapist could try one out with him. This is a video demonstration switch control. Here is some written documentation about it as well: iOS: Switch Control helps you navigate your iOS device - Apple Support
-AJ
hands free phone use
