How can I use Android with Moto X to make hands free call including activating the speaker phone?

[AC Question]

Need to use android with Moto X to make hands free call including activiating speaker phone.

Trying to use Android phone with Moto X hands-free. After making a call, is there any way to put it on speaker phone - hands-free. Looking for a totally hands-free cell phone for a person who is disabled and can't use their hands at all. Cell phone would be mounted on w/c.