Not true. Your Mac CAN be on a wired ethernet connection. Just as long as it is on the same IP network as your Wifi (techies will say same "broadcast domain"). Most home networks will be set up this way by default. It will fail only if there is a router between your wired and wifi networks. Your iPhone must be on wifi, but your Mac does not always have to be.
10/17/14 at 12:22pm