I'd like to be able to join a call from my Portal then switch the call to my phone and vice versa. This way I don't have to hang up and call again. This works great between other messenger devices, but not on Portal. However, the call waiting feature of portal is wonderful and should not be sacrificed to enable this! Portal is the only facebook messenger device that allows another caller to call the user (ringing both on phones and portals) while another call is active, which is absolutely wonderful.