A portable communication device that is a first electronic device, the first electronic device comprising: an interface for electronic communication with a second electronic device; one or more digital processors; and at least one memory. The processors and memory are collectively configured to implement simultaneous radio frequency voice communication between a user and multiple other ones of the devices. Voice communication comprises: transmitting audio data corresponding to speech of the user to each of the other devices, receiving audio data from each of the other devices, mixing the received audio data, and transmitting the mixed audio data to the user so as to direct to the user combined and simultaneous speech of users of each of the other devices. The processors and memory are also collectively configured to implement transmission of at least one audio stream received from the second electronic device to each of the other devices.