On phone calls, the audio stays loud and clear for the rider, as well as for the caller on the other end of the line. The rider’s audio is muted until they start talking, which can sound a little bit like they cut out because it eliminates ambient noise entirely, but it’s much better than having wind noise in the background when nobody is talking. With an iPhone connected, hitting the phone button on the Freecom will activate Siri, allowing you to voice-to-text or make phone calls based on your voice activation. Saying “Hello Cardo” in helmet will also let you do certain things like play music or call preprogrammed speed dial numbers, but being more accustomed to using Siri, I found it easier to just stick to that. FM radio is also an option, using Radio Data System to help automatically locate stations that come in clearly. The Freecom 4+ will also automatically adjust volume based on ambient noise, so when you come to a stop, the audio that you had turned up to compensate for wind and engine noise will quiet down.