It’s only natural that manufacturers will continue to explore what’s possible with smartwatches, looking for ways to make them experience-expanding commodities, instead of smaller remote screens for our smartphones. What we see today is a patent, applied for by Apple, which may use the link between an Apple Watch and an iPhone to automatically adjust the latter’s volume levels in accordance with the current environment.
But the rabbit hole goes even deeper. The patent outlines a way in which the Watch would be able to determine whether the iPhone is in a bag, pocket, or otherwise away from the user. The outlined method would have both devices use their microphones to "listen" to the environment. The Watch will then send its data to the iPhone, who will in turn analyze both audio recordings, listening for various discrepancies and out-of-phase frequencies. After that's done, the handset will not only know how loud it needs to ring, but will also try to readjust the way it listens for the user's voice (possibly to help with Siri better understanding commands).
It sounds a bit twisted and tangled, especially for a simple thing such as setting one’s phone volume levels in accordance with whether we are in the office or on the street. Especially with the iPhone, this is rarely an issue, as most users keep it either on mute (vibrate only) or full-blast volume. But, of course, the fact that there is a patent for the technology most certainly doesn’t mean that it will be implemented anytime soon. For all we know, this could just be Apple brainstorming various solutions, and patenting them just in case it decides to use them.