As speculation surrounding what Apple is going to do in wearable technology with its so-called iWatch grows, excitement is building. However, with watches from companies like Samsung, Motorola and others having seen mix results so far, investors, the media and consumers are wondering: what’s the best use case for it? Voice messaging. In a recent research note, UBS analyst Steve Milunovich believes that voice messaging could be a “killer app” for the iWatch, something that would set this apart from other smartwatches out on the market. At WWDC, Apple added voice messaging capability to Messages as part of iOS 8. Milunovich noted that he met with Tim Cook and the discussion turned to people speaking into their phones, sending voice, rather than texts. “Porting