While there are advancements in almost every aspect of smartphones on a nearly daily basis, there is one area in which phones have seemingly been the same for years: voice calls. More specifically, call quality. Sure, we have nifty tools like VoIP and the like, but, overall, the quality of conversation whilst talking on a mobile network could use some oomph.

That's exactly what Fraunhofer IIS, looks to bring to the table at Mobile World Congress next week.