After laying off hundreds of European employees, shutting down a major Chinese factory, shipping an all-time low number of devices during the first three months of the year, and reportedly preparing another massive round of firings, Sony's mobile business is essentially hanging by a thread. 

In fact, the Japanese tech and entertainment giant's smartphone division has gotten so small and unprofitable in recent years that a new Electronics Products & Solutions department was created, combining Xperias with the Home Entertainment & Sound and Imaging Products & Solutions ...