Sony has taken various stabs at handheld gaming over the years. Remember the PlayStation Portable? How about the followup PlayStation Vita? Now would be a good time to introduce yet another handheld console, if that was the direction Sony wanted to go. But with smartphones now both powerful and ubiquitous, Sony sees little reason to go down

Source: Hot Hardware – Sony Sours On Handheld Gaming Console, Will Focus On Home Gaming And Smartphones