So far, we've seen Samsung's virtual assistant, Bixby, on its Galaxy S8 and S8+ smartphones, and it's going to be built into the upcoming Galaxy Note8 too. Today though Bixby has arrived on a mid-range device in Samsung's home country of South Korea. We're talking about the Galaxy A7 (2017), a phone that just launched at SK Telecom (that's one of the Korean carriers). The version that SKT sells has Bixby on board, despite the fact that it doesn't feature a special physical button to launch it - this A7 (2017) is identical in terms of hardware to the version that was announced in January....
Source: http://www.gsmarena.com/samsung_galaxy_a7_2017_has_bixby_in_south_korea-news-26159.php