Recently, a mysterious Samsung new machine appeared in the WiFi Industry Alliance website. As usual, the WiFi Industry Alliance doesn't expose as much new machine parameters as the running sub database. We now know that the new machine is named SM-A450F, and the factory is pre installed with Android 7.1 system.
From the code, it seems we can speculate that this new machine belongs to the Samsung A series, because before the A series of new machine code is all SM-A beginning. But the problem is that Samsung, A3, A5 and A7 (2017) have been released, then the positioning of this new machine is a bit confused.
Even gsmarena, a foreign technology media, has expressed similar questions to me, so it has to wait for more arguments about it in the future.