It is a downgrade. But all the features I like in s8 is there in A8 such as SamsungPay, Waterproof, fingerprint scanner etc.

A8+ also have better front cam, larger screen, 6 GB ram, can use 2 sim cards simultaneously along with SD card (s8 you need to pick 2 out of 3), flat screen (I really dont like edge screen, always on the 'edge' takut jatuh and pecah and hard to find cheap screen protectors), dual messenger out of the box (s8 need to wait oreo).

I'll miss wireless charging, Motion Picture and the ease of finding accessories for phones (it was a lot easier to find for S8 on AliExpress). But I think that's about it. The rest of the S8 feature I dont really use much lol.

My main focus is better front cam as I selfie more than I took actual photos. And back camera on this phone is decent enough for that rare moments I actually take photos using back cam. I actually spend a lot of time downloading camera mod trying to get the perfect pixel 2 front cam setting but its very effortless with this phone.

Feature I didnt really expect in A8? FM Radio. I dunno why its there but I am quite surprised lol.