Just bought one with 65", the android version to upgrade my 50" hisense due to the fact that I find it a hassle to switch between the fire stick and its native OS. also since its android, I want all the streaming features, apps and whatnots in 1 location. I was thinking it would be able download and view my CCTV app through the Sony TV. But no. The hikvision app is not available on the store. Maybe through APK it might work.
Now the positive side, the interface is quite impressive. Very similar to the playstation OS. PQ and SQ is good as expected from a decent brand. No white spots at certain angles.
To maximize the streaming apps, I suggest you get a VPN.