Add Dark mode in all apk like Google and add some new features in the old smartphone like galaxy s8 and please update the old smart phone to UI 2.5 AIR 3.0 PLEASE
doubt you'll be able to use one ui 3 on old unsupported phones without custom rom. Besides dark mode in google apps are under jurisdiction of google not Samsung
I not understand the Samsung is giving the update only the new phones and Bajet phones like A10 A20,A30. And the s8 and S9 are price is graterthan this smart phone than why samsung is not giving the updates of ui 2.0 aur 2.5 to this phones...
Because Samsung has an update limit for all smartphone which is two major update the s8 and s9 got there two updates so thats why they are not giving any more updates other than security patches
