I can't seem to find call background on my setting in my samsung s9 sm-g960w one ui 2.5

[Natik1429]

 

[Tallman]

Call background feature is added since OneUI 3.1. However, OneUI 3.1 not support S9. Unfortunately you won't see the call background feature on your S9.

[Helenna]

Hi Natik1429, as said by Tallman unfortunately your device won't support Call background feature.

Thank you.