1. Change Call Background
OneUI 3.0 lets you customize the call screen layout and to change call background for each SIM. This handy customization option is cool and can also help you quickly differentiate what number you are getting your call on.
To change call background, open the dialer app and go to settings from the triple tod menu at the top-right. Next, select ‘Call background’. You can now choose between two layouts and apply any video as the call screen background.
