The Icon Pack is Polycon ( ) and the Wallpaper is Wallrox Mountain ( ). The Nova customizations are Nova Launcher v5 Stable. Just go to Nova Settings, then Desktop, followed by Search Bar style and then Bar Style #4. It is possible to add the pill like widget on your home screen.
It will make your phone look like Google’s Pixel. If you want a new option, this innovative solution will bring something different to your phone.
