You can use this Galaxy S9 Mockup to showcase your UI Design on a Smartphone to your clients in a minimal and sleek way. You just need to put your design in the smart layer and it is done. You can modify the background colour according to your requirements. You need to have photoshop to edit it.
File Format: PSD
Dimensions: 4000×3200 px
Size: 3 Mb
License: Free for personal & commercial use