You can use this Clay Smartphone Mockup to display your UI Design in your presentation to your clients in a simple and clean way. You just need to put your design in the smart layer and it is done. You can modify it according to your requirements. You need to have photoshop to edit it.
File Format: PSD
Dimensions: 4000×3000 px
Size: 42 Mb
License: Free for personal & commercial use