20 Examples of Android & iOS UI Design Inspiration
UI Design - weather app Dribbble - Weather by Bill S Kenney
Here is a free PSD mockup you can use to showcase your apps. Made with vectors so you can scale it as you want. Created by Victor Stuber.
I decided to make a Nexus 4 in Photoshop because there are very few resources for Android designers. It's made with pure vector layers so it's scalable to any size. Free for personal and commercia.