Nexus 5 Flat Mockup!
Good for making mockup apps etc. and it's a smart object file included so you can place your own screens or so within the device frame.
Two colors. Black/Grey and White.
 
Free for all types of use, but you must point to this post if you decide to share it further!
Resolution of the "screen" is 1080x1920 as in the real one.