4K HD Wallpaper: Hacker's Paradise
It's been a while since was featured the 1st image from Ankit's portfolio, but this one is really cool. From his courtesy can be downloaded free for personal use as desktop background and homescreen phone.
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many phones)