4K HD Wallpaper: Dark Waters
This abstract photography is sick! One of the best abstract images I've seen and featured in gallery. This will be my new phone background starting now. Check at full size to see if you like and download under CC0 license from courtesy of Tomasz Bazylinski.
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)