4K HD Wallpaper: Coronado Bridge
The bridge can be seen live in San Diego or in this lovely night 4K picture taken by Monika Thorpe and avaialble from her courtesy under CC By license. Optimized here for fit on desktop backgrounds and homescreen phones.
Widescreen Desktop / Macbook: 2560x1600 (fits on: 1920x1200, 1440x900, 1280x800)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x1536 (compatible with almost all tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many smartphones)