At first glance, it may appear that the PS4's user interface shares little in common with the PlayStation 3's "XrossMediaBar" interface, a familiar sight for owners of Sony's 2006-era televisions.
Using Rest Mode keeps the system ready to quickly come back online, and allows some background functions, but it saves power by keeping the screen dark and shutting down most tasks. Turning a PS4 ...
If your PS4 is unable to get online, you won't be able to take advantage of many of the console's most important features, like multiplayer gaming, streaming video, and installing new games.