Lots of people take their phone out of the box the day they buy it and put it directly in a case. Not everyone thinks about covering the screen, mostly because folio covers tend to take away the benefits of always-on features like those found in the Galaxy S9. Samsung's own LED case tries to solve this by giving you a simple LED panel on the folio part of the case to deliver bits of information you would normally have on the display. This isn't the first time Samsung has made an attempt at an LED folio, but the Galaxy S9 version is the first time this design has ever really been worth using. See at Amazon

Instead of using the light from the display to show you information, the Galaxy S9 LED case has its own LEDs built in to the folio. As soon as you snap the phone into the case, these LEDs light up a small part of the cover and show you the time. This same space lights up every time you close the case, revealing the same information. You can also tap the power button on the phone while the cover is closed and the LEDs will light up to show you a couple of different things. When it is not showing you the time, the LED case offers some animations for a few different kinds of notifications. Charging the phone will reveal a lit up battery, you'll see a ringing phone when there's an incoming call, and a simple alarm clock appears when an alarm goes off on your phone. All of these things are designed to make part of a notification visible to you at a glance, so you can decide if it is worth opening the cover to see the full notification. In this updated version of the case, Samsung offers some small color customization, instead of the default white used for everything out of the box. The white is easily the most visible though, so it's what I stick with.