Once you have allowed all the necessary permission, the app settings will open up. Here, turn on the first two options to enable the Always On AMOLED services and make sure that the service.
To tweak always-on display, first jump into the Settings menu by pulling down the notification shade and tapping the gear icon. On the Galaxy S8, scroll down to “Lock Screen and Security” and tap into this menu. On the S7, tap into the “Display” menu. Scroll down either menu until you see a section for Always-on Display.Always-on displays (sometimes referred to simply as AoD) started appearing on Android devices a number of years ago. Since their first inclusion in devices like the Samsung Galaxy S7, the displays have become more of a mainstream feature, even making an appearance in smartwatches like the new OnePlus Watch and the Apple Watch Series 5 and 6.It’s called an Always-On Display, and Samsung even allows a small level of customization. This makes it so owners can glance at the screen and get helpful information without turning it on,.
Phablets don't just offer the advantage of a large display however: "Phablets also have bigger batteries, so they'll probably last for 3 or 4 days when utilising the e-Ink display technology."