A normal phone screen redraws itself 60 or 120 times a second, even when nothing moves. An LTPO screen can slow right down when the picture is still.
What you notice
Scrolling still feels smooth at 120 Hz. Reading a page or looking at a photo drops it to as low as 1 Hz, which saves power.
Is it worth it?
If you keep your screen on a lot, yes. It is one of the reasons the Nova X lasts a long day on a 5000 mAh battery.
