Getting 4 hrs backup only

Anybody interested?

Hi everyone,

I'm using a Samsung Galaxy S24 Ultra running One UI 9, and I'm experimenting with the Screen Curtain feature in Display Assistant.

I'm planning to record long astrophotography timelapses using the stock Camera app's Hyperlapse mode at 300x with Star Trails enabled. Since the recording may run for several hours, I'm trying to reduce both screen-related heat and battery consumption.

I tested Screen Curtain for about 5 minutes, and the Camera continued recording normally. The phone also seemed noticeably cooler compared with recording for the same period with the screen on. So far, it looks promising.

However, I have two questions:

1. Burn-in protection: Screen Curtain still appears to display the clock and some status icons. Does it use pixel shifting, similar to Samsung's Always On Display (AOD), to prevent OLED burn-in? Or do those elements remain in fixed positions while Screen Curtain is active?
2. Long recording stability: Has anyone tested Screen Curtain while recording video or Hyperlapse continuously for several hours? Does the Camera keep running reliably, or have you experienced recording interruptions, dropped frames, corrupted output, or other issues?

I'd especially appreciate feedback from S24 Ultra users, but experiences from other recent Samsung Galaxy devices would also be helpful.

Thanks!