Hi @TabS8Ultra
No this shouldn't be happening unless the phone has been set up to reset at a pre determined time.
Please ensure the phone's software is up to date as well as your apps in the Playstore and Galaxy Store.
I would suggest to try the following.....
1. Clear Cache Files from the phone's System Partition Section > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too.
If the issue continues........
2. Safe Mode > https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ turns off downloaded apps and themes etc which may highlight an app or theme that's causing conflict.
If this does not help then as a last resort back up and factory reset.
Ultimately a Samsung Service Centre can help by looking at the phone.
Daily Driver > Samsung Galaxy s²⁴ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
