Deep Sleeping Apps is a Samsung exclusive feature that reduces battery drain by preventing apps from running in the background.
To add an app to the Deep Sleeping Apps list on Samsung, navigate to Settings, Battery, Background Usage Limits, and then Deep Sleeping Apps.
To remove apps from the Deep-Sleeping App list, go to Settings, navigate to the Deep Sleeping Apps list, select Edit Apps, choose the apps to remove, and tap Remove.
Using Deep Sleeping Apps on Samsung phones can extend battery life but may prevent important app updates and notifications.