Why do I lose notifications from certain apps after the nightly cleanup?

If an app is not set to run without restrictions, the daily optimization can pause its background activity. Check Settings ➔ Apps ➔ select the app ➔ Battery and allow background activity for that app instead of turning off the whole feature.

Does Auto optimization affect apps I use every day?

No. It only targets apps and processes sitting idle in the background while the screen is off, apps you actively use are not touched.

Does disabling Auto optimization drain the battery faster?

It can, since background apps and cached processes stay active longer without the daily cleanup, which raises RAM use and can slightly increase battery drain over time.

Samsung

Samsung: Turn Auto Optimization On or Off

If your Samsung phone closes background apps and clears memory every night without warning, the daily 'Auto optimization' routine is likely running while the screen is off. Some people want it active to keep the device fast, others notice messaging apps or trackers losing connection right after the nightly cleanup. Whether to keep it enabled or turn it off depends on how you rely on background apps.

Updated: 04.08.20264 min5 steps

Version

Step by step

1 / 5

Tap on Settings

1 / 5

Scroll or use the buttons for the next step

Live simulator

Android 11 · One UI 3

Tap on Settings

1 / 5

Scroll or use the buttons for the next step

Feedback

Was the guide correct?

Help others: confirm the path or report a problem.

Confirmations

Forum verified this path

Samsung

Turn Auto Optimization On or Off auf Samsung

Samsung's daily Auto optimization runs once every 24 hours while your screen is off. It clears cached background processes, closes idle apps, and frees up RAM to keep performance steady over time.

The feature belongs to the device maintenance tools inside Battery and device care, separate from per-app battery limits. Because it only fires when the display is inactive, you will not notice it interrupting foreground use, but background sync for messaging or fitness apps can be cut short right after it runs.

To enable or disable it: Tap on Settings ➔ Tap on Battery and device care ➔ Open the Menu ➔ Tap on Automation ➔ Enable or disable Auto optimize daily.

Turn it off if an app regularly loses notifications or drops a connection overnight. With it off, the phone relies only on manual cleanup or individual app battery settings, so memory usage and background clutter can build up faster.

If only one app misbehaves, adjusting its individual battery permissions is usually a better fix than disabling the whole daily routine.

Frequently asked questions

No. It only closes background processes and clears temporary cache, it does not remove personal data, photos, or installed apps.

Compatible devices

Tap your device — opens its hub with matching guides.

Android 11 · One UI 3

No compatible devices are listed for this version.

Other

Samsung: Turn Auto Optimization On or Off

Step by step

Was the guide correct?

Turn Auto Optimization On or Off auf Samsung

Frequently asked questions

Compatible devices

More guides for Samsung

Turn Silent Mode On or Off

Turn Auto Capitalize On or Off

Turn Airplane Mode On or Off

Auto Click After Pointer Stop: Turn On/Off