Missing notifications can make you feel disconnected, especially when messages or alerts only appear after you open the app. On the Xiaomi 15 Ultra, this usually happens because background activity is restricted to save battery. Once you adjust a few settings, notifications start coming in on time again.
Why Background App Notifications Are Not Working on Xiaomi 15 Ultra
- Battery optimization is limiting background activity.
- Background data is disabled for specific apps.
- Notification permissions are turned off or restricted.
- Auto start is disabled for important apps.
- System restrictions are stopping apps from running in the background.
1. Disable Battery Optimization for the Affected App
Battery optimization is the most common reason notifications fail to arrive in the background. When enabled, the system prevents apps from running freely, which delays or blocks alerts.
Open Settings, and then tap Battery.
Tap App battery saver, and then select the affected app.
Choose No restrictions to allow it to run freely in the background.
2. Allow Background Data Usage
Apps need background data access to deliver notifications in real time. If this is disabled, alerts only show once you open the app.
Open Settings, and then tap Apps.
Tap Manage apps, and then select the affected app.
Tap Data usage, and then enable Background data.
3. Check App Notification Permissions
Even if an app is allowed to run, notifications will not appear if permissions are restricted. This often happens after updates or manual changes.
Open Settings, and then tap Notifications.
Tap App notifications, and then select the affected app.
Enable Allow notifications and make sure all alert types are turned on.
4. Enable Auto Start for the App
Auto start allows apps to launch in the background after reboot or when needed. Without it, notifications may arrive late or not at all.
Open Settings, and then tap Apps.
Tap Permissions, and then tap Auto start.
Enable Auto start for the apps you rely on for notifications.
5. Turn Off Background Restrictions
Some system settings limit background processes to improve performance. These restrictions can interfere with timely notifications.
Open Settings, and then tap Apps.
Tap Manage apps, and then select the affected app.
Tap Battery saver, and then choose No restrictions.
6. Restart the Phone
A restart refreshes background services and clears temporary system issues. It is a simple step that often restores notification delivery.
Swipe down from the top of the screen to open Quick Settings.
Tap the Power icon, and then tap Restart.
Wait for the phone to reboot and test notifications again.
Once background limits are removed, notifications on the Xiaomi 15 Ultra usually return to normal immediately. Keeping key apps unrestricted ensures alerts arrive even when the phone is idle.
FAQs
Why do notifications only appear when I open the app?
This happens when the system restricts background activity. Disabling battery optimization and enabling background data usually fixes it.
Do Xiaomi phones block background apps by default?
Yes. Xiaomi devices aggressively manage background apps to save battery, which can affect notifications if settings are not adjusted
Will disabling battery optimization drain my battery faster?
It may slightly increase battery usage for specific apps, but it ensures reliable notifications, which is often worth the tradeoff.
