Missing Facebook notifications on your OnePlus 15 can make you feel disconnected from messages, comments, or important updates. You open the app and everything is there, but alerts never arrive on time. This usually happens because Android aggressively manages background activity, notification permissions, or data access, and a few targeted fixes can bring notifications back to normal.
Why Facebook Notifications Are Not Working on Your OnePlus 15
- Notifications are disabled for Facebook at the system level.
- Battery optimization is restricting Facebook in the background.
- Background data or background activity is limited.
- Notification categories inside Facebook are turned off.
- The app cache is corrupted after an update.
1. Make Sure Facebook Notifications Are Enabled
If notifications are turned off in system settings, Facebook cannot send alerts at all. This is often changed accidentally when managing app permissions or silencing notifications.
Open Settings, and then tap Notifications.
Tap App notifications, and then select Facebook.
Turn on Allow notifications and review each notification category.
2. Turn Off Battery Optimization for Facebook
Battery optimization can stop Facebook from running in the background. When this happens, notifications only appear when you open the app manually.
Open Settings, and then tap Battery.
Tap App battery management, and then choose Facebook.
Set it to Allow background activity or No restrictions.
3. Allow Background Data Usage
Facebook needs background data to deliver notifications in real time. If background data is restricted, alerts may be delayed or never arrive.
Open Settings, and then tap Mobile network.
Tap Data usage, and then select Facebook.
Enable Background data and allow unrestricted data usage.
4. Check Facebook Notification Settings Inside the App
Even if system notifications are enabled, Facebook has its own notification controls. Some categories may be turned off without you realizing it.
Open Facebook, and then tap the Menu icon.
Tap Settings and privacy, and then tap Settings.
Tap Notifications and enable alerts for comments, messages, and activity you want to receive.
5. Clear the Facebook App Cache
A corrupted cache can interfere with notification delivery. Clearing it refreshes the app without deleting your account or personal data.
Open Settings, and then tap Apps.
Tap App management, and then select Facebook.
Tap Storage usage and clear the cache.
6. Restart Your Phone
Restarting refreshes system services and reconnects background processes. This can immediately restore notifications if the issue was caused by a temporary glitch.
Swipe down from the top to open Quick Settings.
Tap the Power icon, and then tap Restart.
Wait for the phone to boot up and test notifications again.
Facebook notifications on the OnePlus 15 usually stop working because of background restrictions rather than app bugs. Once permissions, battery settings, and data access are configured correctly, notifications should arrive instantly and consistently again.
FAQs
Why do Facebook notifications only appear when I open the app?
This usually means background activity or battery optimization is restricting Facebook. Allowing background usage fixes this behavior.
Do I need to keep mobile data on for Facebook notifications?
Yes. Notifications rely on either mobile data or Wi Fi. If both are off or restricted, alerts cannot be delivered.
Will reinstalling Facebook fix notification problems?
Reinstalling can help if the app itself is corrupted, but most notification issues are fixed by adjusting system and battery settings first.
