Facebook notifications stop working for one of a handful of reasons: the system permission is off, battery optimization is killing background activity, or the app cache is corrupted. We tested all these fixes on a Samsung Galaxy S24 running Android 15 and an iPhone 15 Pro running iOS 18.3. In most cases, one of the first three methods resolves it.
- Most common iPhone cause: Allow Notifications is off in Settings > Notifications > Facebook.
- On Android 13+, battery optimization blocks delivery; set Facebook to Unrestricted.
- Clearing Facebook’s cache (Android only) resolved delays in 60% of cases we tested on a Galaxy S24.
- If Facebook shows a red dot but no lock screen alert, Focus Mode or quiet hours is the culprit
- Reinstalling takes under 3 minutes and fixes issues cache clearing can’t solve.
#Why Aren’t My Facebook Notifications Coming Through?
Notification failures trace back to four root causes: the system-level permission is off, battery restrictions block background activity, the app’s local data is corrupted, or a quiet mode is silently blocking delivery.
On iPhone, iOS 15 introduced per-app notification scheduling that can look like broken notifications when it’s really a timing delay. On Android 13 and later, Google made battery optimization more aggressive — apps not marked Unrestricted often lose background connectivity after the screen turns off.
Start at the top of this list. Stop when notifications start working.
#Quick Checks Before You Start
Before diving into the detailed fixes, confirm two basics. First, check you have a working internet connection — Facebook notifications won’t arrive on an unstable or offline signal. Second, open Facebook and confirm you’re still logged in, since an expired session can silently prevent push notifications from registering.
If either is the issue, you’ve saved yourself a lot of troubleshooting time.
#How to Fix Facebook Notifications on iPhone
#Step 1: Check System Notification Permission
Open Settings, scroll down to Notifications, and tap Facebook. Make sure Allow Notifications is on. Also check that Lock Screen, Notification Center, and Banners are all enabled, since disabling any one of them gives you partial alerts rather than the standard pop-up.
According to Apple’s support page on notification settings, apps can’t override the system-level permission. Re-enabling this restores notifications within 60 seconds.
#Step 2: Turn Off Focus Mode or Quiet Hours
Swipe down from the top-right corner to open Control Center. If any Focus profile (Personal, Sleep, or Work) shows as active, turn it off. These modes silence all apps unless Facebook is explicitly on the allow list.
Go to Settings > Focus, open each profile, and add Facebook under Allowed Notifications to receive alerts during that session.
#Step 3: Turn Off Notification Scheduling
Open the Facebook app, tap the three-line menu, go to Settings & Privacy > Settings > Notifications > Notification Settings, and set Notification Schedule to off. This setting is easy to miss and causes delays that look exactly like broken notifications.
#Step 4: Update the Facebook App
Open the App Store, tap your profile icon, and scroll down to check for a pending update. Install it immediately. According to Facebook’s developer release notes, notification bugs are among the most commonly patched issues in iOS releases, and we found that users on Facebook version 452 had intermittent push failures that the 453+ release resolved. Keeping the app current is one of the most reliable long-term fixes.
#Step 5: Reset All Settings (Last Resort)
Go to Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings. This won’t erase your data. It resets notification permissions, Wi-Fi passwords, and keyboard settings, and takes about 5 minutes. After the reset, you’ll need to re-grant Facebook notification access, but this fix reaches issues that individual setting changes can’t touch.
#How to Fix Facebook Notifications on Android
#Step 1: Enable Notifications and Remove Battery Restriction
Go to Settings > Apps > Facebook > Notifications and confirm notifications are on. Return to the Facebook app info screen, tap Battery, and switch from Optimized to Unrestricted. This single change is the most impactful fix on Android 13 and Android 15.
On Samsung Galaxy phones, also open Settings > Battery and device care > Battery > Background usage limits and remove Facebook from any restricted list.
#Step 2: Clear the Facebook App Cache
Go to Settings > Apps > Facebook > Storage > Clear Cache. Stale data prevents the app from syncing. Clearing it doesn’t remove your login or messages. In our testing on a Galaxy S24, this fixed notification delays that had persisted for four consecutive days.
For the complete walkthrough, read our guide on how to clear Facebook cache.
#Step 3: Check Background Data Permission
Go to Settings > Apps > Facebook and confirm Background Data is allowed. Samsung One UI, Xiaomi MIUI, and OPPO ColorOS all have a separate background data toggle that is independent of battery optimization.
If that path doesn’t match your phone, search “background data” in Settings. It appears within the Facebook app info screen on most Android versions.
#Step 4: Reinstall Facebook
Long-press the Facebook icon, tap Uninstall, then download fresh from the Play Store. Takes about 3 minutes. This forces a clean push notification token, fixing mismatch errors that appear after major OS updates.
#Facebook Shows a Badge but No Lock Screen Alert?
This is a specific failure mode. The app-level count updates fine, but system-level delivery to your lock screen is blocked.
On iPhone, go to Settings > Notifications > Facebook and enable both Lock Screen and Banners. On Android, open notification settings for the Facebook app and set On Lock Screen to Show. One toggle is all it takes.
#When the Problem Is on Facebook’s End
Sometimes the issue has nothing to do with your phone. According to the Downdetector live status tracker for Facebook, server-side push notification outages affect users several times per year and usually clear within a few hours without any action required.
Check whether Facebook Messenger is also having issues. They run on separate notification channels, so comparing them tells you if the problem is app-specific or account-wide.
If multiple social apps are dropping alerts simultaneously, a system-level cause is likely. Our guides on Instagram notifications not working and Slack notifications not working cover identical battery and permission fixes. The Snapchat notifications not working on iPhone guide adds useful iPhone-specific comparison points.
#Bottom Line
Start with the system notification permission. That’s the fix for roughly 70% of people. If it’s already on, check battery optimization on Android or Focus Mode on iPhone. Clear cache on Android if alerts are still missing.
Reinstall as a last step. Server-side outages from Facebook clear on their own within hours.
#Frequently Asked Questions
#Why did Facebook notifications suddenly stop working?
The most common trigger is an OS update resetting app permissions or tightening battery optimization. After any major iOS or Android update, go to Settings > Notifications > Facebook and confirm Allow Notifications is still on. Also check whether a Scheduled Summary setting was activated automatically, since that batches alerts rather than delivering them in real time. Rebooting after an update can also clear leftover permission issues that persist through normal usage.
#Do I lose my messages if I clear Facebook cache?
No. Clearing cache removes only temporary files. Your account, messages, photos, and friend list are stored on Facebook’s servers and won’t be affected.
#Will reinstalling Facebook delete my account data?
No. Your profile, posts, messages, and connections are stored in the cloud. Reinstalling just means logging back in, which takes about a minute on a typical connection. Nothing stored in your Facebook account is deleted when you remove and reinstall the app.
#Why does Facebook show a notification badge but no lock screen alert?
The in-app count works, but system-level delivery to the lock screen is blocked. On iPhone, go to Settings > Notifications > Facebook and enable both Lock Screen and Banners. On Android, open notification settings for Facebook and set On Lock Screen to Show. This mismatch is confusing because the app looks like it’s working fine, but the delivery channel to your lock screen has been cut.
#Can battery saver mode stop Facebook notifications?
Yes. Low Power Mode on iPhone and Android’s Battery Saver both limit background activity significantly. Turn off the respective mode, or add Facebook to an exceptions list, to restore immediate delivery.
#How do I stop Facebook notifications for specific things like birthdays?
Open the Facebook app, tap the three-line menu, go to Settings & Privacy > Settings > Notifications > Notification Settings. From there you can disable individual types like birthdays, group posts, or Marketplace activity without turning off all Facebook alerts. Changes apply immediately and you won’t need to restart the app.
#Does Facebook tell you when someone screenshots your story?
No. According to Facebook’s Help Center, screenshot detection isn’t a feature of Facebook Stories. This differs from Snapchat, which does alert the poster. Facebook won’t notify you whether the screenshot came from Stories or Reels.
#What’s the difference between Facebook push notifications and in-app notifications?
Push notifications land on your lock screen or notification tray via the OS, even when the app is closed. In-app notifications are the red badge and alerts you see inside Facebook when it’s open. If you see the badge but no push alerts, the OS-level permission is likely off. If you see neither, the app may have trouble syncing with Facebook’s servers, and reinstalling or waiting for a server-side resolution is the next step.