If the Facebook app keeps crashing, lagging, or freezing on your iPhone 8 — especially after an iOS or app update — you’re not alone. This is one of the most common issues iOS users face with the Facebook app. Whether it’s caused by a buggy update, corrupted data, or a deeper iOS conflict, there are several things you can try to fix it.
Here’s how to troubleshoot a Facebook app that’s not working right on your iPhone 8.
Quit All Background Apps
Sometimes background apps crash and cause system-wide glitches.
How to close background apps:
- Double-press the Home button.
- Swipe left/right to find Facebook.
- Swipe up to close it — or swipe up on all running apps.
After that, restart your iPhone:
- Hold the Side button until “Slide to power off” appears.
- Slide to shut it down. After 30 seconds, turn it back on.
Clear Facebook App Cache
Cache files can become corrupted and crash the app.
To clear Facebook cache (if the app opens):
- Open Facebook.
- Tap the three lines (More) at the bottom.
- Go to Settings → Account Settings → Browser.
- Tap Clear Data.
If the app won’t open at all, skip to the reinstall step.
Update Your iPhone to the Latest iOS Version
Sometimes a system update fixes bugs that crash apps.
- Go to Settings → General → Software Update.
- If there’s an update available, download and install it.
- Restart your iPhone after the update.
Update the Facebook App
If Facebook rolled out a fix, you’ll find it in the App Store.
- Open the App Store.
- Tap Updates at the bottom.
- Tap Update next to Facebook (or tap Update All).
Once updated, restart your iPhone and launch the app again.
Delete and Reinstall the Facebook App
If the app is still crashing, it may be corrupted.
To uninstall Facebook:
- Tap and hold the Facebook app icon.
- Tap the X, then Delete.
To reinstall:
- Open the App Store.
- Search for Facebook.
- Tap Download or the cloud icon to reinstall.
Reset Network Settings
Network issues can cause apps like Facebook to act up, especially if they rely on a stable connection.
- Go to Settings → General → Transfer or Reset iPhone → Reset.
- Choose Reset Network Settings.
- Enter your passcode and confirm.
Rejoin your Wi-Fi and try the app again.
Reset All Settings
This won’t erase your data, but it resets system settings that could be causing app crashes.
- Go to Settings → General → Transfer or Reset iPhone → Reset.
- Tap Reset All Settings.
- Enter your passcode and confirm.
Do a Factory Reset (Last Resort)
If nothing else works and you’re sure the issue isn’t just Facebook, a clean slate might help.
To factory reset:
- Backup your iPhone to iCloud or iTunes.
- Go to Settings → General → Transfer or Reset iPhone → Erase All Content and Settings.
- Follow prompts to reset the device and set it up again.
After setup, install Facebook and test it before restoring apps and settings.