If the app is too slow, clear the App Cache in settings or switch to the Facebook Lite APK.
| Problem | Solution | |---------|----------| | "App not installed" | The APK is too new. Download an (try v300 or v350). | | "Parse error" | The APK file is corrupted. Re-download from APKMirror. | | App crashes on login | Clear app data: Settings → Apps → Facebook → Clear Data → Try again. | | Play Store says "Your device isn't compatible" | This is normal. Use APKMirror or Facebook Lite instead. | apk facebook android 5.1