Solution Steps

1. Restart your phone regularly.
2. Clear app cache: Settings → Apps → Select app → Storage → Clear Cache.
3. Delete unused apps and files.
4. Update Android OS: Settings → System → System update.
5. Free up storage: Keep at least 10% storage free.
6. Disable animations: Developer Options → Reduce animation scale.
7. Factory reset if phone is very slow (back up first).