It’s common for your Galaxy A35 to feel laggy after the One UI 7 update due to the system reoptimizing or background processes adjusting to Android 15. Try these quick fixes:
1. Restart your phone to refresh the system.
2. Clear the cache of apps: Go to Settings > Apps > [select app] > Storage > Clear cache. Repeat for frequently used apps like Facebook, Instagram, Chrome, etc.
3. Update all apps in the Galaxy Store and Play Store.
If the issue persists, give your device a few days to fully settle after the update, performance often improves as the system finishes background tasks.
