samsung s21 ultra 5g ultra slow

Based on the information you have provided I have a few things that may help with this issue. 😁

1. Clear Cache: Go to Settings > Apps > select the app > Storage > Clear cache. This helps remove temporary files that might be causing the slowdown.

2. Check Storage: Ensure that you have enough available storage space on your device. Delete unnecessary files or apps to free up space, as low storage can impact performance.

3. Update Software: Make sure your phone's software is up to date. Manufacturers often release updates that address performance issues. To check for updates, go to Settings > Software update.

4. Safe Mode: Restart your phone and hold the volume down button until "Safe mode" appears. This will help identify if a third-party app is causing the slowdown. If the performance improves in safe mode, a downloaded app may be the culprit.

5. Battery Optimization: Verify if battery optimization settings are affecting your phone's performance. Go to Settings > Battery > Battery optimization and ensure that performance isn't restricted.

If these steps do not resolve the issue, I recommend reaching out to Samsung customer support or visiting an authorized service center. They will be able to provide further assistance based on your device and its software version.