Hi there! Sorry to hear the Runna app isn't opening on your Samsung phone even after clearing the cache. Let me help figure this out. To get started, can you tell me a bit more?

- Which Samsung model are you using?
- What exactly happens when you try to open the Runna app? (e.g., does it freeze on a loading screen, show a black screen, or crash?)
- Have you tried restarting your phone since clearing the cache?
- Is your Runna app updated to the latest version from the Google Play Store?

Sometimes apps can get stuck at a loading screen or crash due to outdated versions or minor glitches. Here’s a step-by-step you can try if you haven’t yet:

1. Restart your phone: A quick reboot can clear temporary issues.
2. Check for app updates: Open Google Play Store, go to My Apps, and ensure Runna is updated.
3. Clear cache and data again: Go to Settings > Apps > Runna > Storage > Clear cache, then Clear data. Note clearing data will reset app settings but won’t delete your account data.
4. Check storage space: Make sure your phone has enough free storage; low space can cause apps to malfunction.
5. Reinstall the app: Uninstall Runna, then reinstall it fresh from the Play Store.

If the app still won’t open after these, it might be a compatibility or software-specific issue on your Samsung device. In such a case, sometimes Runna gets stuck on the logo or black screen on certain Samsung models. There are reports of similar issues online which occasionally get resolved in later app updates or by contacting Runna support for a version optimized for your phone1.

Could you please try those steps and let me know what happens? Then we can dig deeper if needed.