Hi there! I understand that your phone keeps looping back to the Jenius Bank app login screen, even after you've deleted the app. That sounds pretty disruptive, so let's get to the bottom of it.

To start, could you let me know a couple of things?
1. Are you seeing this looping behavior only when you try to open the Jenius Bank app, or is it happening randomly on your phone?
2. Since you deleted the app yet it still happens, are any pop-ups or notifications related to Jenius Bank appearing outside the app?
3. Also, have you checked if any related browser tabs or web apps might be running in the background?

Meanwhile, here are some initial steps you can try on your Android 10 device with WebKit browser environment:

1. Clear Browser Cache and Data:
- Go to your device’s Settings > Apps > WebKit (your browser) > Storage
- Tap on Clear Cache and then Clear Data
This will remove any stored login sessions or cached pages that might be causing the looping login screen.

2. Check for Background Processes:
- Sometimes, apps or web services run in the background even if the app is deleted.
- Go to Settings > Apps > Running (or similar) and see if anything related to Jenius or banking appears. Force stop those if found.

3. Review Installed Apps for Possible Clones or Fake Apps:
- Sometimes, apps with similar names or clones can cause unexpected behavior. Double-check if there are any apps installed that look like Jenius Bank or have similar names.

4. Reset Default Apps (if applicable):
- If any banking-related links or shortcuts are opening automatically in an app or web view, resetting default app settings might help.
- Go to Settings > Apps > Default apps and reset them to your preference or clear defaults.

If after these steps, the problem continues, it might be worth scanning your device with a security app to check for any malware or adware that could be hijacking your browsing or app behavior.

Could you try these and let me know what you observe? That will help me narrow down the issue and guide you further.

Are you satisfied with these initial steps so far?