Hi there! I understand how frustrating it can be to see a blank page when trying to log in to your City Bank account. Let's try to get this resolved together.

First, could you let me know which browser you're using on your iPhone? That will help to narrow down the troubleshooting steps.

In the meantime, here are a few general solutions that often work for blank screen issues:

1. Clear Browser Data: Sometimes, accumulated data can cause display issues. Here’s how to clear your browsing data:
- Open your Settings app.
- Scroll down to Safari (or whatever browser you are using).
- Tap on "Clear History and Website Data."
- Confirm the action.

2. Disable Extensions: If you have any ad blockers or other extensions installed, they might interfere with the login page. Try disabling them temporarily.

3. Update Your Browser: Ensure that your browsing app is up to date. Go to the App Store and check for any updates.

4. Restart Your Device: Sometimes, a simple restart can resolve many issues.

5. Try a Different Browser: If you're using Safari, try Google Chrome or vice versa.

If none of these steps solve the problem, please let me know the specific browser you're using and any other details that might be relevant, and we can explore further options!