Hi there! I understand you’re having trouble connecting to your banking app using your phone number. To get us started, could you tell me a bit more about what happens when you try? For instance, do you see any error messages, or does it just not respond at all? Also, is this a new setup on your iPhone running iOS 18.7, or does this problem just suddenly appear?

Once I have a bit more detail, I can guide you through some clear steps to try resolving this.

In the meantime, here are some initial things to check:

1. Confirm with your bank that the phone number registered with your account is correct and active. Sometimes banks require you to opt-in to receive verification codes like OTPs (one-time passwords).

2. Make sure your iPhone has a stable internet connection, either via Wi-Fi or mobile data, as this is crucial for the app to communicate with your bank's servers.

3. Try restarting your iPhone to refresh any temporary glitches.

4. If the app is installed, check if there is an update available in the App Store. Updating the app can often resolve connection issues.

5. If the app uses SMS for verification, verify that your phone can receive texts from unknown numbers and that no SMS-blocking features are active.

If these basics check out but the problem remains, we can proceed with clearing app cache (though iOS doesn’t have a straightforward cache clear option, reinstalling the app works similarly) or checking if the bank has any known outages.

Let me know what you observe when you try to connect, and we’ll continue from there!