Hi! I see you're having trouble entering the activation code for the HSBC app on your new iPhone with iOS 18.7. Let's get this sorted out.

To better assist you, can you tell me:

- Are you not able to enter the code at all, or is the code being rejected once entered?
- How are you receiving the activation code? (e.g., SMS, email, or through another device)
- Have you tried restarting your phone or checking your network connection?

In the meantime, here is a step-by-step general approach to fix common activation code issues on the HSBC app when switching to a new phone:

1. Restart your iPhone: Sometimes a quick reboot helps reset network settings and app connections.
2. Check network connectivity: Ensure you have a strong internet connection, either Wi-Fi or cellular data, and that roaming is on if you're traveling.
3. Ensure the app is the latest version: Go to the App Store and verify you have the current HSBC app version installed.
4. Generate a new activation code if possible: Sometimes the old activation codes expire quickly. Try requesting a fresh code from the HSBC app or website.
5. If using Security Device (Digital Secure Key): On your old phone, open the HSBC app, select 'Generate security code', then choose 'Set up a new device'. Follow the prompts to get the correct activation code on your new device.
6. Check date and time settings: Go to your phone’s settings and ensure date/time are set automatically for accurate security timing with the activation code.
7. Try logging out and back into the app: Sometimes simply restarting the session can fix code acceptance issues.

If after these steps you still can't enter or validate the activation code, there may be specific account settings or security measures in place that require help from HSBC Support directly. You can reach out via [email protected] for specialized assistance.

Does any of this make sense so far? And have you tried any of the above already? Your answers will help me guide you better!