Forgetting your iPhone password can be a frustrating experience, especially when you need immediate access to your device. If you find yourself in this situation, don't panic! There are a few steps you can take to regain access to your iPhone:

1. Use iCloud to remotely erase your device and then restore it from a backup.
2. Connect your iPhone to a computer and use iTunes to restore it to factory settings.
3. Put your iPhone into recovery mode and restore it using iTunes.
4. Contact Apple Support for further assistance if the above methods don't work.

It's important to note that these methods will erase all data on your iPhone, so make sure you have a backup of your data. Additionally, setting up a secure password manager can help you avoid future password-related issues.

Remember to regularly back up your device to prevent data loss and consider using biometric authentication methods like Touch ID or Face ID for added security.