Forgetting the password to your iPhone can be a stressful situation, especially if you need to erase all data from the device. However, there are ways to wipe an iPhone clean even without the password.

1. Use iCloud to remotely erase the device:

If 'Find My iPhone' is enabled on the device and you have access to your iCloud account, you can remotely wipe the iPhone by following these steps:

1. Go to iCloud.com and log in with your Apple ID.
2. Click on 'Find iPhone'.
3. Select your iPhone from the list of devices.
4. Choose 'Erase iPhone' to wipe all data.

2. Use iTunes to restore the device:

If you have previously synced your iPhone with iTunes on your computer, you can use the following steps to erase the device:

1. Connect the iPhone to the computer you synced with.
2. Open iTunes and wait for the device to sync.
3. Click 'Restore iPhone' to erase all data and settings.

3. Contact Apple Support:

If the above methods do not work or you are still unable to wipe the iPhone without a password, contacting Apple Support is recommended. They may require proof of ownership to assist you in erasing the device.

It is important to note that wiping an iPhone without the password will result in the loss of all data on the device. Therefore, it is advisable to regularly backup your iPhone to prevent data loss in such situations.