iPhone unavailable

If you forgot the passcode on your iPhone, or your iPhone is disabled or unavailable -

Click on the link for instructions on how to reset your passcode without a computer if you have iOS 15.2 or higher.

How to remove your iPhone, iPad, or iPod touch passcode without a computer - Apple Support

Click on the link for instructions on how to reset your passcode using a computer.

If you forgot your iPhone passcode - Apple Support

If your mum's iPhone is temporarily disabled, it means that the incorrect passcode was entered multiple times, and the device has been locked for security reasons. In this case, the only way to regain access to the iPhone is to erase the device and set it up again. However, since the iPhone has an iCloud account that you don't have the password for, it may be difficult to erase and set up the iPhone again.

To resolve this issue, you can try the following steps:

1. Contact Apple Support: You can contact Apple Support and explain the situation to them. They may be able to help you regain access to the iCloud account, which will enable you to erase the iPhone and set it up again.

2. Try to recover the iCloud account: If you have access to the email address associated with the iCloud account, you can try to reset the password using the account recovery process. If the email address doesn't exist, you can try to contact the email service provider to see if they can assist you in recovering the account.

Ultimately, it's important to remember that Apple takes security and privacy very seriously, and they may not be able to provide assistance in unlocking an iPhone or iCloud account without proper verification and authentication.