Removing iCloud
(Apple devices): Disconnect/removing your iCloud account
You can disconnect your personal iCloud account even if your device isn’t with you.
If you still have your device:
Go to Settings > General > Reset > Erase all content and settings
If you no longer have your device or the screen is not operational:
- Go to https://www.icloud.com/and log in to the same iCloud account connected to your device.
- Click the Account icon (top corner) and select Manage Apple ID
- Go to devices and select the device you are selling
- Click remove from account