iCloud is Apple's cloud service that allows you to sync/store data, between all of your Apple devices.
- Are all Apple devices connected to this?
Yup! You might not know this, but every Apple device (iPhone, iPad, Apple Watch, Mac, etc.) is linked to an iCloud account.
So, if you are returning or selling an Apple item, make sure to disconnect from your iCloud account. If you forget to do this, the refurbishment (and therefore sale) of your device will not be possible.
To disable your iCloud account on your iPhone, just follow our detailed guide: How do I remove iCloud from my devices?