How to Delete an iCloud Account from an iPhone / iPad,Removing the Existing iCloud Account from iOS
First you’ll need to remove the existing iCloud account that is in use on the iOS device:
- Open the Settings app and go to “iCloud”
- Scroll down under all the settings to find “Delete Account” (or “Sign Out”) and tap on that
- Confirm the removal of the iCloud account from the device by tapping on “Delete” or “Sign Out”
Note that the newest version of iOS uses “Sign Out” in the iCloud settings panel, whereas the immediately prior versions use “Delete Account” – the effect is identical, it’s just a change of wording. Both will log out of the iCloud ID account on the iPhone or iPad.
Note this removes all documents that are from iCloud from the phone or iPad, but not from iCloud itself. Whether or not you want to save contacts and calendar data is up to you.
Once the iCloud account has been removed from the device, you’re left with a blank iCloud login. Here you can either create a new Apple ID and accompanying iCloud account, or change to another iCloud account.