Change iCloud
How do I change my iCloud on a different phone I made a mistake putting in my iCloud on my son new phone instead of creating a new one how do I start over?
Resetting the iPhone is a rather nuclear (read 'last-resort') option... Just go to Preferences>[your name] (it should be the top item) and log out. Then delete any apps or content that your Apple ID put on the device and create a new Apple ID using these instructions: Create and start using an Apple ID - Apple Support
