new iphone 7 old apple id
how do i change my apple id on my iphone 7
iPhone 7, iOS 13
Question marked as
What do you mean by "change"?
Change your Apple ID email address while using an iPhone 7? --> Change your Apple ID - Apple Support
Change the Apple ID that is signed into an iPhone 7? --> Sign out of iCloud on your iPhone, iPad, iPod touch, Apple TV, or Mac - Apple Support
then
Sign in with your Apple ID - Apple Support