Can’t download any apps .
I have recently got a knew phone and transferred my data from my old 6s to my knew iPhone 12 . I wanted to remove my Apple ID from my 6s so I did however now when attempting to download an app on my 12 a notification pops up saying “sign in required” I press okay but it just pops up again and again and I can never sign in . So now I can never get an app . Anyone know how to fix this ?
iPhone 12, iOS 17