This is strange: Apple sends the code to the trusted device, asking to prompt it into an old, factory reset, device
So, this senior friend I help with devices upgraded to the latest iOS15 and had this strange problem. He then upgraded to iOS16 too, hoping to solve the bug, but it is still here.
iPhone 13 Mini. Suddenly, whenever he tries to access to his AppleID via phone, or to iCloud and to AppleID via web, Apple sends a 2FA verification code to this phone he is using (iPhone 13 Mini), asking him to "insert this verification code in" his "other iPhone". The other iPhone has been factory reset last November, when I duplicated it into this new iPhone 13, and he never had a problem until yesterday.
I tried to access to his trusted device list, but it is "unavailable" (yes, I turned off the Wi-Fi), and he can't even access to Passwords & Security. Verification codes keep arriving to this phone, but the request is to prompt 'em in the "other iPhone". Very frustrating. No other option on display when the code arrives.
What's happening? How can I help him?
Thank you so much.