After the firmware, the phone asks for the old apple id
I bought an iphone 8 about a week ago, the old owner deleted my apple id with me, then I added mine and used it for several days, checked on the icloud page that the phone is displayed in "find iphone" then updated to the latest version of ios and the phone requested apple id of the previous owner, (whom it is no longer possible to contact) when I enter my apple id the phone says that "it cannot be used to unlock it" please explain where I made a mistake, and is it possible to do something with the phone?
Each Apple device is linked/associated with an Apple ID of the person who did the setup.
Activation Lock prevents anyone who is not the owner from using this iPhone.
To unlock the Phone, you need the Apple ID and password of the previous owner, that were used during set up.
So have to contact the previous owner.
Apple cannot help you.
The previous owner have to read -> this Apple article: What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch
What to do before you sell, give away, or trade in your iPhone, iPad, or iPod touch - Apple Support
Then the previous owner has to remove the iPhone from his account, see this Apple article:
Check your Apple ID device list to see where you're signed in
Check your Apple ID device list to see where you're signed in - Apple Support
Then you can sign in with your Apple ID.
See the following Apple articles:
Activation Lock for iPhone, iPad, and iPod touch
Activation Lock for iPhone, iPad, and iPod touch - Apple Support
How to remove Activation Lock
How to remove Activation Lock – Apple Support (UK)
The All Too Common SAD Reality of Buying a Used iPad/iPhone
The All Too Common SAD Reality of Buying … - Apple Community
