I removed the old Apple ID and other old Apps too and when I want to install the same App via the new Apple ID then it asking me the old Apple ID passwordIf the apps were originally downloaded with the old Apple ID then you have to be logged in (or at least enter the password) for that ID.
If they're free apps you should be able to delete them and re-install under the current Apple ID. Paid apps would have to be re-purchased.
All old passwords?Try reset the phone completely,and set it up as "new iPhone" . Of course,to do that you need all old passwords and pin codes for the phone.
I removed the old Apple ID and other old Apps too and when I want to install the same App via the new Apple ID then it asking me the old Apple ID password![]()
You need old unlock code,and old Apple account password,could also be necessary to reset mail accounts with the right passwords.All old passwords?