Apple Id
Previous owner did not erase apple id in my phone. How do i erase it?
Question marked as
You can't. You will need to contact the previous owner to have them log out of iCloud or go to https://www.icloud.com/find/ My Phone and erase the device, then remove it from their account. If you can’t do that, the device is useless.
Turn off Activation Lock - Apple Support. https://support.apple.com/en-us/HT201441