So, let's admit there is an iPhone 6 running iOS 10.3.2 and it's owner doesn't exist anymore. The phone is working but is always offline, because it is iCloud locked. Everything is working, except internet and simcard. Music, camera, all good. If you would turn on WiFi, it will be locked, asking for the password. So, my question is - what can be done to remove the owner from the phone while in offline mode? Or how to make it not connect to iCloud server if online? Will a backup from an activated iPhone 6 restored on this phone work? What version of iOS is OK to do this?