One note with WiFi only Apple equipment (mainly iPads here); there are ways to use diagnostic cables and software to 'rewrite' the device serial numbers to 'byp

One note with WiFi only Apple equipment (mainly iPads here); there are ways to use diagnostic cables and software to 'rewrite' the device serial numbers to 'bypass' activation lock. It requires a 'clean' serial, WiFi MAC, and Bluetooth MAC, the three things a WiFi only device uses to authenticate to Apple during setup. iPhones and other cellular connected devices? Nah, not gonna happen, though there are weird jailbreak-esque 'bypasses' that will get the phone past setup, albeit still 'locked' when you reset.