02-24-2016, 10:51 AM
The owner must sign out of Find My iPhone and should erase the phone:
https://support.apple.com/en-us/HT201351
http://9to5mac.com/2015/08/25/how-to-saf...-trade-in/
https://support.apple.com/en-us/HT201351
http://9to5mac.com/2015/08/25/how-to-saf...-trade-in/