Hi! Something weird happened yesterday, as I was preparing my iPhone to sell. When I chose "Erase All Content and Settings", it never asked for my credentials (even when Find my iPhone was activated). My friend (the buyer) was able to set it up with his own Apple ID. I am a little concerned about this process, as I thought the login process was mandatory before erasing the phone and/or deactivating "Find my Iphone"... Any thought? Thanks!