My wife says pin is ok to give but not iCloud password. This place fixes or sells old iPhones. What is best option. If pin is not given it cannot be erase to resell. Advise? I tried to erase it by find my iPhone but could not get it to work. I have already migrated my child’s iPhone to a new one. I want to sell this old iPhone but they cannot erase it if it has a key or password pin etc. Suggestions?