how to unlock my original phone that had my friends info on it ?
I lent someone my iPhone 6 and I got it back and I reset it all to restart the activation process. she forgot all her Cloud info. how can I unlock MY phone that had her info on it ?
Take your iPhone and the documentation of the original purchase from Apple to Apple and ask them to unlock it.
You have probably learned by now that you do not under any circumstance loan out your iPhone ever.