Is this your phone?
I recently purchased an IPhone 6s from Trish off of Kijiji. Now as it turns out the phone is locked with the Apple ID. So my son can not use it.
I have no way to contact Trish as the ad was taken down. Now I suppose this could be a stolen phone. I don’t know. All I know is it is useless to us.
I am posting a picture of the email associated with the phone. If you recognize it and this is your phone comment below and I will contact you. Or if this is your phone and you don’t want please unlink it from the Apple ID so my son can use it.