My 64Gb 6plus has over 26Gb of photos on it. In iTunes, settings, Photos it says that iCloud photos is "on". So, the question is, how do I delete them from the iPhone and not from iCloud. When I try and delete from the phone, it says "This photo will be deleted from the iCloud library on all of your devices. This is not what I want to do. Just want to clear up some memory for the phone, as only 12 Gb left.