So I have a new iPhone running iOS12 and Id like to use a backup from another iPhone running 9.3.5.. Everybody mentions clean installing to avoid any issues so that's what I did. I setup the phone as new and would like to migrate my photos and WhatsApp across everything else is working fine. The problem is WhatsApp and Photos are not backing up as individual options in iCloud in order for me to just sync them onto my new phone (they are backing up as one complete backup however). So the issue I am faced with is I have no choice but to apply this backup. The question I have is; does applying this backup no longer count as a clean install? I had a discussion with the Apple guy (who I think is incorrect) but he mentions that backing up to a computer and then restoring is not the same as backing up to iCloud. He said if you want to do a clean install you can use iCloud because that doesn't backup the phone's "unclean" data. It just takes the bare minimum to get you started on the new iPhone which means your getting a clean install even if your using an old backup from an older iOS (9.3.5) device. Is this true? Or does installing an iCloud backup carry all the "accumulated leftover" data and dump it onto the new device no longer making it a clean install?