Are you suggesting they can't hack phones, and just fake entire address book/location history/all messages? That's obviously false. Is the suggestion that there was some sort of massive conspiracy planting evidence*? I strongly suspect judges won't assign much credence to that.

* Such a conspiracy would have to include Cellebrite, the police and Apple/Google. After all, hacking the phone likely means you have the iCloud keys and can download the backups to verify. Furthermore, the conspiracy would always be at risk from the accused choosing to restore the backups to show some evidence wasn't there. So someone at Apple/Google would have to be complicit as well to modify the backups.