There's a theory that much of what we get in leaks is from Hunter swapping phones with the kids, mostly Natalie. He wipes his phone he's been using for communication with Joe, he hands it to Natalie, starts using a different phone, Joe's a retard and calls the old number and leaves a voicemail. The "laptop" itself may be from Natalie getting one of Hunter's hand me downs with the iCloud account still active on it which she then used to restore the iCloud backup and then she or someone else got that data out, so on and so forth.