But..........

The tweeter wasnt using an iPhone! He was using Android!
Pretty much the "Investigation" was a farce. They found a way to have a amenable split from each other and took it. He looks like he did nothing wrong (Except spill the beans on everything from his hatred of Hinkie/Brown/Noel/Okafor/Embiid/Fultz to leaking private team info like Medical records and trades to his wife), and the Sixers get a way to move on and get a new GM.
Also, what are the odds that "She" just used her phone. I mean people (Specially well off people) have multiple devices, multiple phones, and multiple tablets. Very easy for them to just not turn one into the people investigating. Like, "Yeah, here you go, here is my phone, and my wifes phone that has been factory reset. NOPE! No other devices, we just use our phones!".