Why has Nolan Wells' phone not been turned over?

More than a month after Nolan Wells' death, investigators still have not looked into the teen's cell phone, which his family has reportedly not yet turned over to police.

Wells' parents have hired civil rights attorney Ben Crump to do a review of the investigation, and they want there to be a joint investigation of the phone involving the state, the FBI and their independent experts.

The cell phone could hold critical information about where Wells was before he died, what kind of messages he was sending and whether any content was deleted...