In the end, he's okay, and as such, this isn't worth all of the man-hours the CPD has put on this case. With cameras on EVERY block, it wouldn't be this hard to find the perps.

Maybe it's not good enough for the police, but I'm thinking he could just sit with an investigator and show them his call logs w/o letting them have full access to his phone. It would verify when and whom he called during the hours in question.