This gave me ugly chills.
Libby's dad, trying to reach her at 3:11.
IMO BG was already out of the area.
Or he'd have destroyed her phone.
Do we know from where LE recovered it? Was it still in her pocket?
JMO
LE have said the phone was in the same general area where the girls were found.
In an interview with the producers of the podcast DTH, Sgt. Riley said that they found the bodies and established a crime scene perimeter, but then they found the phone and they realized that the crime scene needed to be expanded to include the bridge. So it seems from that information that the girls and the phone were found at different times.