Somehow I have it in my head that DG, BP, or MP said the phone didn't go straight to voicemail until later. That's why I thought it hadn't just died during video. I don't know the source, though.
The foreigners timeline.
ETA relevant bit
2:30
Libby take video of Bridgeman
2:49
CME (female witness) walked the bridge, saw a man before that and a couple under the bridge, did not see or hear the girls or the possible suspect at the bridgearea.
2:52
"Flannel Shirt Man" (older man mid to late 70's, a witness) sees a man ( possibly the suspect) leave the area just few meters north of the meeting point.
3:02
Possible suspect is seen at Freedom Bridge (not sure by whom?).
3:11
Derrick, Libby's dad call Libby while passing Wilson Bridge, no answer, he leave message at voicemail; he is almost there.
3:14
Derrick, Libby's dad call Libby again saying he has arrived at the meeting point,
no answer just voicemail, so he walk towards the trailhead, didn't see anybody.
Derrick walk further and meet an older man (the old FSM man witness?), coming from the high bridge, and ask him if he had seen the girls, but he had not but tell Derrick that there
was a couple (a man and a woman) under the bridge. Derrick then take the trial leading down to the creek to see if the couple was there, but Becky (Libby's grandmother), who is telling all this, does not remember if Derrick saw the couple or not.
Derrick then walk back to the meeting point.
3:30
Derrick call Becky telling her that Libby's not answering her phone and now the calls goes straight to voicemail.
3:30
Becky calls and sms Libby, but no answer.
3:35
Derrick walk down to the Freedom Bridge and on his way he meet the older man again (the FSM witness ?).
4:00
Derrick has walked back to the meeting point.
4:00
Becky calls her husband Mike Patty at his work and tell him she had called and sms'ed Libby, but no answer.