Partners in crime

Newt and Kay are blissfully spending their summer like any other pair of best friends would. They go on a camping trip with Newt's family to appreciate the summer weather and the outdoors. While ambling off together to collect wood for a campfire, Newt and Kay return to the campsite to find no one there.
Everything is gone.
Everyone is gone.
Newt and Kay are left rendered, lost and helpless. All they have are their useless cell phones. They try and follow pathways to reach some kind of civilisation but end up only more lost than they were before.

"Wait!" Kay squealed. She stood on a rock with her phone held high above her head. "I have 1 bar!"
Newt rushed over. "Can you send a text?"