Incorrectly regarded as goofs
Courtney's phone shouldn't necessarily have been running out of battery power if she didn't stop filming. Many phones will run out of internal memory way before they run out of power when filming in full resolution, especially when the limited internal memory hasn't been expanded with an extra SD memory card. Furthermore, most phones still use the FAT32 file system, which limits the size of a single file to 4GB max. These and many other scenarios could have caused the phone to stop filming after 5 to 15 minutes and after that switch to the default inactive state that could keep the phone running for a few days when not used.