Answer of your leaving message
What is the micro sd card used for?
Is it used as a buffer for uploading videos and should I be concerned about the fact, that it is 96% used?

2018-08-13 06:53:52****************************************
Thank you.

by Wong Ling Tseng

Yes, it is for upload buffering and for timeline on live screen playback. No need to concern because it is auto rewriting when full. Thank you