Librem 5 does not have the suspend implemented yet. All that time the phone was working, not sleeping. Given that, it has pretty impressive battery life to me. Of course, suspend will be implemented.
Check if you have the microphone/camera kill switch on. Many people reported working calls.
Strange, because the camera has been working for a while: Camera development progress - #170 by Skalman.
Strange, it should be there.