you can also just sit in the car, check something on the phone for a little while, then the camera should also change to parking mode and then you can flick the camera with a finger too, that should also set off the G-sensor.
I know some cameras will do that even if you have just stopped the car but the engine are still running ASO, a few minutes of no movement and it change to parking mode.
Last week i learned that when i have dry wiped my windscreen and with the wiper that need replacement, then going back and forth the wiper rattle on the dry screen and that was enough to set off the G-sensor on my Viofo A119 mini camera, but funny enough my driving did not set off anything.
And i have experienced cameras that would set off the G-sensor all the time due to my,,,,,,, "frisky" driving style, even if it is a POS little 3 CYL 65 HP car i drive, that really in it self are far from potent.
Mind you normally i do have G-sensor off for while driving, but i do use it during parking mode, beside the fact i use low bitrate if i can.
Low bitrate on my Vantrue E2 are a bit funny CUZ it is also time lapse with 15 FPS, other cameras i have do low bitrate regular 30 FPS video, but can also do time lapse, thats just another mode to select.
I am going to try and see if my Vantrue camera can work with the Viofo hard wire kit i have in the car, but it will have to wait untill the next time i put a camera in the car as right now the plug can not reach the E2 system even if its actually right beside the Viofo camera,,,,,, wires tailored a bit too good this time,,,,, normally not the case as i meddle with the cameras so often,