What happens when Samsung cameras are used for a long time in hot weather? It's ok when the weather is cold.

I don't know what you mean by jitter. If the camera shakes when shooting, it may be because of the principle of thermal expansion and contraction, and the screw fixation between parts becomes loose. But this situation is rare. If you know everything about shooting, it may be because you have different shooting conditions in two kinds of weather. The shutter speed in winter is faster than that in summer. Caused by it.