Confirmed by the customer service, the Honor V10 rear camera lacks an optical image stabilization (OIS) for its rear camera (same goes to the front camera). The reason why an Optical Image Stabilization (OIS) is important is that it can vastly improve the low-light performance of the camera when shooting under limited lighting conditions like at night or in a dark indoor place.
The performance differs between different OIS systems. The difference is measured in stops. So for example, if the V10 had an OIS system with 2-stops advantage, this means that you could have shot the same image with two shutter speed stops less and still achieve a sharp image. The required shutter speed for a sharp image based on the shutter speed rule of thumb is 1/focal-length. Which means that if you shoot with a 30mm lens, you need to shoot with at least 1/30s shutter speed to get a sharp image. With an OIS with two stops advantage, you could have gotten a sharp image with a 1/8s shutter speed, which is two stops less than 1/30s.
An OIS also helps to reduce video shake when recording videos. So overall, I am disappointed to hear that the Huawei Honor V10 lacks an OIS for the main camera.