Smartphone companies have added a new feature called Waterproof to protect smartphones from falling into the water. This feature is not present in all smartphones. You will not get this feature if you use Oppo Reno7 5G (China).
The Oppo Reno7 5G (China) is one of the best phones on the market. As good as it looks, its performance is also great. However, the phone missed a feature. That is the waterproof feature.
Thus, it is more likely to be damaged if it falls into the water. It is not able to absorb water from inside. You must be careful about this.