I am not familiar with this model phone, the Huawei P10. But, yes, they can tell if your phone died because of liquid. If it was an extremely minute volume of water and a liquid damage indicator was not installed for some crazy reason, perhaps not. (I think it is up to the carriers to place indicator's on this particular phone, but someone please call me out if I am wrong). Just see what the repair center tells you. Water damage can be fixed with ultrasonic cleaners as long as a non-replaceable part is not damaged.