So today I accidentally dropped my iPhone 7 into water like 5cm depth and I took it out inmmediatelly but it fully sumerged in the water. I turned it off and let it dry, 10 hours later I turned it on and it seems fine, it works normal but I shaked it to see if it had water on the speaker and I noticed that I can hear a sound inside the top of the phone, near the camera and apple's logo, is that normal? or does it comes from the water of today? It only sounds when I shake it, like if it had something loose inside.