I used my Xperia V for about a minute underwater to shoot a video of fish with the flashlight on. After taking it out of the water, the screen went dark but the flashlight was still on. I held on the power button to unlock it and the phone vibrated twice. I repeated it again and the light turned on again. After a while I held on the power button and finally the flashlight turned off but I can't turn on the phone after that. I took it back home and rinsed the phone (because it was submerged in a river) while holding the ports tightly closed, dried it with a towel and finally opened it up. There was some water swirling inside the back cover but I don't think it's water damaged. The battery and circuit indicator has turned pink.
It doesn't charge or turn on anymore. Should I just leave it to dry?