iPhone 5 dropped in toilet. When I attempt to turn it on grey screen?
Dropped my iPhone 5 in toilet yesterday. Immediately took it out of the toilet and dried it with a towel, my phone was working fine. I walked away for two minutes, came back and the phone had shut itself off. I attempted to turn it on again, it turned on to the normal apple startup page, then dimmed to a grey and NAND error codes began lining my screen. I shut it off and put in in rice for 24hrs. This morning I woke up, turned it on and again the grey screen appeared. I read some things saying it was the hardware and to plug it into my computer and try to restore it. I plugged it into my computer and the phone started up as it normally would when getting turned on, the touch screen was quite unresponsive but it still functioned. I unplugged the phone to see if it would continue to work and it shut off immediately. Now again when I try to turn it on it goes to the grey screen again. I have since put it back in rice, what else should I do?
iPhone 5, iOS 7.0.1