So I dropped my iphone in the toilet a couple of days ago and I tried the rice trick. Its seems all dried now,so I plugged my phone into the changer and the apple sign showed up. Now what should I keep it plugged in or put the phone back in the rice.
Seems? How long did you put it in rice? At least a couple days, IMO.
Anyway, there's no point in putting it back in rice once you started charging it. Try a DFU restore and see if it starts back up.
Edit: Misread your post. Just see if it comes on okay. If not, then do a DFU. Otherwise, you're SOL, IMO, and will need to go to the store and pay $199 to get a replacement.