Is there any burning tool for android?

Ok. i have wet my phone (into da toilet).I have dried it out and putted in sack of rice for a 20h and now its working but one thing buggs me its the screen.The screen has wet spots but its working normally.Soo i need burning tool to heat up and remove the black spots.
Any recommendation is allowed but im not gonna dry it out on heat!

I hope i putted in correct category.