i dropped my iphone 3gs into a bucket of water, then i took it out and tried drying it using the fan and hair dryer. then later i found out that i have to put my phone into a bag of rice. i left it in there for 4days. when i tried charging it, it wouldnt turn on after a while. after it shows the silver apple, it shows the pinwheel spinning and spinning... how do i turn it back on?