The other day my pantech slate got full of water, i put it in rice then it finaally turned on but my keys wont working, so i dried it with a hair dryer and its fine now

You can take the battery and the back off the device and place in completely submerged in a bag of white rice and leave it in there for 1 to 2 days this will help absorb the moisture, this should fix it if the water did not damage the circut boards if the water damaged the circut boards then the device is fried