Place the damaged phone in a bucket or cup of rice. It depends if your phone fits in a cup or not. Then, wait 24 hours and your phone SHOULD be fixed. If not, go on youtube or a repair store (where you got your phone from or where ever) and let them fix it. (IF it is fixable) It might cost some money but your phone will probably be fixed! If it's not, you might need another one or find a better store. I hope this helped!