How to fix galaxy s6 edge water damage, no service?

A

AC Question

So stupidly I went on a water ride and got my phone wet and then I dropped it in a creek right after. So my phone turns on and everything seems to be working okay, but I do not have any service. I have checked and do not have mobile networks as an option to possible fix this problem. Also, my SIM and IMEI say unknown or not available. Any ideas on how to fix this problem would be greatly appreciated.