How can I get my phone to work?

I have an lg en v3. A month ago i was driving and my water bottle emptied out into my bag and my phone got water damaged. I soaked it in a bag a rice and about a week later it fully came back to life except that it doens't ring wen someone texts/calls me. Now my phone randomly turned off (it was on a full charge) and wen I try to turn it back on it just shows the verizon wireless logo and the screen flashes white every couple of seconds. Is there anyway to fix my phone without having to go to the verizon store? I had a back up phone sent to me a month ago but the issue was that half of my stuff was saved to my phone and some of it was really important.