How to get a iPhone 5 to charge when it was only damp, not completely broken?

I used my iPhone 5 in the water with a water proof case a couple days ago. After I got out I noticed the screen was discolored and the ringer didn't work, but other than that, my phone worked fine. After I used the battery up on my phone. I plugged in my phone, but as it turned on it stayed at 4% and never went up and charged. It finished when I used it and turned off. I have been putting it in rice for the past 3-4 days at 12 hour increments. Any insight or help would be greatly appreciated.

SUSPICIOUS ACTIVITY AT MY SCHOOL BUS STOP?

Everyday I've noticed a man in a black vehicle drivin past my bus stop. I thought it was normal at first, just a man going to work. Today he parked near the bus (I was watching close enough to clearly see) and he took out his green iPhone and was TAKING PHOTOS of the middle schoolers getting on the bus. I'm nervous to go there now.