I dropped my iPhone in the ocean
So maybe an hour or two ago I was wading in the ocean with my friend and we jumped over a wave and my iPhone 4 fell out I my pocket. I didn't realize it for at least 5 minutes until my friend found it in water maybe a foot deep. I picked it up and dried it off but I didn't know what to do. I heard soaking it in rice helps but we don't have any rice and were pretty far from a Grocery store. I'm using my phone to write this, its been fine so far except the lock button stopped working after maybe an hour after it being in the ocean. I can't lock my phone, turn it off, or take a screenshot. The lock button is totally dead. Is it to late to fix it somehow or am I going to have to get it fixed/replaced?