Dropped in water, works fine but problems w/ screen & rear camera

Yesterday I dropped my iPhone 6S in a toilet while I was at a restaurant (let’s not ask any questions) and I obviously did not have any rice on me, so I wrapped it in a paper towel and put it in my pocket for the couple hours I was there and left it. It kept turning on on it’s own because I picked it up, but other than that it was fine and there were no major problems other than it being wet, but I tried to dry it off with my shirt. (Also, I picked it up right when I realized that it was my phone that had dropped and it was only in there for a couple of seconds.

Fast forward to when I got home, I immediately put the phone in rice and a ziplock bag and left it overnight and through the day. It was in there for probably 22 hours.

When I took it out a couple of hours ago, I noticed that the front camera was fine, however the back camera is full of water vapour and very blurry, which I will insert a picture at the end. Just a few minutes ago, I was using my phone and I noticed in the top left hand corner there are a couple of weird boxes (I don’t know how to explain) which I know for a fact aren’t normal and they won’t go away.

I don’t know if this is important, but I have a small crack in the screen in one of the top corners of my phone. I’m thinking water may have gone in through there as it was having a bath in the public toilet. I’m not too concerned about it, I am pretty hopeful it will still work after, despite all of the issues. I plan on getting a new phone as soon as I can, worst case scenario I have to pay to get it fixed or just use my old 5S. (yuck)

Anyways, sorry for the whole essay. I tried to be as detailed as I could so that I can get the best answer possible. If you’ve read this far, thank you!! Here are the pictures:

The first image is what I think is water vapour INSIDE the back camera, the second picture is the weird boxes on my screen that just appeared.