My iPhone 4s got wet in a storm. The camera now won't work

I have tried to reset and restore. I've tried closing the app, restarting my phone. Everything else works. It's just the camera that doesn't work. After my phone got wet I put it in rice for 24 hours (although for most of the time my phone was on!)

Can someone please help me?

I bought my phone second hand on gumtree so I couldn't get it insured and I'm not apple with help as the phone is not register to my name!

Added (1). In snap chat my front camera works!

I went to the Apple store about my back panel being smashed and instead of repairing it, they said they'd replace the whole phone for £139 with no mention of AppleCare or insurance

I may be wrong but that's what I got told so I guess you could ask and see if that's a possibility?

You can get it fixed here

https://mendmyi.com/repairs/iphone-repairs/

Take it to a nearest service center and get it fixed as soon as possible before the situation gets worse. Hope you find this helpful.