I dropped my iphone 5s in toilet water?

Okay so my question is not what to do after I dropped my iphone 5s in water because I already found many asnwers to that, meanwhile myphone is in a bag of rice, but before that. When it fell in the water, it was there for like 5 seconds, and when I took it out it turned off, and I tried to turn it on again several times, even after I put it in the rice bag, my friend says I may have ruined my iphone due to trying to turn it on number of time, because IIm supposed to leave it in rice for like, 2 days. How true could that be? Is it true that I may not be able to use myphone ever again?!

8GB IPhone 5C running out of memory despite having few apps?

Basically, in the storage part of the setting it shows me having used 4.4 GB with only 852 MB of memory left. It says that the biggest user of my memory is my photos with 1.2 GB, however I have just uploaded and deleted all but 1 of my photos and this figure has not changed. I have deleted my photo library, stream, deleted pictures. Everything. I only have three apps downloaded because of this, snapchat, Instagram and kik.

Previously i had to uninstall the update which freed up 1GB of data but after taking some photos at a concert yesterday it got to the figure it is at now.

I have tried the Battery Doctor which came up i my usage section as freeing up 800MB (about three weeks ago) but i have recently deleted it as it did nothing to help me now and I just feel the figures it comes up with are false as that was the only time what it said in the app matched up with the usage figures.

I'm not sure if this would have affected i but a few months ago i did have the three month trial of apple music and once the trial ended the memory wasn't cleared up as far as i'm aware.

Could it be that the Usage figures are wrong? Or is it something else? I haven't actually been unable to download anything for lack of memory, but thats more because i have been wary of not using up my memory so i haven downloaded anything.

Sorry for the random bits of non-chronological information. If anyone could help me sort this out I would really appreciate it.

Should I upgrade to an iPhone 6 or 6s?

For Christmas I'm asking for a new phone since my broken 5c is needing an upgrade. The 6 is much cheaper than the 6s but is the 6s an overall better phone? Or are they quite similar?