My iphone keeps showing the apple logo?

I dropped my phone in water 4 days ago. My phone played up and bit but yesterday it turned off and now just shows the apple logo.
i've tried all the things online - press in home and power button etc
any ideas suggestions or has it died?

Added (1). I've managed to get it to connect to itunes and its currently restoring. I did this eariler and it made it to the set up but only seemed to stay switched on for about a minute before turning off. Sometimes it returned to the home screen when i inserted the usb cable and connect to pc other times it went back to the apple logo again

I think it might have died on you, it sounds like you have got some water damage to a crucial part of it, likely the flash drive and that is preventing it from turning on properly as it can't access the code which tells it how to turn on. In short your phone has gone to a better place. Take it to where you bought it and see what they can do, sometimes the memory can be retrieved but I still think you will need a new phone.

There might be some moisture inside the phone! Take the back off and use an hair dryer if you've one handy. A friend of mine tried this idea and it worked for him.

One way to remove moisture from phone is to bury it in a small sack of rice grains (uncooked of course. Overnight. Rice absorbs all the moisture that you may have hard time wiping off from inside of the phone circuitry.

My iPhone 6s won't turn on completely and keeps showing the apple symbol when I try to charge it, or push the power button. I took it to the sprint store and they said I have to get new phone but I can't until my father pays the bill. Is there any possible way I can fix it without getting a new phone?

Yesterday I dropped my phone in the water when I was having a bath next day I tried to charge it and then I saw the apple logo appear on the screen and I thought my phone is not damaged but it didn't turn on the apple logo would appear constantly and my phone is still not working what should I do?!