Rebooting after water damage - touch screen is not working

Hey guys.

I dropped my iPhone 6 in a pool in July, and since then i just had it on my table, and waiting for some day to fix it, and that is today.

When I power it up, the battery is working and charging at 20% right now.

It starts rebooting with Apple Logo, and goes to the mainscreen.

I Try to unlock it, by swipping the screen but it is not working, then I use the Touch-ID button, and that works, but brings me to the lockscreen.

And then it reboots again.

Does anyone know what is wrong with it :) ?