Recently my Sony Ericsson W580i got somewhat wet. I let it sit with the battery out for a little less than an hour, and it turned on and worked for about an hour, then turned off. I tried turning it on, but nothing happened. So I let the battery sit out again for 3+ hours, and still nothing. The little strip on the battery changed to a pink color. So what can I do? Would buying a new battery work, or would I have to replace the entire phone?