Mobile Phone Problem. I accidently dropped the phone (Samsung U900 Soul) in water and I managed to

Question

I accidently dropped the phone (Samsung U900 Soul) in water and I managed to dry it out and get it working. It was workingfine apart from the occasional weird button behaviour where either thebuttons didnt respond or they did respond but not how they normally do.Even though it was working fine suddenly when on a call the otherperson on the phone cannot hear me but I can hear them perfectly. Itried using the voice recorder but it does not record anything. Could you please help me with this. Thank you.