Jim, I have an iPhone, as Im carefull i’ve never worried about it to much. I had an ATT rep tell me that they will intialy give you a new phone, but if water damage is present that they will charge a fee to your bill…
Other than that I havent looked to much into it because well, I keep my phone in a condom, so unless that fucker is submerged for a long time i think itll be fine