make sure its dried out all the way && dont tell them that it gt ruined by gettin thrown in the pool just say that u dont know why its doin watever's wrong with it cuz 1 of my friends ruined 1 of my phones by accidently dropping it in a glass of water && i made sure its was all dried out && i took it back && they gave me a new one
Hope I helped!!
P.S. They usually dot ask how it happened soo just tell them wats wrong with it. Dont volunteer any other info as 2 how it got like that