My phone in salt water. Around November i went to the beach. I was in the water for about

Question

Around November i went to the beach. I was in the water for about 30seconds and realized my phone was in my pocket. i ran back to shore and tried to turn it on(stupid thing to do) then i put it inside my bag and left it there till i went home. when i got home i went online to see how cqan i fix it. i tried that alchohol thing and dried it but it didnt work. then i left it out for about 2 days to dry with out the battery. when i tried to turn on my phone the LCD light wasnt working. then i left it one more day. the phone was ok till it turned off. sometimes it turns on but the automatically turns off. i even tried putting it infront of a fan overnight. still doesnt work. since i cant charge it i always use someone else battery. recently my phone is eating up the energy from the battery really fast. now i put in a fully charged battery in and it doesnt want to turn on. what should i do now??