Chosen Solution

so my dad put his iphone 6 in a washing machine about a month ago, and just left it because it didn’t work, he’s offered it to me now so i thought i’d fix it. i replaced the battery and charging port and even submerged the logic board in isopropyl. what else can i try?

If you want to get that phone fixed you’ll need to replace some components on the board if you are lucky to get that working. It requires micro-soldering which reputable repair stores that does micro-soldering can fix.