Chosen Solution

So I dropped my iPhone 7 in a lake for a month in a half and I found it in the lake, so I opened it up and put it in some rice and later found out rice doesn’t work , and it was corroded inside, and the screen looked water damaged. I plugged it in and it made a sound until I unplugged it and the screen didn’t turn on. I was wondering how to fix it.

Well, after rice you plugged it in to complete the list of things to avoid after liquid damage ? ;) If you need to ask, it means you don’t have the tools neither the knowledge to perform the probably endless number of repairs needed to fix the phone. After such a long time in a lake, unless you have very precious data to save to justify a very expensive data recovery repair by a skillful Pro, if even possible, I would suggest you forget about that phone.

watch this video to help you fix your iphone https://youtu.be/BU95TBsJxM8