Need some suggestions with my iPhone X repair! As I cant make any call
So, basically I used my phone to click some photos and video of me and my friend's inside of swimming pool, as it advertised with one the tag as water resistant upto 2 meters, so I tried it up and I barely even dived for 4 feet it stopped responding, so when I came back home and examined the phone it turned out that I can see water moisture onto back and front lenses, so I straight to the nearest repair shop, and they straight up said that water damage is not under warranty, so I choose instead to go for local repair shop personalize for apple products only, cause I ain't gonna pay half the original price and get a new iPhone.
He opened up the device and cleaned it with Isopropyl alcohol and device was ok until I tried to make a call but couldn't as the was wasn't connecting and got cancelled every time in the middle of the call with network getting reset and if I try two to three time my device would just restart itself, and also I when I receive a phone call I couldn't here the other person and the call would just disconnect and yeah,also face is just toasted as I also examined it by camera of brother phone the flood illuminator is not working as I can see only 1 infrared flash ( there should be two of em)from my brothers device using camera.
So I went up on google and started to search about issue,
Many of the guys who had same issue with inhone 6,7 and other device but not iPhone X
Told that removing the front camera housing with flex cable and also the front ear piece with flex cable and replacing them with new one the issue would get resolve and also a heads up the issue got resolve sometimes for a week or two on itself without any update and stuff .
Any suggestions what could be don't to fix it?