My P30 wifi, Bluetooth, GPS are not working

Few months ago, I came back from work and its raining. My phone in my pocket is also wet and caused the camera lens to vaporized.

I have already open my phone and Clean it with Ultrasonic cleaner + 99% isopropyl alcohol.

My wifi works but in weak condition. My bluetooh and GPS also very weak.

Should i open all the metal plate on board to clean it? Or should i change the wifi, Bluetooth, gps ic. Can someone tell me which one is the related chip ic to change? Thanks.