iPhone 7Plus Haptic vibrator and Rear speaker not working

I washed my iPhone 7 plus into our faucet with soap because i thought it is a water resistant and should be survive during the cleaning, But after cleaning it, i noticed that the Screen is not functioning i cant touch it but there is a display. So i force shutdown my iPhone and put it in a rice bowl for a few minutes. But when i try to turn on my iPhone it doesn’t boot up it just keep on bootlooping so i tried to put my charger.

I noticed that there is a water inside my phone a lot of water. So i immediately opened my iPhone to remove the motherboard and to let it dry. Finally my iphone booted up!

Everything works fine microphone, earpiece speaker and everything! Except the HAPTIC VIBRATOR and REAR speaker.

I tried to replace my whole charging port including rear speaker and haptic vibrator but its the same no work at all.

i tried to put my haptic vibrator and rear speaker to a working iphone 7 plus of my friend it is working without issues.

I need your help guys! Do you think that some of the IC in the motherboard had coression or shorted so the iphone is preventing to work the speaker and vibrator? Do you think i should clean the motherboard or put it into the isopropyl alcohol for a minutes?

UPDATE! i removed the motherboard and soak it to isopropyl alcogol and cleaned it. But still no sound on the rear speaker and vibration still not working.