Phone's history: 1 year ago, screen started acting up when the screen brightness decreased, phone would show green lines and static image making is unusable. I bought a new screen and replaced it with success following this site's tutorial. To close the back panel I used tesa double sided strips and therefore the waterproofing was compromised

Incident:

Phone went into the pool for 5s 1 week ago. I turned off the phone immediately (unfortunately I wasn't home and couldn't open it to disconnect the battery). Now the phone is completely unresponsive. Doesn't boot, black screen when I plug a charger in.

• Next day when I opened it water damage and corrosion was visible.

• I used IPA 99.7% and a soft toothbrush to clean the motherboard and this is how it looks now. Removed most of the corrosion from the connectors

• And here's the rest of the phone

• To my untrained eye I believe all the connectors are clean from corrosion? After I don't know if there could be damage to the connector's pins that are not visible.
• I purchased on Aliexpress a new charger board and a new battery (they're fairly inexpensive so I thought why not

This is where I am right now. I'm curious to know what would be the next step for a professional? Somebody told me to dunk the whole mother board into IPA for 3min. Unsure if it's a good idea.

Keen to hear what would be the appropriate next step in my situation.

Thanks in advance

⟐ Answer accepted December 26, 2025 at 4:48 MST

And I can't hear fully

⟐ Answer accepted June 28, 2025 at 11:00 MST