How can I fix my phone after it drop in water

Hi @christopher9538

The iPhone 11 is supposedly water resistant. It has an IP68 rating which means that it should be fully protected from dust and can handle being underwater for up to 30 minutes at a depth of 6 metres.

This is of course when it left the factory and maybe not after being used for some time.

First check if the liquid damage indicator shows whether water has entered the phone or not.

If it is red, indicating that water has entered, then the phone will have to be opened, inspected and cleaned first and then checked to see what works and what doesn't.

The impurities in the water causes corrosion and provides circuit paths for the electricity which were not in the phone's operating design and could damage the components. The corrosion starts immediately and is ongoing until it is completely cleaned away

First do not try to charge or to turn on your phone and then remove the battery as soon as possible from the phone to minimize any further damage.

Then you need to dis-assemble the rest of the phone and clean all the affected parts using Isopropyl Alcohol 99%+ (available at electronics parts stores) to remove all traces of corrosion and water. If possible do not use "rubbing alcohol" as in some cases this is only 70% IPA or less, can contain additives which may leave conductive residues and is not as effective. If you do have to use it check the label to verify the amount of IPA. The higher the percentage of IPA the better

Here are some links that may help

Electronics Water Damage, 修复iPhone 的进水故障, iPhone 11.

As always with electronics, especially surface mounted pcb be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board. Remove the shields that may be covering some components as the water may have got in under there. The ends of any flex cables and their connectors need to be cleaned as well

Hopefully after you have done all this the phone might possibly work correctly again.

If this process seems too daunting, take your phone to a reputable, professional phone repair service, experienced in liquid damage repair and ask for a quote for a repair. If you decide to do this, do it sooner than later.