LG k20 plus screen doesn't always function properly

Hi,

As you know water and electronics and electricity are not a good mix.

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.

Rice is good to eat but does nothing to fix the problems caused by corrosion

Don't Put Your Device in Rice. Here's Why...

First do not turn on your phone and then you need to with the phone turned off, remove the battery as soon as possible from the phone to minimize further damage.''

Then you need to dis-assemble the rest of the phone and clean all the affected parts using Isopropyl Alcohol 90%+ to remove all traces of corrosion and water. Do not use "rubbing alcohol" as in some cases this is only 70% and is not as effective. If you do check the label to verify the amount of IPA.

Here is a link that describes the process.

Electronics Water Damage

As always with electronics, especially surface mounted PCBs be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board. Also clean the flex cable connectors and cable ends to remove any corrosion that may have started in the connector and is causing bad connections.

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

Here’s a link to a video that shows how to replace the screen in your phone. It is useful as it shows how to dis-assemble the phone so that it can be inspected and cleaned etc.

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