HELP! Samsung Galaxy a10- it has vertical lines after splash of water

@angelolerado it does not matter how long it was exposed. What matters is where it was exposed. In your case you do want to start with a new display. It is possible that this is a shortened component on the motherboard but for now you will have to start somewhere. Best to start with the display. Once you have your phone disassembled, clean the boards etc. with high grade (90%+) isopropyl alcohol and a soft brush. Clean the connectors etc. Check the board for obviously damaged looking components. Post some good pictures of your board with your QUESTION. that way we can see what you see. Then replace the display and re-evaluate. iFixitでの質問に画像を追加する方法