It appears that the LCD panel has been damaged, however the rest of the phone remains functional. The screen needs to be replaced. Follow this tutorial on how to do it. https://www.youtube.com/watch?v=-lVjTSOKr4w
Hi sir, I would recommend contacting your local car shop ex.) Lordco. And ask them what hoses would be appropriate for your specific car and they almost always can give an answer and order in the part or have it in stock. Hope this helps, Good Luck!
Try reseating the cables into the phones motherboard there mught be tiny particles preventing sufficient contact. Maybe try looking in your phones battery settings as auto brightness helps battery life. Let me know if this helps, Good Luck!