Chosen Solution

I have a iphone 8 plus that i tried to restore back to factory settings, during the restore the screen turned black with a white box with the apple logo inside it then never power back on or showed any signs of life. I have tried to hard reset it, plug into iTunes or windows and on macOS and even a new screen but nothing. I NEED HELP

Ok, try keeping it in a ziplock with rice, it may had overheated, fell in water