So my iphone recently died on me. I'm wondering now if its the lcd or motherboard issue. It's an Iphone 6s Plus so 3-4 years old but there wasn't any issues until yesterday. I was browsing Wattpad when all of a sudden the screen had white and black lines down the screen and I shut off the screen only to have the screen display dim and unresponsive. It suddenly turn off by itself when I tried restarting. I think it is alive somewhat through the temperature it gives off at the top section of the screen. Now I'm thinking if I need to replace it completely or just fix the screen. I have another phone but its the whatsapp that I'm after for transferring chats.