Can I replace my black iPhone LCD screen with a white one

"Yes you can.

The only thing is that you will have to migrate your original Home Button to retain Touch ID so you will have a black button on a white screen.

There are some personalization items you can find, like this Home Button sticker.

If you do the research first, you may end up with a nice result."

"Hi

I personally did this, put a black screen on my white iPhone, but you have to put the old Touch ID home button on the new screen. It means I have a black screen with a white home button (that was on purpose, to make it unique).

In your case you will have a white screen with black home button."

The color of LCD screen assemble don't affect the display function. To keep the touch ID function, you should keep the original Home Button.

"i have replaced my iphone Se black with white LCD

but its not working properly when i open some apps with white background display get turn off"