Surely you can find some lcd display from China market but you can encounter lot of problems after the change. [br]
The first is that iPhone boot up with a message that screen is not genuine. [br]
The second is that you’ll lose perfect compatibility and True Tone. [br]
Then you can find more related issue caused by lower quality of screen (bad colors/contrast, lower brightness and more battery usage). [br]
I hope this can be useful :)
have a nice day