I have an I535PP with a working board but the screen bled out.
I also have a SPH-L710 with a working screen, but the board/phone itself is messed.
I put the both of them together, and to my surprise got it to display. However many things are not working with it unfortunately.
The camera, vibration, and wifi wont work. Neither will the home button, but that could of been from the donor screen. Don't know, but I can't access any of the recovery features because of that. So I can't clear cache to see if that'll fix some hardware issues.
It's also worthy to note that this pcb isn't meant to go in with the plastic components on the frame. There are indentations missing, so I didn't put one of the screws in so it doesn't sandwitch down the pcb and possibly unplug connections like the camera.
( its the screw on the left side in the middle, that connects the top and bottom pcb )
My camera issue could also be that when I screw it all together it somehow disconnects itself? Same as the vibration.